Income Taxes (Details 6) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Reconciliation of gross unrecognized tax benefits (excluding interest and penalties)
Beginning of fiscal year	$ 5,395	$ 6,321	$ 5,156
Additions for tax positions of the current year	639	35	433
Additions for tax positions of prior years	19	37	820
Reductions for tax positions of prior years	(28)	(640)	(39)
Lapse in statute of limitations	0	(358)	0
Settlements	(334)	0	(49)
End of fiscal year	$ 5,691	$ 5,395	$ 6,321