Income Taxes - Schedule of Components of Income Tax Expense (Benefit) Attributable to Continuing Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Current, Federal	$ 765	$ 459	$ 47
Current, State	0	0	0
Current, Foreign	619	1,950	(274)
Total current	1,384	2,409	(227)
Deferred, Federal	60	(18)	43
Deferred, State	0	0	0
Deferred, Foreign	(302)	0	0
Total deferred	(242)	(18)	43
Income tax (benefit) expense	$ 1,142	$ 2,391	$ (184)