Income Taxes - Schedule of Unrecognized Tax Benefits Rollforward (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits, beginning of period	$ 687	$ 988	$ 1,617
Reductions:
Relating to positions taken during prior year	0	(300)	(604)
Relating to lapse in statute	(107)	(1)	(25)
Unrecognized tax benefits, end of period	$ 580	$ 687	$ 988