Additional Balance Sheet Information (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Mar. 31, 2020
Current liabilities:
Salaries, wages, and related benefits	$ 5,053	$ 6,945
Payroll taxes deferred under CARES Act	911
Other taxes payable	2,084	1,649
Accrued legal settlements	50
Severance liabilities	329	32
Professional fees	55	50
Other	371	357
Total	8,853	9,033
Liabilities Noncurrent:
Uncertain tax positions	1,123	1,103
Asset retirement obligations	170	170
Payroll taxes deferred under CARES Act	911
Employee benefit obligations	1,466	511
Other	70	76
Total	$ 3,740	$ 1,860