10-K Filing

Intrepid Potash, Inc. CIK: 1421461 FY 2011

Filing Information

Form Type	10-K
Accession Number	`0001421461-12-000008`
Period End Date	20111231
Filing Date	20120216
Fiscal Year	2011
Fiscal Period	FY
XBRL Instance	ipi-20111231.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 78 Income Statement 110 Cash Flow Statement 112 Stockholders Equity 36 Comprehensive Income 3

Balance Sheet 78 line items

Line Item	Tag	Value	Unit	Period
Property, plant, and equipment, accumulated depreciation (in dollars)	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$66.61M	USD	Point-in-time
Property, plant, and equipment, accumulated depreciation (in dollars)	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$98.65M	USD	Point-in-time
Mineral properties and development costs, accumulated depletion (in dollars)	`MineralPropertiesAccumulatedDepletion`	$9.77M	USD	Point-in-time
Mineral properties and development costs, accumulated depletion (in dollars)	`MineralPropertiesAccumulatedDepletion`	$8.43M	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.00	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.00	USD	Point-in-time
Common stock, shares authorized	`CommonStockSharesAuthorized`	100.00M	shares	Point-in-time
Common stock, shares authorized	`CommonStockSharesAuthorized`	100.00M	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$89.79M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$76.13M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$73.37M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$116.57M	USD	Point-in-time
Short-term investments	`ShortTermInvestments`	$45.56M	USD	Point-in-time
Short-term investments	`ShortTermInvestments`	$97.24M	USD	Point-in-time
Common stock, shares outstanding	`CommonStockSharesOutstanding`	75.11M	shares	Point-in-time
Common stock, shares outstanding	`CommonStockSharesOutstanding`	75.21M	shares	Point-in-time
Trade, net	`AccountsReceivableNetCurrent`	$29.30M	USD	Point-in-time
Trade, net	`AccountsReceivableNetCurrent`	$23.77M	USD	Point-in-time
Other receivables	`NontradeReceivablesCurrent`	$6.90M	USD	Point-in-time
Other receivables	`NontradeReceivablesCurrent`	$1.16M	USD	Point-in-time
Refundable income taxes	`IncomeTaxesReceivable`	$4.49M	USD	Point-in-time
Refundable income taxes	`IncomeTaxesReceivable`	$6.54M	USD	Point-in-time
Inventory, net	`InventoryNet`	$48.09M	USD	Point-in-time
Inventory, net	`InventoryNet`	$55.39M	USD	Point-in-time
Prepaid expenses and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$5.01M	USD	Point-in-time
Prepaid expenses and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$4.02M	USD	Point-in-time
Current deferred tax asset	`DeferredTaxAssetsNetCurrent`	$3.55M	USD	Point-in-time
Current deferred tax asset	`DeferredTaxAssetsNetCurrent`	$4.93M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$276.64M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$208.82M	USD	Point-in-time
Property, plant, and equipment, net of accumulated depreciation of $98,654 and $66,615, respectively	`PropertyPlantAndEquipmentNet`	$285.92M	USD	Point-in-time
Property, plant, and equipment, net of accumulated depreciation of $98,654 and $66,615, respectively	`PropertyPlantAndEquipmentNet`	$387.42M	USD	Point-in-time
Mineral properties and development costs, net of accumulated depletion of $9,773 and $8,431, respectively	`MineralPropertiesAndDevelopmentCostsNet`	$34.37M	USD	Point-in-time
Mineral properties and development costs, net of accumulated depletion of $9,773 and $8,431, respectively	`MineralPropertiesAndDevelopmentCostsNet`	$33.48M	USD	Point-in-time
Long-term parts inventory, net	`LongTermPartsInventoryNoncurrent`	$7.12M	USD	Point-in-time
Long-term parts inventory, net	`LongTermPartsInventoryNoncurrent`	$9.56M	USD	Point-in-time
Long-term investments	`LongTermInvestments`	$6.18M	USD	Point-in-time
Long-term investments	`LongTermInvestments`	$21.30M	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$5.31M	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$3.95M	USD	Point-in-time
Non-current deferred tax asset	`DeferredTaxAssetsNetNoncurrent`	$215.63M	USD	Point-in-time
Non-current deferred tax asset	`DeferredTaxAssetsNetNoncurrent`	$266.04M	USD	Point-in-time
Total Assets	`Assets`	$828.88M	USD	Point-in-time
Total Assets	`Assets`	$932.87M	USD	Point-in-time
Trade	`AccountsPayableTradeCurrent`	$17.95M	USD	Point-in-time
Trade	`AccountsPayableTradeCurrent`	$20.90M	USD	Point-in-time
Related parties	`AccountsPayableRelatedPartiesCurrent`	$134.00K	USD	Point-in-time
Related parties	`AccountsPayableRelatedPartiesCurrent`	$126.00K	USD	Point-in-time
Accrued liabilities	`AccruedLiabilitiesCurrent`	$14.79M	USD	Point-in-time
Accrued liabilities	`AccruedLiabilitiesCurrent`	$17.15M	USD	Point-in-time
Accrued employee compensation and benefits	`EmployeeRelatedLiabilitiesCurrent`	$8.60M	USD	Point-in-time
Accrued employee compensation and benefits	`EmployeeRelatedLiabilitiesCurrent`	$12.37M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$1.48M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$1.58M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$49.67M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$45.41M	USD	Point-in-time
Asset retirement obligation	`AssetRetirementObligationsNoncurrent`	$9.48M	USD	Point-in-time
Asset retirement obligation	`AssetRetirementObligationsNoncurrent`	$9.71M	USD	Point-in-time
Deferred insurance proceeds	`DeferredInsuranceProceedsNoncurrent`	-	USD	Point-in-time
Deferred insurance proceeds	`DeferredInsuranceProceedsNoncurrent`	$11.70M	USD	Point-in-time
Other non-current liabilities	`OtherLiabilitiesNoncurrent`	$2.35M	USD	Point-in-time
Other non-current liabilities	`OtherLiabilitiesNoncurrent`	$4.46M	USD	Point-in-time
Total Liabilities	`Liabilities`	$71.04M	USD	Point-in-time
Total Liabilities	`Liabilities`	$61.74M	USD	Point-in-time
Common stock, $0.001 par value; 100,000,000 shares authorized; and 75,207,553 and 75,110,875 shares outstanding at December 31, 2011 and 2010, respectively	`CommonStockValue`	$75.00K	USD	Point-in-time
Common stock, $0.001 par value; 100,000,000 shares authorized; and 75,207,553 and 75,110,875 shares outstanding at December 31, 2011 and 2010, respectively	`CommonStockValue`	$75.00K	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$564.28M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$559.67M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-702.00K	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-1.43M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$198.79M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$308.20M	USD	Point-in-time
Total Stockholders' Equity	`StockholdersEquity`	$651.60M	USD	Point-in-time
Total Stockholders' Equity	`StockholdersEquity`	$871.13M	USD	Point-in-time
Total Stockholders' Equity	`StockholdersEquity`	$709.22M	USD	Point-in-time
Total Stockholders' Equity	`StockholdersEquity`	$757.84M	USD	Point-in-time
Total Liabilities and Stockholders' Equity	`LiabilitiesAndStockholdersEquity`	$828.88M	USD	Point-in-time
Total Liabilities and Stockholders' Equity	`LiabilitiesAndStockholdersEquity`	$932.87M	USD	Point-in-time

Income Statement 110 line items

Line Item	Tag	Value	Unit	Period
Sales	`RevenueMineralSales`	$442.95M	USD	Annual
Sales	`RevenueMineralSales`	$119.37M	USD	1 Quarter
Sales	`RevenueMineralSales`	$96.16M	USD	1 Quarter
Sales	`RevenueMineralSales`	$104.60M	USD	1 Quarter
Sales	`RevenueMineralSales`	$114.00M	USD	1 Quarter
Sales	`RevenueMineralSales`	$64.32M	USD	1 Quarter
Sales	`RevenueMineralSales`	$91.47M	USD	1 Quarter
Sales	`RevenueMineralSales`	$301.80M	USD	Annual
Sales	`RevenueMineralSales`	$359.30M	USD	Annual
Sales	`RevenueMineralSales`	$104.98M	USD	1 Quarter
Sales	`RevenueMineralSales`	$107.36M	USD	1 Quarter
Freight costs	`FreightCosts`	$28.34M	USD	Annual
Freight costs	`FreightCosts`	$29.75M	USD	Annual
Freight costs	`FreightCosts`	$21.47M	USD	Annual
Warehousing and handling costs	`WarehousingAndHandlingCosts`	$8.43M	USD	Annual
Warehousing and handling costs	`WarehousingAndHandlingCosts`	$14.03M	USD	Annual
Warehousing and handling costs	`WarehousingAndHandlingCosts`	$10.68M	USD	Annual
Cost of goods sold	`MineralExtractionProcessingAndMarketingCosts`	$211.66M	USD	Annual
Cost of goods sold	`MineralExtractionProcessingAndMarketingCosts`	$127.82M	USD	Annual
Cost of goods sold	`MineralExtractionProcessingAndMarketingCosts`	$213.67M	USD	Annual
Costs associated with abnormal production	`AbnormalProductionCosts`	-	USD	1 Quarter
Costs associated with abnormal production	`AbnormalProductionCosts`	$21.52M	USD	Annual
Costs associated with abnormal production	`AbnormalProductionCosts`	-	USD	1 Quarter
Costs associated with abnormal production	`AbnormalProductionCosts`	-	USD	1 Quarter
Costs associated with abnormal production	`AbnormalProductionCosts`	$470.00K	USD	Annual
Costs associated with abnormal production	`AbnormalProductionCosts`	-	USD	Annual
Costs associated with abnormal production	`AbnormalProductionCosts`	$470.00K	USD	1 Quarter
Other	`ImpairmentOfProductInventory`	$698.00K	USD	Annual
Other	`ImpairmentOfProductInventory`	$440.00K	USD	Annual
Other	`ImpairmentOfProductInventory`	$666.00K	USD	Annual
Gross Margin	`GrossProfit`	$122.11M	USD	Annual
Gross Margin	`GrossProfit`	$41.22M	USD	1 Quarter
Gross Margin	`GrossProfit`	$47.11M	USD	1 Quarter
Gross Margin	`GrossProfit`	$55.14M	USD	1 Quarter
Gross Margin	`GrossProfit`	$14.74M	USD	1 Quarter
Gross Margin	`GrossProfit`	$26.88M	USD	1 Quarter
Gross Margin	`GrossProfit`	$186.22M	USD	Annual
Gross Margin	`GrossProfit`	$106.07M	USD	Annual
Gross Margin	`GrossProfit`	$37.65M	USD	1 Quarter
Gross Margin	`GrossProfit`	$26.81M	USD	1 Quarter
Gross Margin	`GrossProfit`	$42.76M	USD	1 Quarter
Selling and administrative	`SellingGeneralAndAdministrativeExpense`	$28.38M	USD	Annual
Selling and administrative	`SellingGeneralAndAdministrativeExpense`	$29.12M	USD	Annual
Selling and administrative	`SellingGeneralAndAdministrativeExpense`	$31.81M	USD	Annual
Accretion of asset retirement obligation	`AssetRetirementObligationAccretionExpense`	$680.00K	USD	Annual
Accretion of asset retirement obligation	`AssetRetirementObligationAccretionExpense`	$750.00K	USD	Annual
Accretion of asset retirement obligation	`AssetRetirementObligationAccretionExpense`	$704.00K	USD	Annual
Insurance settlements from property and business losses	`InsuredEventGainLoss`	$12.50M	USD	Annual
Insurance settlements from property and business losses	`InsuredEventGainLoss`	-	USD	Annual
Insurance settlements from property and business losses	`InsuredEventGainLoss`	$-10.00K	USD	Annual
Other	`OtherCostAndExpenseOperating`	$-7.71M	USD	Annual
Other	`OtherCostAndExpenseOperating`	$643.00K	USD	Annual
Other	`OtherCostAndExpenseOperating`	$911.00K	USD	Annual
Operating Income	`OperatingIncomeLoss`	$75.33M	USD	Annual
Operating Income	`OperatingIncomeLoss`	$92.41M	USD	Annual
Operating Income	`OperatingIncomeLoss`	$173.88M	USD	Annual
Interest expense, including realized and unrealized derivative gains and losses	`InterestExpenseIncludingGainLossOnDerivative`	$869.00K	USD	Annual
Interest expense, including realized and unrealized derivative gains and losses	`InterestExpenseIncludingGainLossOnDerivative`	$1.51M	USD	Annual
Interest expense, including realized and unrealized derivative gains and losses	`InterestExpenseIncludingGainLossOnDerivative`	$806.00K	USD	Annual
Interest income	`InvestmentIncomeInterest`	$1.73M	USD	Annual
Interest income	`InvestmentIncomeInterest`	$819.00K	USD	Annual
Interest income	`InvestmentIncomeInterest`	$161.00K	USD	Annual
Other income (expense)	`OtherNonoperatingIncomeExpense`	$403.00K	USD	Annual
Other income (expense)	`OtherNonoperatingIncomeExpense`	$485.00K	USD	Annual
Other income (expense)	`OtherNonoperatingIncomeExpense`	$523.00K	USD	Annual
Income Before Income Taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$75.04M	USD	Annual
Income Before Income Taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$175.26M	USD	Annual
Income Before Income Taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$92.25M	USD	Annual
Income Tax Expense	`IncomeTaxExpenseBenefit`	$65.85M	USD	Annual
Income Tax Expense	`IncomeTaxExpenseBenefit`	$36.91M	USD	Annual
Income Tax Expense	`IncomeTaxExpenseBenefit`	$29.76M	USD	Annual
Net Income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$24.92M	USD	1 Quarter
Net Income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$28.28M	USD	1 Quarter
Net Income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$11.85M	USD	1 Quarter
Net Income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$18.18M	USD	1 Quarter
Net Income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$45.28M	USD	Annual
Net Income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$3.60M	USD	1 Quarter
Net Income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$55.34M	USD	Annual
Net Income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$109.41M	USD	Annual
Net Income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$11.66M	USD	1 Quarter
Net Income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$25.51M	USD	1 Quarter
Net Income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$30.71M	USD	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	75.08M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	75.01M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	75.18M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	75.15M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	75.04M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	75.28M	shares	Annual
Basic (in dollars per share)	`EarningsPerShareBasic`	$0.24	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$0.38	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$0.74	USD	Annual
Basic (in dollars per share)	`EarningsPerShareBasic`	$0.16	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$0.16	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$0.60	USD	Annual
Basic (in dollars per share)	`EarningsPerShareBasic`	$0.33	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$1.46	USD	Annual
Basic (in dollars per share)	`EarningsPerShareBasic`	$0.34	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$0.05	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$0.41	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.24	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.16	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.74	USD	Annual
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.60	USD	Annual
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.16	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.33	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.34	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$1.45	USD	Annual
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.41	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.38	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.05	USD	1 Quarter

Cash Flow Statement 112 line items

Line Item	Tag	Value	Unit	Period
Net income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$28.28M	USD	1 Quarter
Net income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$11.85M	USD	1 Quarter
Net income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$18.18M	USD	1 Quarter
Net income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$45.28M	USD	Annual
Net income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$3.60M	USD	1 Quarter
Net income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$55.34M	USD	Annual
Net income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$109.41M	USD	Annual
Net income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$11.66M	USD	1 Quarter
Net income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$25.51M	USD	1 Quarter
Net income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$30.71M	USD	1 Quarter
Net income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$24.92M	USD	1 Quarter
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$49.03M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$29.06M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$30.66M	USD	Annual
Insurance settlements from property and business losses	`InsuredEventGainLoss`	$12.50M	USD	Annual
Insurance settlements from property and business losses	`InsuredEventGainLoss`	-	USD	Annual
Insurance settlements from property and business losses	`InsuredEventGainLoss`	$-10.00K	USD	Annual
Depreciation, depletion, amortization, and accretion	`DepreciationDepletionAmortizationAndAccretion`	$35.79M	USD	Annual
Depreciation, depletion, amortization, and accretion	`DepreciationDepletionAmortizationAndAccretion`	$17.33M	USD	Annual
Depreciation, depletion, amortization, and accretion	`DepreciationDepletionAmortizationAndAccretion`	$27.71M	USD	Annual
Stock-based compensation	`ShareBasedCompensation`	$2.91M	USD	Annual
Stock-based compensation	`ShareBasedCompensation`	$4.98M	USD	Annual
Stock-based compensation	`ShareBasedCompensation`	$4.02M	USD	Annual
Unrealized derivative gain	`UnrealizedGainLossOnDerivatives`	$1.29M	USD	Annual
Unrealized derivative gain	`UnrealizedGainLossOnDerivatives`	$620.00K	USD	Annual
Unrealized derivative gain	`UnrealizedGainLossOnDerivatives`	$1.44M	USD	Annual
Other	`OtherNoncashIncomeExpense`	$-1.01M	USD	Annual
Other	`OtherNoncashIncomeExpense`	$-504.00K	USD	Annual
Other	`OtherNoncashIncomeExpense`	$-2.52M	USD	Annual
Trade accounts receivable	`IncreaseDecreaseInAccountsReceivable`	$4.60M	USD	Annual
Trade accounts receivable	`IncreaseDecreaseInAccountsReceivable`	$5.54M	USD	Annual
Trade accounts receivable	`IncreaseDecreaseInAccountsReceivable`	$4.06M	USD	Annual
Other receivables	`IncreaseDecreaseInOtherReceivables`	$5.74M	USD	Annual
Other receivables	`IncreaseDecreaseInOtherReceivables`	$86.00K	USD	Annual
Other receivables	`IncreaseDecreaseInOtherReceivables`	$690.00K	USD	Annual
Refundable income taxes	`IncreaseDecreaseInIncomeTaxesReceivable`	$-2.82M	USD	Annual
Refundable income taxes	`IncreaseDecreaseInIncomeTaxesReceivable`	$-2.05M	USD	Annual
Refundable income taxes	`IncreaseDecreaseInIncomeTaxesReceivable`	$-603.00K	USD	Annual
Inventory	`IncreaseDecreaseInInventories`	$15.81M	USD	Annual
Inventory	`IncreaseDecreaseInInventories`	$-13.88M	USD	Annual
Inventory	`IncreaseDecreaseInInventories`	$9.73M	USD	Annual
Prepaid expenses and other assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-1.38M	USD	Annual
Prepaid expenses and other assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$1.42M	USD	Annual
Prepaid expenses and other assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-1.64M	USD	Annual
Accounts payable, accrued liabilities and accrued employee compensation and benefits	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$-6.15M	USD	Annual
Accounts payable, accrued liabilities and accrued employee compensation and benefits	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$6.66M	USD	Annual
Accounts payable, accrued liabilities and accrued employee compensation and benefits	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$5.22M	USD	Annual
Other liabilities	`IncreaseDecreaseInOtherOperatingLiabilities`	$-1.72M	USD	Annual
Other liabilities	`IncreaseDecreaseInOtherOperatingLiabilities`	$-1.44M	USD	Annual
Other liabilities	`IncreaseDecreaseInOtherOperatingLiabilities`	$1.21M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$173.87M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$81.06M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$123.29M	USD	Annual
Additions to property, plant, and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$135.70M	USD	Annual
Additions to property, plant, and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$86.82M	USD	Annual
Additions to property, plant, and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$95.18M	USD	Annual
Additions to mineral properties and development costs	`PaymentsToAcquireMiningAssets`	$1.57M	USD	Annual
Additions to mineral properties and development costs	`PaymentsToAcquireMiningAssets`	$1.41M	USD	Annual
Additions to mineral properties and development costs	`PaymentsToAcquireMiningAssets`	$6.23M	USD	Annual
Proceeds from Insurance Settlement	`ProceedsFromInsuranceSettlementInvestingActivities`	$1.58M	USD	Annual
Proceeds from Insurance Settlement	`ProceedsFromInsuranceSettlementInvestingActivities`	$806.00K	USD	Annual
Proceeds from Insurance Settlement	`ProceedsFromInsuranceSettlementInvestingActivities`	$10.11M	USD	Annual
Proceeds from liquidation of bond sinking fund	`ProceedsFromSaleOfRestrictedInvestments`	-	USD	Annual
Proceeds from liquidation of bond sinking fund	`ProceedsFromSaleOfRestrictedInvestments`	-	USD	Annual
Proceeds from liquidation of bond sinking fund	`ProceedsFromSaleOfRestrictedInvestments`	$2.10M	USD	Annual
Purchases of investments	`PaymentsToAcquireInvestments`	$18.48M	USD	Annual
Purchases of investments	`PaymentsToAcquireInvestments`	$81.15M	USD	Annual
Purchases of investments	`PaymentsToAcquireInvestments`	$102.03M	USD	Annual
Proceeds from investments	`ProceedsFromSaleMaturityAndCollectionsOfInvestments`	$63.54M	USD	Annual
Proceeds from investments	`ProceedsFromSaleMaturityAndCollectionsOfInvestments`	$31.67M	USD	Annual
Proceeds from investments	`ProceedsFromSaleMaturityAndCollectionsOfInvestments`	$1.14M	USD	Annual
Other	`PaymentsForProceedsFromOtherInvestingActivities`	-	USD	Annual
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$-12.00K	USD	Annual
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$-23.00K	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$-106.52M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$-136.28M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$-174.80M	USD	Annual
Debt issuance costs	`PaymentsOfDebtIssuanceCosts`	-	USD	Annual
Debt issuance costs	`PaymentsOfDebtIssuanceCosts`	-	USD	Annual
Debt issuance costs	`PaymentsOfDebtIssuanceCosts`	$1.45M	USD	Annual
Employee tax withholding paid for restricted stock upon vesting	`PaymentsToFundEmployeeTaxWithholdingDueUponVestingOfRestrictedCommonStock`	$1.32M	USD	Annual
Employee tax withholding paid for restricted stock upon vesting	`PaymentsToFundEmployeeTaxWithholdingDueUponVestingOfRestrictedCommonStock`	$771.00K	USD	Annual
Employee tax withholding paid for restricted stock upon vesting	`PaymentsToFundEmployeeTaxWithholdingDueUponVestingOfRestrictedCommonStock`	$1.12M	USD	Annual
Excess income tax benefit from stock-based compensation	`ExcessTaxBenefitFromShareBasedCompensationFinancingActivities`	-	USD	Annual
Excess income tax benefit from stock-based compensation	`ExcessTaxBenefitFromShareBasedCompensationFinancingActivities`	-	USD	Annual
Excess income tax benefit from stock-based compensation	`ExcessTaxBenefitFromShareBasedCompensationFinancingActivities`	$413.00K	USD	Annual
Proceeds from exercise of stock options	`ProceedsFromStockOptionsExercised`	-	USD	Annual
Proceeds from exercise of stock options	`ProceedsFromStockOptionsExercised`	$330.00K	USD	Annual
Proceeds from exercise of stock options	`ProceedsFromStockOptionsExercised`	$102.00K	USD	Annual
Net cash used in financing activities	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$-1.83M	USD	Annual
Net cash used in financing activities	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$-1.32M	USD	Annual
Net cash used in financing activities	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$-669.00K	USD	Annual
Net Change in Cash and Cash Equivalents	`NetCashProvidedByUsedInContinuingOperations`	$-13.66M	USD	Annual
Net Change in Cash and Cash Equivalents	`NetCashProvidedByUsedInContinuingOperations`	$-26.78M	USD	Annual
Net Change in Cash and Cash Equivalents	`NetCashProvidedByUsedInContinuingOperations`	$-2.76M	USD	Annual
Cash and Cash Equivalents, beginning of period	`CashAndCashEquivalentsAtCarryingValue`	$73.37M	USD	Point-in-time
Cash and Cash Equivalents, beginning of period	`CashAndCashEquivalentsAtCarryingValue`	$89.79M	USD	Point-in-time
Cash and Cash Equivalents, beginning of period	`CashAndCashEquivalentsAtCarryingValue`	$116.57M	USD	Point-in-time
Cash and Cash Equivalents, beginning of period	`CashAndCashEquivalentsAtCarryingValue`	$76.13M	USD	Point-in-time
Cash and Cash Equivalents, end of period	`CashAndCashEquivalentsAtCarryingValue`	$116.57M	USD	Point-in-time
Cash and Cash Equivalents, end of period	`CashAndCashEquivalentsAtCarryingValue`	$73.37M	USD	Point-in-time
Cash and Cash Equivalents, end of period	`CashAndCashEquivalentsAtCarryingValue`	$76.13M	USD	Point-in-time
Cash and Cash Equivalents, end of period	`CashAndCashEquivalentsAtCarryingValue`	$89.79M	USD	Point-in-time
Interest	`InterestIncludingSettlementsOnDerivatives`	$2.13M	USD	Annual
Interest	`InterestIncludingSettlementsOnDerivatives`	$1.35M	USD	Annual
Interest	`InterestIncludingSettlementsOnDerivatives`	$1.94M	USD	Annual
Income taxes	`IncomeTaxesPaidNet`	$13.88M	USD	Annual
Income taxes	`IncomeTaxesPaidNet`	$-3.67M	USD	Annual
Income taxes	`IncomeTaxesPaidNet`	$7.24M	USD	Annual
Capital Expenditures Incurred but Not yet Paid	`CapitalExpendituresIncurredButNotYetPaid`	$18.05M	USD	Annual
Capital Expenditures Incurred but Not yet Paid	`CapitalExpendituresIncurredButNotYetPaid`	$17.35M	USD	Annual
Capital Expenditures Incurred but Not yet Paid	`CapitalExpendituresIncurredButNotYetPaid`	$13.97M	USD	Annual

Stockholders Equity 36 line items

Line Item	Tag	Value	Unit	Period
Balance	`StockholdersEquity`	$651.60M	USD	Point-in-time
Balance	`StockholdersEquity`	$871.13M	USD	Point-in-time
Balance	`StockholdersEquity`	$709.22M	USD	Point-in-time
Balance	`StockholdersEquity`	$757.84M	USD	Point-in-time
Pension liability adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease`	$-44.00K	USD	Annual
Pension liability adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease`	$-698.00K	USD	Annual
Pension liability adjustment	`OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease`	$696.00K	USD	Annual
Unrealized gain on investments held for sale	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-31.00K	USD	Annual
Unrealized gain on investments held for sale	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$31.00K	USD	Annual
Net income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$24.92M	USD	1 Quarter
Net income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$30.71M	USD	1 Quarter
Net income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$11.66M	USD	1 Quarter
Net income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$109.41M	USD	Annual
Net income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$55.34M	USD	Annual
Net income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$25.51M	USD	1 Quarter
Net income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$45.28M	USD	Annual
Net income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$18.18M	USD	1 Quarter
Net income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$3.60M	USD	1 Quarter
Net income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$11.85M	USD	1 Quarter
Net income	`NetIncomeLossAvailableToCommonStockholdersBasic`	$28.28M	USD	1 Quarter
Total comprehensive income	`ComprehensiveIncomeNetOfTax`	$108.68M	USD	Annual
Total comprehensive income	`ComprehensiveIncomeNetOfTax`	$45.27M	USD	Annual
Total comprehensive income	`ComprehensiveIncomeNetOfTax`	$56.04M	USD	Annual
Stock-based compensation	`StockIssuedDuringPeriodValueShareBasedCompensation`	$2.91M	USD	Annual
Stock-based compensation	`StockIssuedDuringPeriodValueShareBasedCompensation`	$4.98M	USD	Annual
Stock-based compensation	`StockIssuedDuringPeriodValueShareBasedCompensation`	$4.02M	USD	Annual
Issuance of common stock upon exercise of stock options	`StockIssuedDuringPeriodValueStockOptionsExercised`	$102.00K	USD	Annual
Issuance of common stock upon exercise of stock options	`StockIssuedDuringPeriodValueStockOptionsExercised`	$330.00K	USD	Annual
Excess income tax benefit from stock-based compensation	`AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation`	$413.00K	USD	Annual
Vesting of restricted common stock, net of restricted common stock used to fund employee income tax withholding due upon vesting	`VestingOfRestrictedCommonStockNetOfRestrictedCommonStockUsedToFundEmployeeIncomeTaxWithholdingDueUponVestingValue`	$771.00K	USD	Annual
Vesting of restricted common stock, net of restricted common stock used to fund employee income tax withholding due upon vesting	`VestingOfRestrictedCommonStockNetOfRestrictedCommonStockUsedToFundEmployeeIncomeTaxWithholdingDueUponVestingValue`	$1.32M	USD	Annual
Vesting of restricted common stock, net of restricted common stock used to fund employee income tax withholding due upon vesting	`VestingOfRestrictedCommonStockNetOfRestrictedCommonStockUsedToFundEmployeeIncomeTaxWithholdingDueUponVestingValue`	$1.12M	USD	Annual
Balance	`StockholdersEquity`	$709.22M	USD	Point-in-time
Balance	`StockholdersEquity`	$651.60M	USD	Point-in-time
Balance	`StockholdersEquity`	$871.13M	USD	Point-in-time
Balance	`StockholdersEquity`	$757.84M	USD	Point-in-time

Comprehensive Income 3 line items

Line Item	Tag	Value	Unit	Period
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Tax	`OtherComprehensiveIncomeMinimumPensionLiabilityNetAdjustmentTax`	$456.00K	USD	Annual
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Tax	`OtherComprehensiveIncomeMinimumPensionLiabilityNetAdjustmentTax`	$451.00K	USD	Annual
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Tax	`OtherComprehensiveIncomeMinimumPensionLiabilityNetAdjustmentTax`	$28.00K	USD	Annual

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