Goodwill and Intangible Assets - Schedule of Goodwill (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Goodwill [Roll Forward]
Balance at beginning of period			$ 135,285
Accumulated impairment losses as of March 31, 2012			(120,087)
Goodwill, beginning balance	17,158	14,128	15,198
Impact of foreign currency translation		(1,070)
Acquisitions	3,444
Allocation of goodwill to UK entity	(610)
Goodwill, ending balance	$ 17,158	$ 14,128	$ 15,198