Income Taxes - Additional Information (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Income Tax [Line Items]
Increased in additional paid-in capital	$ 550	$ 1,175	$ 290
Valuation allowances	8,625	5,815
Reduction in the deferred income tax assets related to share-based compensation	24	35
Gross unrecognized tax benefit	1,607	1,438	1,276
Unrecognized tax benefits, if recognized	1,045
Accrued interest and penalties related to unrecognized tax benefits	667
Accrued interest and penalties recorded during the current year	123
State and Local Jurisdiction [Member]
Income Tax [Line Items]
Deferred tax assets, operating loss carryforwards	9,189	6,315
Domestic Tax Authority [Member]
Income Tax [Line Items]
Deferred tax assets, operating loss carryforwards	$ 4,948	$ 3,400