Additional Balance Sheet Information (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Mar. 31, 2019
Accrued liabilities:
Salaries, wages, and related benefits	$ 8,269	$ 12,929
Other taxes payable	957	1,041
Accrued legal settlements	0	15
Severance liabilities	146	46
Professional fees	131	67
Deferred rent	0	273
Other	481	521
Total	9,984	14,892
Other non-current liabilities:
Uncertain tax positions	1,096	1,083
Deferred rent and asset retirement obligations	165	2,613
Other	77	76
Total	$ 1,338	$ 3,772