Additional Balance Sheet Information (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Mar. 31, 2019
Accrued liabilities:
Salaries, wages, and related benefits	$ 10,438	$ 12,755
Other taxes payable	1,231	1,041
Accrued legal settlements	0	15
Severance liabilities	86	46
Professional fees	127	67
Deferred rent	0	273
Other	600	521
Total	12,482	14,718
Other non-current liabilities:
Uncertain tax positions	1,097	1,083
Deferred rent and asset retirement obligations	165	2,613
Employee benefit obligations	279	174
Other	76	76
Total	$ 1,617	$ 3,946