Additional Balance Sheet Information (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Mar. 31, 2017
Accrued liabilities:
Salaries, wages, and related benefits	$ 7,352	$ 6,473
Other taxes payable	819	750
Accrued legal settlements	150	0
Restructuring liabilities	203	0
Severance liabilities	16	11
Professional fees	510	221
Deferred rent	420	433
Other	373	443
Total	9,843	8,331
Other non-current liabilities:
Uncertain tax positions	1,508	1,479
Deferred rent	2,399	2,444
Other	78	79
Total	$ 3,985	$ 4,002