Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Income Tax [Line Items]
Tax expense for the one-time transition tax		$ 2,866
Tax benefit re-measure deferred taxes		3,228
One-time mandatory repatriation transition tax		2,866
GILTI deferred tax asset	$ 982
Increased in additional paid-in capital	0	243	$ 687
Valuation allowances	38,758	23,312
Gross unrecognized tax benefit	1,615	1,852	$ 1,199
Unrecognized tax benefits, if recognized	949
Accrued interest and penalties related to unrecognized tax benefits	528
Accrued interest and penalties recorded during the current year	12
Domestic Tax Authority
Income Tax [Line Items]
Operating loss carryforwards	7,740	5,204
Deferred tax assets, operating loss carryforwards	4,620	5,156
State and Local Jurisdiction
Income Tax [Line Items]
Deferred tax assets, operating loss carryforwards	17,381	19,397
Foreign Tax Authority
Income Tax [Line Items]
Operating loss carryforwards	$ 4,676	$ 4,598