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Fair Value Measurements - Swap (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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Mar. 31, 2014
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| Unrealized Loss In Accumulated Other Comprehensive Loss [Roll Forward] | |||||
| Unrealized net gain (loss), beginning of period | $ 70us-gaap_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax | $ (304)us-gaap_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax | $ (81)us-gaap_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax | $ 0us-gaap_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax | |
| Add: gain/(loss) from change in fair value of cash flow hedge | (484)us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax | 91us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax | (918)us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax | (418)us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax | |
| Less: Loss reclassified to earnings from effective hedge | (271)us-gaap_InterestRateCashFlowHedgeGainLossReclassifiedToEarningsNet | (303)us-gaap_InterestRateCashFlowHedgeGainLossReclassifiedToEarningsNet | (834)us-gaap_InterestRateCashFlowHedgeGainLossReclassifiedToEarningsNet | (508)us-gaap_InterestRateCashFlowHedgeGainLossReclassifiedToEarningsNet | |
| Less: ineffective portion of hedge transferred to earnings | (11)us-gaap_DerivativeInstrumentsLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTesting | 0us-gaap_DerivativeInstrumentsLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTesting | (33)us-gaap_DerivativeInstrumentsLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTesting | 0us-gaap_DerivativeInstrumentsLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTesting | |
| Unrealized net gain (loss), end of period | (132)us-gaap_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax | 90us-gaap_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax | (132)us-gaap_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax | 90us-gaap_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax | |
| Interest Rate Swap | |||||
| Unrealized Loss In Accumulated Other Comprehensive Loss [Roll Forward] | |||||
| Cash Flow Hedges Derivative Instruments at Fair Value, Net |
(57)us-gaap_CashFlowHedgesDerivativeInstrumentsAtFairValueNet / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember |
(57)us-gaap_CashFlowHedgesDerivativeInstrumentsAtFairValueNet / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember |
108us-gaap_CashFlowHedgesDerivativeInstrumentsAtFairValueNet / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember |
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| Revolving credit facility | Interest Rate Swap | |||||
| Unrealized Loss In Accumulated Other Comprehensive Loss [Roll Forward] | |||||
| Derivative, fixed interest rate |
3.12%us-gaap_DerivativeFixedInterestRate / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember / us-gaap_LongtermDebtTypeAxis = us-gaap_RevolvingCreditFacilityMember |
3.12%us-gaap_DerivativeFixedInterestRate / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember / us-gaap_LongtermDebtTypeAxis = us-gaap_RevolvingCreditFacilityMember |
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| Interest, period payment, May 1, 2016 through April 30, 2018 |
5,200thr_DerivativeUnhedgedPeriodicInterestPaymentsinPeriodOne / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember / us-gaap_LongtermDebtTypeAxis = us-gaap_RevolvingCreditFacilityMember |
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| Interest, period payment, May 1, 2018 through April 19, 2019 |
$ 49,780thr_DerivativeUnhedgedPeriodicInterestPaymentsinPeriodTwo / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember / us-gaap_LongtermDebtTypeAxis = us-gaap_RevolvingCreditFacilityMember |
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| X | ||||||||||
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- Definition
Derivative, Unhedged Periodic Interest Payments in Period One No definition available.
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| X | ||||||||||
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- Definition
Derivative, Unhedged Periodic Interest Payments in Period One No definition available.
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- Details
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| X | ||||||||||
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- Definition
Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Net fair value of all derivative instruments designated as cash flow hedging instruments, which is ordinarily reflected within other comprehensive income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Fixed interest rate related to the interest rate derivative. No definition available.
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- Definition
The portion of losses on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of net gains or losses on interest rate cash flow hedges reclassified during the period to earnings from accumulated other comprehensive income upon the hedged transaction affecting earnings. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount after tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Details
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