Property and Equipment - Major classifications 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	$ 9,644	$ 9,599
Less: accumulated depreciation	(8,334)	(7,467)
Property and equipment, net	1,310	2,132
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,124	1,116
Computer software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	2,749	2,735
Furniture, fixtures and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 5,771	$ 5,748