Restructuring Charges (Details Textual) (USD $) In Thousands, unless otherwise specified	9 Months Ended	3 Months Ended	9 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 December 2012 Restructuring Program [Member] Positions	Dec. 31, 2011 April 2011 Restructuring Program [Member]	Dec. 31, 2011 April 2011 Restructuring Program [Member] Positions
Restructuring Charges (Textual) [Abstract]
Number of positions eliminated or relocated under restructuring program			70		25
Severance costs			$ 1,529	$ 900	$ 900
Asset impairment	$ 4,689	$ 0	$ 4,689

The charge against earnings in the period for known and estimated costs of termination benefits provided to current employees that are involuntarily terminated under a benefit arrangement associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding costs or losses pertaining to an entity newly acquired in a business combination or a discontinued operation as defined by generally accepted accounting principles and costs associated with one-time termination benefits.

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