Additional Balance Sheet Information (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Mar. 31, 2021
Current liabilities:
Salaries, wages, and related benefits	$ 6,207	$ 8,454
Other taxes payable	1,510	1,796
Accrued legal settlements		200
Severance liabilities	63	79
Professional fees	81	97
Other	354	607
Total	8,215	11,233
Liabilities Noncurrent:
Uncertain tax positions	1,141	1,129
Asset retirement obligations	170	170
Employee benefit obligations	3,072	2,639
Other	73	73
Total	$ 4,456	$ 4,011

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