Property and Equipment, Net - Schedule of Property and Equipment (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 33,416	$ 31,423
Accumulated depreciation and amortization	(21,165)	(17,632)
Property and equipment, net	12,251	13,791
Furniture and equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	8,849	9,173
Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	16,982	16,349
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	4,836	4,522
Project expenditures not yet in use [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 2,749	$ 1,379