10-Q Filing

MDU RESOURCES GROUP INC CIK: 67716 Q2 2018

Filing Information

Form Type	10-Q
Accession Number	`0000067716-18-000052`
Period End Date	20180630
Filing Date	20180803
Fiscal Year	2018
Fiscal Period	Q2
XBRL Instance	a2018q2form10-q_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 122 Income Statement 108 Cash Flow Statement 80 Stockholders Equity 45 Comprehensive Income 80

Balance Sheet 122 line items

Line Item	Tag	Value	Unit	Period
Common stock, shares issued	`CommonStockSharesIssued`	195.84M	shares	Point-in-time
Common stock, shares issued	`CommonStockSharesIssued`	195.84M	shares	Point-in-time
Common stock, shares issued	`CommonStockSharesIssued`	196.56M	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$40.05M	USD	Point-in-time
Treasury shares	`TreasuryStockShares`	538,921.00	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$34.60M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$41.66M	USD	Point-in-time
Treasury shares	`TreasuryStockShares`	538,921.00	shares	Point-in-time
Treasury shares	`TreasuryStockShares`	538,921.00	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$46.11M	USD	Point-in-time
Common stock, shares authorized	`CommonStockSharesAuthorized`	500.00M	shares	Point-in-time
Common stock, shares authorized	`CommonStockSharesAuthorized`	500.00M	shares	Point-in-time
Common stock, shares authorized	`CommonStockSharesAuthorized`	500.00M	shares	Point-in-time
Receivables, net	`ReceivablesNetCurrent`	$727.03M	USD	Point-in-time
Receivables, net	`ReceivablesNetCurrent`	$661.77M	USD	Point-in-time
Receivables, net	`ReceivablesNetCurrent`	$743.69M	USD	Point-in-time
Inventories	`InventoryNet`	$249.87M	USD	Point-in-time
Common stock, par value	`CommonStockParOrStatedValuePerShare`	$1.00	USD	Point-in-time
Common stock, par value	`CommonStockParOrStatedValuePerShare`	$1.00	USD	Point-in-time
Inventories	`InventoryNet`	$226.58M	USD	Point-in-time
Inventories	`InventoryNet`	$278.24M	USD	Point-in-time
Common stock, par value	`CommonStockParOrStatedValuePerShare`	$1.00	USD	Point-in-time
Prepayments and other current assets	`OtherAssetsCurrent`	$52.03M	USD	Point-in-time
Prepayments and other current assets	`OtherAssetsCurrent`	$81.30M	USD	Point-in-time
Prepayments and other current assets	`OtherAssetsCurrent`	$63.95M	USD	Point-in-time
Current assets held for sale	`AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$479.00K	USD	Point-in-time
Current assets held for sale	`AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$328.00K	USD	Point-in-time
Current assets held for sale	`AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$572.00K	USD	Point-in-time
Total current assets	`AssetsCurrent`	$1.07B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$1.12B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$1.02B	USD	Point-in-time
Investments	`LongTermInvestments`	$137.61M	USD	Point-in-time
Investments	`LongTermInvestments`	$140.05M	USD	Point-in-time
Investments	`LongTermInvestments`	$131.73M	USD	Point-in-time
Property, plant and equipment	`PropertyPlantAndEquipmentGross`	$6.59B	USD	Point-in-time
Property, plant and equipment	`PropertyPlantAndEquipmentGross`	$6.77B	USD	Point-in-time
Property, plant and equipment	`PropertyPlantAndEquipmentGross`	$6.98B	USD	Point-in-time
Less accumulated depreciation, depletion and amortization	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$2.76B	USD	Point-in-time
Less accumulated depreciation, depletion and amortization	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$2.69B	USD	Point-in-time
Less accumulated depreciation, depletion and amortization	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$2.64B	USD	Point-in-time
Net property, plant and equipment	`PropertyPlantAndEquipmentNet`	$3.95B	USD	Point-in-time
Net property, plant and equipment	`PropertyPlantAndEquipmentNet`	$4.08B	USD	Point-in-time
Net property, plant and equipment	`PropertyPlantAndEquipmentNet`	$4.22B	USD	Point-in-time
Goodwill	`Goodwill`	$631.79M	USD	Point-in-time
Goodwill	`Goodwill`	$631.79M	USD	Point-in-time
Goodwill	`Goodwill`	$631.79M	USD	Point-in-time
Goodwill	`Goodwill`	$642.37M	USD	Point-in-time
Other intangible assets, net	`IntangibleAssetsNetExcludingGoodwill`	$4.79M	USD	Point-in-time
Other intangible assets, net	`IntangibleAssetsNetExcludingGoodwill`	$3.84M	USD	Point-in-time
Other intangible assets, net	`IntangibleAssetsNetExcludingGoodwill`	$4.19M	USD	Point-in-time
Other	`OtherAssetsNoncurrent`	$407.85M	USD	Point-in-time
Other	`OtherAssetsNoncurrent`	$409.41M	USD	Point-in-time
Other	`OtherAssetsNoncurrent`	$416.76M	USD	Point-in-time
Noncurrent assets held for sale	`DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent`	$76.18M	USD	Point-in-time
Noncurrent assets held for sale	`DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent`	$4.39M	USD	Point-in-time
Noncurrent assets held for sale	`DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent`	$4.00M	USD	Point-in-time
Total deferred charges and other assets	`AssetsNoncurrent`	$1.13B	USD	Point-in-time
Total deferred charges and other assets	`AssetsNoncurrent`	$1.06B	USD	Point-in-time
Total deferred charges and other assets	`AssetsNoncurrent`	$1.05B	USD	Point-in-time
Total assets	`Assets`	$6.53B	USD	Point-in-time
Total assets	`Assets`	$6.23B	USD	Point-in-time
Total assets	`Assets`	$6.33B	USD	Point-in-time
Long-term debt due within one year	`LongTermDebtCurrent`	$109.20M	USD	Point-in-time
Long-term debt due within one year	`LongTermDebtCurrent`	$83.50M	USD	Point-in-time
Long-term debt due within one year	`LongTermDebtCurrent`	$148.50M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$312.33M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$330.93M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$279.21M	USD	Point-in-time
Taxes payable	`TaxesPayableCurrent`	$55.04M	USD	Point-in-time
Taxes payable	`TaxesPayableCurrent`	$47.80M	USD	Point-in-time
Taxes payable	`TaxesPayableCurrent`	$42.54M	USD	Point-in-time
Dividends payable	`DividendsPayableCurrent`	$38.71M	USD	Point-in-time
Dividends payable	`DividendsPayableCurrent`	$37.60M	USD	Point-in-time
Dividends payable	`DividendsPayableCurrent`	$38.57M	USD	Point-in-time
Accrued compensation	`AccruedSalariesCurrent`	$52.95M	USD	Point-in-time
Accrued compensation	`AccruedSalariesCurrent`	$72.92M	USD	Point-in-time
Accrued compensation	`AccruedSalariesCurrent`	$53.93M	USD	Point-in-time
Other accrued liabilities	`OtherLiabilitiesCurrent`	$208.70M	USD	Point-in-time
Other accrued liabilities	`OtherLiabilitiesCurrent`	$186.01M	USD	Point-in-time
Other accrued liabilities	`OtherLiabilitiesCurrent`	$181.03M	USD	Point-in-time
Current liabilities held for sale	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$11.99M	USD	Point-in-time
Current liabilities held for sale	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$4.48M	USD	Point-in-time
Current liabilities held for sale	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$11.71M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$693.80M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$800.98M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$812.86M	USD	Point-in-time
Long-term debt	`LongTermDebtNoncurrent`	$1.57B	USD	Point-in-time
Long-term debt	`LongTermDebtNoncurrent`	$1.74B	USD	Point-in-time
Long-term debt	`LongTermDebtNoncurrent`	$1.68B	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$362.90M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$347.27M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$668.24M	USD	Point-in-time
Other	`OtherLiabilitiesNoncurrent`	$1.18B	USD	Point-in-time
Other	`OtherLiabilitiesNoncurrent`	$1.18B	USD	Point-in-time
Other	`OtherLiabilitiesNoncurrent`	$887.52M	USD	Point-in-time
Total deferred credits and other liabilities	`LiabilitiesNoncurrent`	$1.54B	USD	Point-in-time
Total deferred credits and other liabilities	`LiabilitiesNoncurrent`	$1.53B	USD	Point-in-time
Total deferred credits and other liabilities	`LiabilitiesNoncurrent`	$1.56B	USD	Point-in-time
Commitments and contingencies	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and contingencies	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and contingencies	`CommitmentsAndContingencies`	-	USD	Point-in-time
Authorized - 500,000,000 shares, $1.00 par value Shares issued - 196,557,245 at June 30, 2018 and 195,843,297 at June 30, 2017 and December 31, 2017	`CommonStockValue`	$196.56M	USD	Point-in-time
Authorized - 500,000,000 shares, $1.00 par value Shares issued - 196,557,245 at June 30, 2018 and 195,843,297 at June 30, 2017 and December 31, 2017	`CommonStockValue`	$195.84M	USD	Point-in-time
Authorized - 500,000,000 shares, $1.00 par value Shares issued - 196,557,245 at June 30, 2018 and 195,843,297 at June 30, 2017 and December 31, 2017	`CommonStockValue`	$195.84M	USD	Point-in-time
Other paid-in capital	`AdditionalPaidInCapitalCommonStock`	$1.23B	USD	Point-in-time
Other paid-in capital	`AdditionalPaidInCapitalCommonStock`	$1.23B	USD	Point-in-time
Other paid-in capital	`AdditionalPaidInCapitalCommonStock`	$1.25B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$1.06B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$914.63M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$1.04B	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-44.13M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-37.33M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-35.79M	USD	Point-in-time
Treasury stock at cost - 538,921 shares	`TreasuryStockValue`	$3.63M	USD	Point-in-time
Treasury stock at cost - 538,921 shares	`TreasuryStockValue`	$3.63M	USD	Point-in-time
Treasury stock at cost - 538,921 shares	`TreasuryStockValue`	$3.63M	USD	Point-in-time
Total stockholders' equity	`StockholdersEquity`	$2.30B	USD	Point-in-time
Total stockholders' equity	`StockholdersEquity`	$2.43B	USD	Point-in-time
Total stockholders' equity	`StockholdersEquity`	$2.45B	USD	Point-in-time
Total liabilities and stockholders' equity	`LiabilitiesAndStockholdersEquity`	$6.33B	USD	Point-in-time
Total liabilities and stockholders' equity	`LiabilitiesAndStockholdersEquity`	$6.23B	USD	Point-in-time
Total liabilities and stockholders' equity	`LiabilitiesAndStockholdersEquity`	$6.53B	USD	Point-in-time

Income Statement 108 line items

Line Item	Tag	Value	Unit	Period
Operating revenues:	`Revenues`	$1.06B	USD	1 Quarter
Operating revenues:	`Revenues`	$1.07B	USD	1 Quarter
Operating revenues:	`Revenues`	$2.01B	USD	2 Qtrs
Operating revenues:	`Revenues`	$2.04B	USD	2 Qtrs
Operation and maintenance:	`OtherSellingGeneralAndAdministrativeExpense`	$821.95M	USD	1 Quarter
Operation and maintenance:	`OtherSellingGeneralAndAdministrativeExpense`	$1.42B	USD	2 Qtrs
Operation and maintenance:	`OtherSellingGeneralAndAdministrativeExpense`	$822.08M	USD	1 Quarter
Operation and maintenance:	`OtherSellingGeneralAndAdministrativeExpense`	$1.38B	USD	2 Qtrs
Purchased natural gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$238.20M	USD	2 Qtrs
Purchased natural gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$56.23M	USD	1 Quarter
Purchased natural gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$250.62M	USD	2 Qtrs
Purchased natural gas sold	`UtilitiesOperatingExpenseGasAndPetroleumPurchased`	$57.67M	USD	1 Quarter
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$106.28M	USD	2 Qtrs
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$102.98M	USD	2 Qtrs
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$51.66M	USD	1 Quarter
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$53.55M	USD	1 Quarter
Taxes, other than income	`TaxesExcludingIncomeAndExciseTaxes`	$88.39M	USD	2 Qtrs
Taxes, other than income	`TaxesExcludingIncomeAndExciseTaxes`	$40.76M	USD	1 Quarter
Taxes, other than income	`TaxesExcludingIncomeAndExciseTaxes`	$89.61M	USD	2 Qtrs
Taxes, other than income	`TaxesExcludingIncomeAndExciseTaxes`	$40.95M	USD	1 Quarter
Electric fuel and purchased power	`CostOfPurchasedPower`	$16.75M	USD	1 Quarter
Electric fuel and purchased power	`CostOfPurchasedPower`	$38.64M	USD	2 Qtrs
Electric fuel and purchased power	`CostOfPurchasedPower`	$17.98M	USD	1 Quarter
Electric fuel and purchased power	`CostOfPurchasedPower`	$40.49M	USD	2 Qtrs
Total operating expenses	`OperatingExpenses`	$990.61M	USD	1 Quarter
Total operating expenses	`OperatingExpenses`	$988.98M	USD	1 Quarter
Total operating expenses	`OperatingExpenses`	$1.86B	USD	2 Qtrs
Total operating expenses	`OperatingExpenses`	$1.90B	USD	2 Qtrs
Operating income	`OperatingIncomeLoss`	$143.37M	USD	2 Qtrs
Operating income	`OperatingIncomeLoss`	$73.99M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$144.44M	USD	2 Qtrs
Operating income	`OperatingIncomeLoss`	$78.66M	USD	1 Quarter
Other income	`OtherNonoperatingIncomeExpense`	$4.14M	USD	2 Qtrs
Other income	`OtherNonoperatingIncomeExpense`	$1.80M	USD	1 Quarter
Other income	`OtherNonoperatingIncomeExpense`	$2.18M	USD	2 Qtrs
Other income	`OtherNonoperatingIncomeExpense`	$1.60M	USD	1 Quarter
Interest expense	`InterestExpense`	$20.77M	USD	1 Quarter
Interest expense	`InterestExpense`	$20.80M	USD	1 Quarter
Interest expense	`InterestExpense`	$41.07M	USD	2 Qtrs
Interest expense	`InterestExpense`	$41.25M	USD	2 Qtrs
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$104.30M	USD	2 Qtrs
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$59.70M	USD	1 Quarter
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$54.79M	USD	1 Quarter
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$107.52M	USD	2 Qtrs
Income taxes	`IncomeTaxExpenseBenefit`	$18.27M	USD	2 Qtrs
Income taxes	`IncomeTaxExpenseBenefit`	$10.72M	USD	1 Quarter
Income taxes	`IncomeTaxExpenseBenefit`	$27.48M	USD	2 Qtrs
Income taxes	`IncomeTaxExpenseBenefit`	$15.29M	USD	1 Quarter
Income from continuing operations	`IncomeLossFromContinuingOperations`	$44.41M	USD	1 Quarter
Income from continuing operations	`IncomeLossFromContinuingOperations`	$80.04M	USD	2 Qtrs
Income from continuing operations	`IncomeLossFromContinuingOperations`	$44.08M	USD	1 Quarter
Income from continuing operations	`IncomeLossFromContinuingOperations`	$86.04M	USD	2 Qtrs
Income (loss) from discontinued operations, net of tax (Note 10)	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$-1.50M	USD	2 Qtrs
Income (loss) from discontinued operations, net of tax (Note 10)	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$203.00K	USD	2 Qtrs
Income (loss) from discontinued operations, net of tax (Note 10)	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$-273.00K	USD	1 Quarter
Income (loss) from discontinued operations, net of tax (Note 10)	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$-3.19M	USD	1 Quarter
Net income	`ProfitLoss`	$41.22M	USD	1 Quarter
Net income	`ProfitLoss`	$86.24M	USD	2 Qtrs
Net income	`ProfitLoss`	$43.80M	USD	1 Quarter
Net income	`ProfitLoss`	$78.54M	USD	2 Qtrs
Loss on redemption of preferred stocks	`PreferredStockRedemptionPremium`	$600.00K	USD	1 Quarter
Loss on redemption of preferred stocks	`PreferredStockRedemptionPremium`	$600.00K	USD	2 Qtrs
Loss on redemption of preferred stocks	`PreferredStockRedemptionPremium`	-	USD	1 Quarter
Loss on redemption of preferred stocks	`PreferredStockRedemptionPremium`	-	USD	2 Qtrs
Dividends declared on preferred stocks	`PreferredStockDividendsIncomeStatementImpact`	-	USD	1 Quarter
Dividends declared on preferred stocks	`PreferredStockDividendsIncomeStatementImpact`	-	USD	2 Qtrs
Dividends declared on preferred stocks	`PreferredStockDividendsIncomeStatementImpact`	-	USD	1 Quarter
Dividends declared on preferred stocks	`PreferredStockDividendsIncomeStatementImpact`	$171.00K	USD	2 Qtrs
Earnings on common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$43.80M	USD	1 Quarter
Earnings on common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$77.77M	USD	2 Qtrs
Earnings on common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$40.62M	USD	1 Quarter
Earnings on common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$86.24M	USD	2 Qtrs
Earnings before discontinued operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.41	USD	2 Qtrs
Earnings before discontinued operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.44	USD	2 Qtrs
Earnings before discontinued operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.22	USD	1 Quarter
Earnings before discontinued operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.22	USD	1 Quarter
Discontinued operations, net of tax	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare`	-	USD	2 Qtrs
Discontinued operations, net of tax	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare`	-	USD	1 Quarter
Discontinued operations, net of tax	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare`	$-0.01	USD	1 Quarter
Discontinued operations, net of tax	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare`	$-0.01	USD	2 Qtrs
Earnings per common share - basic	`EarningsPerShareBasic`	$0.40	USD	2 Qtrs
Earnings per common share - basic	`EarningsPerShareBasic`	$0.44	USD	2 Qtrs
Earnings per common share - basic	`EarningsPerShareBasic`	$0.21	USD	1 Quarter
Earnings per common share - basic	`EarningsPerShareBasic`	$0.22	USD	1 Quarter
Earnings before discontinued operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.40	USD	2 Qtrs
Earnings before discontinued operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.22	USD	1 Quarter
Earnings before discontinued operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.44	USD	2 Qtrs
Earnings before discontinued operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.22	USD	1 Quarter
Discontinued operations, net of tax	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare`	-	USD	1 Quarter
Discontinued operations, net of tax	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare`	-	USD	2 Qtrs
Discontinued operations, net of tax	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare`	$-0.01	USD	1 Quarter
Discontinued operations, net of tax	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare`	-	USD	2 Qtrs
Earnings per common share - diluted	`EarningsPerShareDiluted`	$0.21	USD	1 Quarter
Earnings per common share - diluted	`EarningsPerShareDiluted`	$0.44	USD	2 Qtrs
Earnings per common share - diluted	`EarningsPerShareDiluted`	$0.40	USD	2 Qtrs
Earnings per common share - diluted	`EarningsPerShareDiluted`	$0.22	USD	1 Quarter
Dividends declared per common share	`CommonStockDividendsPerShareDeclared`	$0.39	USD	2 Qtrs
Dividends declared per common share	`CommonStockDividendsPerShareDeclared`	$0.19	USD	1 Quarter
Dividends declared per common share	`CommonStockDividendsPerShareDeclared`	$0.40	USD	2 Qtrs
Dividends declared per common share	`CommonStockDividendsPerShareDeclared`	$0.20	USD	1 Quarter
Weighted average common shares outstanding - basic	`WeightedAverageNumberOfSharesOutstandingBasic`	195.30M	shares	1 Quarter
Weighted average common shares outstanding - basic	`WeightedAverageNumberOfSharesOutstandingBasic`	195.41M	shares	2 Qtrs
Weighted average common shares outstanding - basic	`WeightedAverageNumberOfSharesOutstandingBasic`	195.30M	shares	2 Qtrs
Weighted average common shares outstanding - basic	`WeightedAverageNumberOfSharesOutstandingBasic`	195.52M	shares	1 Quarter
Weighted average common shares outstanding - diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	196.17M	shares	1 Quarter
Weighted average common shares outstanding - diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	195.99M	shares	2 Qtrs
Weighted average common shares outstanding - diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	195.97M	shares	1 Quarter
Weighted average common shares outstanding - diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	196.08M	shares	2 Qtrs

Cash Flow Statement 80 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$41.22M	USD	1 Quarter
Net income	`ProfitLoss`	$86.24M	USD	2 Qtrs
Net income	`ProfitLoss`	$43.80M	USD	1 Quarter
Net income	`ProfitLoss`	$78.54M	USD	2 Qtrs
Income (loss) from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$-3.19M	USD	1 Quarter
Income (loss) from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$-273.00K	USD	1 Quarter
Income (loss) from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$203.00K	USD	2 Qtrs
Income (loss) from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$-1.50M	USD	2 Qtrs
Income from continuing operations	`IncomeLossFromContinuingOperations`	$86.04M	USD	2 Qtrs
Income from continuing operations	`IncomeLossFromContinuingOperations`	$44.41M	USD	1 Quarter
Income from continuing operations	`IncomeLossFromContinuingOperations`	$44.08M	USD	1 Quarter
Income from continuing operations	`IncomeLossFromContinuingOperations`	$80.04M	USD	2 Qtrs
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$51.66M	USD	1 Quarter
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$53.55M	USD	1 Quarter
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$102.98M	USD	2 Qtrs
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$106.28M	USD	2 Qtrs
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-5.29M	USD	2 Qtrs
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$4.19M	USD	2 Qtrs
Receivables	`IncreaseDecreaseInReceivables`	$13.85M	USD	2 Qtrs
Receivables	`IncreaseDecreaseInReceivables`	$43.48M	USD	2 Qtrs
Inventories	`IncreaseDecreaseInInventories`	$47.40M	USD	2 Qtrs
Inventories	`IncreaseDecreaseInInventories`	$13.57M	USD	2 Qtrs
Other current assets	`IncreaseDecreaseInOtherCurrentAssets`	$-29.07M	USD	2 Qtrs
Other current assets	`IncreaseDecreaseInOtherCurrentAssets`	$15.80M	USD	2 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$15.75M	USD	2 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$11.61M	USD	2 Qtrs
Other current liabilities	`IncreaseDecreaseInOtherCurrentLiabilities`	$-6.39M	USD	2 Qtrs
Other current liabilities	`IncreaseDecreaseInOtherCurrentLiabilities`	$7.85M	USD	2 Qtrs
Other noncurrent changes	`IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet`	$4.46M	USD	2 Qtrs
Other noncurrent changes	`IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet`	$11.57M	USD	2 Qtrs
Net cash provided by continuing operations	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$176.36M	USD	2 Qtrs
Net cash provided by continuing operations	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$105.65M	USD	2 Qtrs
Net cash provided by discontinued operations	`CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations`	$33.85M	USD	2 Qtrs
Net cash provided by discontinued operations	`CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations`	$224.00K	USD	2 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$139.49M	USD	2 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$176.58M	USD	2 Qtrs
Capital expenditures	`PaymentsToAcquireProductiveAssets`	$143.76M	USD	2 Qtrs
Capital expenditures	`PaymentsToAcquireProductiveAssets`	$210.61M	USD	2 Qtrs
Acquisitions, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$20.01M	USD	2 Qtrs
Acquisitions, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	-	USD	2 Qtrs
Net proceeds from sale or disposition of property and other	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$9.29M	USD	2 Qtrs
Net proceeds from sale or disposition of property and other	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$119.36M	USD	2 Qtrs
Investments	`PaymentsForProceedsFromInvestments`	$916.00K	USD	2 Qtrs
Investments	`PaymentsForProceedsFromInvestments`	$358.00K	USD	2 Qtrs
Net cash used in continuing operations	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$-24.76M	USD	2 Qtrs
Net cash used in continuing operations	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$-222.25M	USD	2 Qtrs
Net cash provided by discontinued operations	`CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations`	-	USD	2 Qtrs
Net cash provided by discontinued operations	`CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations`	$2.23M	USD	2 Qtrs
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-222.25M	USD	2 Qtrs
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-22.53M	USD	2 Qtrs
Issuance of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$240.75M	USD	2 Qtrs
Issuance of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$63.83M	USD	2 Qtrs
Repayment of long-term debt	`RepaymentsOfLongTermDebt`	$103.52M	USD	2 Qtrs
Repayment of long-term debt	`RepaymentsOfLongTermDebt`	$93.28M	USD	2 Qtrs
Dividends paid	`PaymentsOfDividends`	$77.14M	USD	2 Qtrs
Dividends paid	`PaymentsOfDividends`	$75.53M	USD	2 Qtrs
Redemption of preferred stock	`PaymentsForRepurchaseOfPreferredStockAndPreferenceStock`	$15.60M	USD	2 Qtrs
Redemption of preferred stock	`PaymentsForRepurchaseOfPreferredStockAndPreferenceStock`	-	USD	2 Qtrs
Repurchase of common stock	`PaymentsForRepurchaseOfCommonStock`	$5.02M	USD	2 Qtrs
Repurchase of common stock	`PaymentsForRepurchaseOfCommonStock`	$1.68M	USD	2 Qtrs
Tax withholding on stock-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$757.00K	USD	2 Qtrs
Tax withholding on stock-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$2.33M	USD	2 Qtrs
Net cash provided by (used in) continuing operations	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$-123.02M	USD	2 Qtrs
Net cash provided by (used in) continuing operations	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$52.73M	USD	2 Qtrs
Net cash provided by discontinued operations	`CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations`	-	USD	2 Qtrs
Net cash provided by discontinued operations	`CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations`	-	USD	2 Qtrs
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$52.73M	USD	2 Qtrs
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-123.02M	USD	2 Qtrs
Effect of exchange rate changes on cash and cash equivalents	`EffectOfExchangeRateOnCashAndCashEquivalents`	$-1.00K	USD	2 Qtrs
Effect of exchange rate changes on cash and cash equivalents	`EffectOfExchangeRateOnCashAndCashEquivalents`	$-1.00K	USD	2 Qtrs
Increase (decrease) in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$7.06M	USD	2 Qtrs
Increase (decrease) in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$-6.06M	USD	2 Qtrs
Cash and cash equivalents -- beginning of year	`CashAndCashEquivalentsAtCarryingValue`	$41.66M	USD	Point-in-time
Cash and cash equivalents -- beginning of year	`CashAndCashEquivalentsAtCarryingValue`	$46.11M	USD	Point-in-time
Cash and cash equivalents -- beginning of year	`CashAndCashEquivalentsAtCarryingValue`	$40.05M	USD	Point-in-time
Cash and cash equivalents -- beginning of year	`CashAndCashEquivalentsAtCarryingValue`	$34.60M	USD	Point-in-time
Cash and cash equivalents -- end of period	`CashAndCashEquivalentsAtCarryingValue`	$34.60M	USD	Point-in-time
Cash and cash equivalents -- end of period	`CashAndCashEquivalentsAtCarryingValue`	$41.66M	USD	Point-in-time
Cash and cash equivalents -- end of period	`CashAndCashEquivalentsAtCarryingValue`	$40.05M	USD	Point-in-time
Cash and cash equivalents -- end of period	`CashAndCashEquivalentsAtCarryingValue`	$46.11M	USD	Point-in-time

Stockholders Equity 45 line items

Line Item	Tag	Value	Unit	Period
Balance (in shares)	`CommonStockSharesIssued`	195.84M	shares	Point-in-time
Balance (in shares)	`CommonStockSharesIssued`	195.84M	shares	Point-in-time
Balance (in shares)	`CommonStockSharesIssued`	196.56M	shares	Point-in-time
Treasury stock (in shares)	`TreasuryStockShares`	538,921.00	shares	Point-in-time
Treasury stock (in shares)	`TreasuryStockShares`	538,921.00	shares	Point-in-time
Treasury stock (in shares)	`TreasuryStockShares`	538,921.00	shares	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.45B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.32B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.30B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.43B	USD	Point-in-time
Adjusted balance at January 1, 2018	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1`	$2.43B	USD	Point-in-time
Net income	`ProfitLoss`	$78.54M	USD	2 Qtrs
Net income	`ProfitLoss`	$43.80M	USD	1 Quarter
Net income	`ProfitLoss`	$41.22M	USD	1 Quarter
Net income	`ProfitLoss`	$86.24M	USD	2 Qtrs
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$-56.00K	USD	2 Qtrs
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$396.00K	USD	1 Quarter
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$1.16M	USD	2 Qtrs
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$725.00K	USD	1 Quarter
Dividends declared on preferred stocks	`DividendsPreferredStockCash`	$171.00K	USD	2 Qtrs
Dividends declared on common stock	`DividendsCommonStockCash`	$75.19M	USD	2 Qtrs
Dividends declared on common stock	`DividendsCommonStockCash`	$77.29M	USD	2 Qtrs
Stock-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions`	$1.63M	USD	2 Qtrs
Stock-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions`	$2.25M	USD	2 Qtrs
Repurchase of common stock	`TreasuryStockValueAcquiredCostMethod`	$5.02M	USD	2 Qtrs
Repurchase of common stock	`TreasuryStockValueAcquiredCostMethod`	$1.68M	USD	2 Qtrs
Issuance of common stock upon vesting of stock-based compensation, net of shares used for tax withholdings	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$757.00K	USD	2 Qtrs
Issuance of common stock upon vesting of stock-based compensation, net of shares used for tax withholdings	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$2.33M	USD	2 Qtrs
Issuance of common stock	`StockIssuedDuringPeriodValueNewIssues`	$17.99M	USD	2 Qtrs
Redemption of preferred stock	`PreferredStockRedemptionPremium`	$600.00K	USD	1 Quarter
Redemption of preferred stock	`PreferredStockRedemptionPremium`	$600.00K	USD	2 Qtrs
Redemption of preferred stock	`PreferredStockRedemptionPremium`	-	USD	1 Quarter
Redemption of preferred stock	`PreferredStockRedemptionPremium`	-	USD	2 Qtrs
Redemption of preferred stock	`PaymentsForRepurchaseOfPreferredStockAndPreferenceStock`	-	USD	2 Qtrs
Redemption of preferred stock	`PaymentsForRepurchaseOfPreferredStockAndPreferenceStock`	$15.60M	USD	2 Qtrs
Balance (in shares)	`CommonStockSharesIssued`	195.84M	shares	Point-in-time
Balance (in shares)	`CommonStockSharesIssued`	195.84M	shares	Point-in-time
Balance (in shares)	`CommonStockSharesIssued`	196.56M	shares	Point-in-time
Treasury stock (in shares)	`TreasuryStockShares`	538,921.00	shares	Point-in-time
Treasury stock (in shares)	`TreasuryStockShares`	538,921.00	shares	Point-in-time
Treasury stock (in shares)	`TreasuryStockShares`	538,921.00	shares	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.30B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.45B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.32B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.43B	USD	Point-in-time

Comprehensive Income 80 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$41.22M	USD	1 Quarter
Net income	`ProfitLoss`	$86.24M	USD	2 Qtrs
Net income	`ProfitLoss`	$43.80M	USD	1 Quarter
Net income	`ProfitLoss`	$78.54M	USD	2 Qtrs
Reclassification adjustment for loss on derivative instruments included in net income, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax`	$-56.00K	USD	1 Quarter
Reclassification adjustment for loss on derivative instruments included in net income, net of tax of $53 and $56 for the three months ended and $109 and $112 for the six months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-183.00K	USD	2 Qtrs
Reclassification adjustment for loss on derivative instruments included in net income, net of tax of $53 and $56 for the three months ended and $109 and $112 for the six months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-95.00K	USD	1 Quarter
Reclassification adjustment for loss on derivative instruments included in net income, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax`	$-112.00K	USD	2 Qtrs
Reclassification adjustment for loss on derivative instruments included in net income, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax`	$-109.00K	USD	2 Qtrs
Reclassification adjustment for loss on derivative instruments included in net income, net of tax of $53 and $56 for the three months ended and $109 and $112 for the six months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-187.00K	USD	2 Qtrs
Reclassification adjustment for loss on derivative instruments included in net income, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax`	$-53.00K	USD	1 Quarter
Reclassification adjustment for loss on derivative instruments included in net income, net of tax of $53 and $56 for the three months ended and $109 and $112 for the six months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-92.00K	USD	1 Quarter
Amortization of postretirement liability losses included in net periodic benefit cost (credit), tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax`	$406.00K	USD	2 Qtrs
Amortization of postretirement liability losses included in net periodic benefit cost (credit), tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax`	$190.00K	USD	1 Quarter
Amortization of postretirement liability losses included in net periodic benefit cost (credit), tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax`	$145.00K	USD	1 Quarter
Amortization of postretirement liability losses included in net periodic benefit cost (credit), tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax`	$300.00K	USD	2 Qtrs
Reclassification of postretirement liability adjustment from regulatory asset, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentfromAOCIPostretirementLiabilityAdjustmentToRegulatoryAssetTax`	$-725.00K	USD	2 Qtrs
Amortization of postretirement liability losses included in net periodic benefit cost (credit), net of tax of $145 and $190 for the three months ended and $300 and $406 for the six months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax`	$669.00K	USD	2 Qtrs
Reclassification of postretirement liability adjustment from regulatory asset, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentfromAOCIPostretirementLiabilityAdjustmentToRegulatoryAssetTax`	-	USD	1 Quarter
Amortization of postretirement liability losses included in net periodic benefit cost (credit), net of tax of $145 and $190 for the three months ended and $300 and $406 for the six months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax`	$867.00K	USD	2 Qtrs
Amortization of postretirement liability losses included in net periodic benefit cost (credit), net of tax of $145 and $190 for the three months ended and $300 and $406 for the six months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax`	$312.00K	USD	1 Quarter
Amortization of postretirement liability losses included in net periodic benefit cost (credit), net of tax of $145 and $190 for the three months ended and $300 and $406 for the six months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax`	$449.00K	USD	1 Quarter
Reclassification of postretirement liability adjustment from regulatory asset, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentfromAOCIPostretirementLiabilityAdjustmentToRegulatoryAssetTax`	-	USD	1 Quarter
Reclassification of postretirement liability adjustment from regulatory asset, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentfromAOCIPostretirementLiabilityAdjustmentToRegulatoryAssetTax`	-	USD	2 Qtrs
Reclassification of postretirement liability adjustment from regulatory asset, net of tax of $0 and $0 for the three months ended and $0 and $(725) for the six months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentfromAOCIPostretirementLiabilityAdjustmentToRegulatoryAssetNetofTax`	-	USD	2 Qtrs
Foreign currency translation adjustments recognized during the period, tax	`OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax`	$-14.00K	USD	2 Qtrs
Reclassification of postretirement liability adjustment from regulatory asset, net of tax of $0 and $0 for the three months ended and $0 and $(725) for the six months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentfromAOCIPostretirementLiabilityAdjustmentToRegulatoryAssetNetofTax`	-	USD	1 Quarter
Foreign currency translation adjustments recognized during the period, tax	`OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax`	$-9.00K	USD	1 Quarter
Reclassification of postretirement liability adjustment from regulatory asset, net of tax of $0 and $0 for the three months ended and $0 and $(725) for the six months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentfromAOCIPostretirementLiabilityAdjustmentToRegulatoryAssetNetofTax`	-	USD	1 Quarter
Reclassification of postretirement liability adjustment from regulatory asset, net of tax of $0 and $0 for the three months ended and $0 and $(725) for the six months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentfromAOCIPostretirementLiabilityAdjustmentToRegulatoryAssetNetofTax`	$-917.00K	USD	2 Qtrs
Foreign currency translation adjustments recognized during the period, tax	`OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax`	$-13.00K	USD	1 Quarter
Foreign currency translation adjustments recognized during the period, tax	`OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax`	$-3.00K	USD	2 Qtrs
Postretirement liability adjustment	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-312.00K	USD	1 Quarter
Reclassification of foreign currency translation adjustment	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationTax`	-	USD	1 Quarter
Reclassification of foreign currency translation adjustment	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationTax`	$-75.00K	USD	1 Quarter
Postretirement liability adjustment	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-449.00K	USD	1 Quarter
Reclassification of foreign currency translation adjustment	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationTax`	-	USD	2 Qtrs
Postretirement liability adjustment	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-867.00K	USD	2 Qtrs
Postretirement liability adjustment	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$248.00K	USD	2 Qtrs
Reclassification of foreign currency translation adjustment	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationTax`	$-75.00K	USD	2 Qtrs
Net unrealized gain (loss) on available-for-sale investments arising during the period, tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax`	$-28.00K	USD	2 Qtrs
Net unrealized gain (loss) on available-for-sale investments arising during the period, tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax`	$-12.00K	USD	1 Quarter
Net unrealized gain (loss) on available-for-sale investments arising during the period, tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax`	$-39.00K	USD	2 Qtrs
Net unrealized gain (loss) on available-for-sale investments arising during the period, tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax`	$-13.00K	USD	1 Quarter
Foreign currency translation adjustment recognized during the period, net of tax of $(13) and $(9) for the three months ended and $(14) and $(3) for the six months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax`	$-59.00K	USD	1 Quarter
Reclassification adjustment for loss on available-for-sale investments included in net income, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax`	$-10.00K	USD	1 Quarter
Foreign currency translation adjustment recognized during the period, net of tax of $(13) and $(9) for the three months ended and $(14) and $(3) for the six months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax`	$-6.00K	USD	2 Qtrs
Reclassification adjustment for loss on available-for-sale investments included in net income, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax`	$-17.00K	USD	2 Qtrs
Reclassification adjustment for loss on available-for-sale investments included in net income, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax`	$-36.00K	USD	2 Qtrs
Foreign currency translation adjustment recognized during the period, net of tax of $(13) and $(9) for the three months ended and $(14) and $(3) for the six months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax`	$-15.00K	USD	1 Quarter
Foreign currency translation adjustment recognized during the period, net of tax of $(13) and $(9) for the three months ended and $(14) and $(3) for the six months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax`	$-61.00K	USD	2 Qtrs
Reclassification adjustment for loss on available-for-sale investments included in net income, tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax`	$-17.00K	USD	1 Quarter
Reclassification adjustment for foreign currency translation adjustment included in net income, net of tax of $75 and $0 for the three months ended and $75 and $0 for the six months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax`	$-249.00K	USD	2 Qtrs
Reclassification adjustment for foreign currency translation adjustment included in net income, net of tax of $75 and $0 for the three months ended and $75 and $0 for the six months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax`	-	USD	2 Qtrs
Reclassification adjustment for foreign currency translation adjustment included in net income, net of tax of $75 and $0 for the three months ended and $75 and $0 for the six months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax`	-	USD	1 Quarter
Reclassification adjustment for foreign currency translation adjustment included in net income, net of tax of $75 and $0 for the three months ended and $75 and $0 for the six months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax`	$-249.00K	USD	1 Quarter
Foreign currency translation adjustment	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-15.00K	USD	1 Quarter
Foreign currency translation adjustment	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$190.00K	USD	1 Quarter
Foreign currency translation adjustment	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-6.00K	USD	2 Qtrs
Foreign currency translation adjustment	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$188.00K	USD	2 Qtrs
Net unrealized loss on available-for-sale investments arising during the period, net of tax of $(12) and $(13) for the three months ended and $(39) and $(28) for the six months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-148.00K	USD	2 Qtrs
Net unrealized loss on available-for-sale investments arising during the period, net of tax of $(12) and $(13) for the three months ended and $(39) and $(28) for the six months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-51.00K	USD	2 Qtrs
Net unrealized loss on available-for-sale investments arising during the period, net of tax of $(12) and $(13) for the three months ended and $(39) and $(28) for the six months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-43.00K	USD	1 Quarter
Net unrealized loss on available-for-sale investments arising during the period, net of tax of $(12) and $(13) for the three months ended and $(39) and $(28) for the six months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-24.00K	USD	1 Quarter
Reclassification adjustment for loss on available-for-sale investments included in net income, net of tax of $10 and $17 for the three months ended and $17 and $36 for the six months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax`	$-64.00K	USD	2 Qtrs
Reclassification adjustment for loss on available-for-sale investments included in net income, net of tax of $10 and $17 for the three months ended and $17 and $36 for the six months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax`	$-31.00K	USD	1 Quarter
Reclassification adjustment for loss on available-for-sale investments included in net income, net of tax of $10 and $17 for the three months ended and $17 and $36 for the six months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax`	$-66.00K	USD	2 Qtrs
Reclassification adjustment for loss on available-for-sale investments included in net income, net of tax of $10 and $17 for the three months ended and $17 and $36 for the six months ended in 2018 and 2017, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax`	$-34.00K	USD	1 Quarter
Net unrealized gain (loss) on available-for-sale investments	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-9.00K	USD	1 Quarter
Net unrealized gain (loss) on available-for-sale investments	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$15.00K	USD	2 Qtrs
Net unrealized gain (loss) on available-for-sale investments	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$7.00K	USD	1 Quarter
Net unrealized gain (loss) on available-for-sale investments	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-84.00K	USD	2 Qtrs
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$725.00K	USD	1 Quarter
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-56.00K	USD	2 Qtrs
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$396.00K	USD	1 Quarter
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$1.16M	USD	2 Qtrs
Comprehensive income attributable to common stockholders	`ComprehensiveIncomeNetOfTax`	$44.53M	USD	1 Quarter
Comprehensive income attributable to common stockholders	`ComprehensiveIncomeNetOfTax`	$87.40M	USD	2 Qtrs
Comprehensive income attributable to common stockholders	`ComprehensiveIncomeNetOfTax`	$41.61M	USD	1 Quarter
Comprehensive income attributable to common stockholders	`ComprehensiveIncomeNetOfTax`	$78.48M	USD	2 Qtrs

Data is extracted from SEC EDGAR XBRL filings. Values shown are as reported in the filing.