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Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2014
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Dec. 31, 2013
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| Income Tax Disclosure [Abstract] | ||||
| Income tax expense | $ 6,164us-gaap_IncomeTaxExpenseBenefit | $ 3,754us-gaap_IncomeTaxExpenseBenefit | $ 11,017us-gaap_IncomeTaxExpenseBenefit | $ 3,662us-gaap_IncomeTaxExpenseBenefit |
| Pre-tax income (loss) | 21,767us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 16,337us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 49,902us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 19,879us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments |
| Decrease of deferred tax liability | 3,224thr_DeferredTaxLiabilitiesIncreaseDecreaseofDeferredTaxLiability | 575thr_DeferredTaxLiabilitiesIncreaseDecreaseofDeferredTaxLiability | ||
| Effective Income Tax Rate after Discrete Event | 18.40%thr_EffectiveIncomeTaxRateAfterDiscreteEvent | |||
| Income Tax Expense (Benefit) Recorded Due To Release Of Liability Recorded For Income Tax Uncertainties | (1,047)thr_IncomeTaxExpenseBenefitRecordedDueToReleaseOfLiabilityRecordedForIncomeTaxUncertainties | |||
| Annual effective tax rate before discrete events | 28.50%thr_EffectiveIncomeTaxRateBeforeDiscreteEvent | 26.10%thr_EffectiveIncomeTaxRateBeforeDiscreteEvent | ||
| Long-term liability for uncertain tax positions | 733us-gaap_LiabilityForUncertainTaxPositionsNoncurrent | 733us-gaap_LiabilityForUncertainTaxPositionsNoncurrent | ||
| Interest and penalties accrued as income tax expense | $ 46us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense | |||
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- Definition
Deferred Tax Liabilities, Increase (Decrease) of Deferred Tax Liability No definition available.
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- Definition
Represents anticipated annual effective income tax rate after discrete events related to additional accrued interest and penalties recorded on uncertain tax positions. No definition available.
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- Definition
Represents anticipated annual effective income tax rate before discrete events related to additional accrued interest and penalties recorded on uncertain tax positions. No definition available.
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- Definition
Income Tax Expense (Benefit) Recorded Due To Release Of Liability Recorded For Income Tax Uncertainties No definition available.
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- Definition
Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The noncurrent portion of the amount recognized for uncertain tax positions as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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