Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Foreign Exchange Contracts (Details)

v2.4.1.9
Fair Value Measurements - Foreign Exchange Contracts (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Maximum term of forward contracts 30 days    
Net foreign currency loss $ 1,254thr_ForeignCurrencyTransactionGainLossNetOfImpactOfForeignCurrencyDerivativesOnEarnings $ 613thr_ForeignCurrencyTransactionGainLossNetOfImpactOfForeignCurrencyDerivativesOnEarnings $ 423thr_ForeignCurrencyTransactionGainLossNetOfImpactOfForeignCurrencyDerivativesOnEarnings
Foreign Exchange Forward Contracts [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Foreign exchange contract forwards, assets 87us-gaap_ForeignCurrencyContractAssetFairValueDisclosure
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeForwardMember
35us-gaap_ForeignCurrencyContractAssetFairValueDisclosure
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeForwardMember
 
Foreign exchange contract forwards, liabilities 110us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeForwardMember
93us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeForwardMember
 
Gain (loss) on realized on foreign currency related to forward contracts (559)us-gaap_GainLossOnForeignCurrencyDerivativesRecordedInEarningsNet
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeForwardMember
(309)us-gaap_GainLossOnForeignCurrencyDerivativesRecordedInEarningsNet
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeForwardMember
3us-gaap_GainLossOnForeignCurrencyDerivativesRecordedInEarningsNet
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeForwardMember
Interest Rate Swap [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Derivative Liability $ (612)us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
$ 108us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember