Foreign Currency Transactions and Derivatives (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Mar. 31, 2013
Foreign Currency Transactions and Derivatives [Abstract]
Foreign currency net gains or (losses) resulting from assets and liabilities denominated in non-local currency and current inter-company balances	$ (465,000)	$ (323,000)	$ (3,400,000)	$ (1,400,000)
Hedging transaction net (loss) from foreign exchange derivative contracts	81,000	54,000	978,000	525,000
Derivative, maturity date			Jan. 31, 2014		Apr. 30, 2013
Amount of derivative contracts maturing	3,000,000		3,000,000		1,800,000
Amount of derivative contracts to purchase	$ 12,000,000		$ 12,000,000		$ 15,500,000