Commitments and Contingencies (Details) (USD $)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Commitments and Contingencies Disclosure [Abstract]
Annual rental expenses for operating leases	$ 9,900,000	$ 10,100,000	$ 9,800,000
Minimum lease payments
2015	8,734,000
2016	5,379,000
2017	2,805,000
2018	2,248,000
2019	1,347,000
Thereafter	1,863,000
Sublease rental income
2015	(252,000)
2016	(21,000)
Net minimum lease payments
2015	8,482,000
2016	5,358,000
2017	2,805,000
2018	2,248,000
2019	1,347,000
Thereafter	$ 1,863,000