Financial Instruments (Details 3) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Derivative Financial Instruments
Asset Derivatives, Fair Value	$ 155	$ 1,197
Liability Derivatives, Fair Value	701	707
Designated as hedging instruments: | Cash Flow Hedges
Derivative Financial Instruments
Asset Derivatives, Fair Value	4	1,165
Liability Derivatives, Fair Value	243
Not designated as hedging instruments:
Derivative Financial Instruments
Asset Derivatives, Fair Value	151	32
Liability Derivatives, Fair Value	458	707
Not designated as hedging instruments: | Foreign exchange forward contract
Derivative Financial Instruments
Asset Derivatives, Fair Value	23
Liability Derivatives, Fair Value	96	270
Not designated as hedging instruments: | Foreign exchange swap contract
Derivative Financial Instruments
Asset Derivatives, Fair Value	128	32
Liability Derivatives, Fair Value	$ 362	$ 437