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Income Taxes (Components Of Income Tax Provision (Benefit)) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Components of income before provision (benefit) for income taxes [Abstract]      
Domestic $ (5,209)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic $ 8,509us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic $ 16,668us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
Foreign (39,071)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign (584)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign 5,352us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign
(Loss) Income Before Provision (Benefit) for Income Taxes and Equity in Net Income of Unconsolidated Entities (44,280)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments 7,925us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments 22,020us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Components of the income tax provision (benefit) [Abstract]      
Current 79us-gaap_CurrentIncomeTaxExpenseBenefit 83us-gaap_CurrentIncomeTaxExpenseBenefit 296us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred 10,350ish_IncomeTaxExpenseBenefitDeferred (12,351)ish_IncomeTaxExpenseBenefitDeferred (453)ish_IncomeTaxExpenseBenefitDeferred
(Benefit)/Provision for Income Taxes $ 10,429us-gaap_IncomeTaxExpenseBenefit $ (12,268)us-gaap_IncomeTaxExpenseBenefit $ (157)us-gaap_IncomeTaxExpenseBenefit