Income Taxes - Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Deferred income tax assets
Net operating loss carryforward	$ 31,840	$ 25,668	$ 19,621
Stock-based compensation	1,965	1,270	15,360
Credit carryforwards	129	123	268
Other	1,469	1,324	425
Gross deferred income tax assets	35,403	28,385	35,674
Valuation allowance	(32,026)	(21,920)	(35,154)
Net deferred income tax assets	3,377	6,465	520
Deferred income tax liabilities
Depreciation and amortization	(754)	(751)	0
Intangibles and goodwill	(1,947)	(5,069)	(269)
Other	(175)	(780)	0
Net deferred income tax assets/(liabilities)	$ 501		$ 251
Net deferred income tax assets/(liabilities)		$ 135