Foreign Currency Derivative Instruments (Details 2) (USD $)	Mar. 31, 2013	Mar. 31, 2012
Foreign Currency Derivatives [Abstract]
Total notional amount of foreign currency forward contracts not designated as hedges	$ 31,900,000
Gross amounts of recognized assets (liabilities)	(483,000)	(41,000)
Gross amounts offset in the condensed consolidated balance sheets	85,000	5,000
Net amount of recognized asset (liability) presented in condensed consolidated balance sheets	$ 568,000	$ 46,000