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Stock-Based Compensation - Stock Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Stock-Based Compensation
Total stock-based compensation	$ 834	$ 667	$ 1,628	$ 1,274
Stock options
Stock-Based Compensation
Unrecognized compensation expense related to unvested stock options	3,500		$ 3,500
Weighted average period over which compensation expense is expected to be recognized			2 years 4 months 24 days
Restricted stock units
Stock-Based Compensation
Unrecognized compensation expense related to unvested RSUs	1,100		$ 1,100
Weighted average period over which compensation expense is expected to be recognized			2 years 3 months 18 days
Phantom Share Units (PSUs)
Stock-Based Compensation
Unrecognized compensation expense related to unvested RSUs	600		$ 600
Weighted average period over which compensation expense is expected to be recognized			2 years 4 months 24 days
Cost of revenues
Stock-Based Compensation
Total stock-based compensation	51	47	$ 108	93
General and administrative expense
Stock-Based Compensation
Total stock-based compensation	659	560	1,275	1,092
Sales and marketing
Stock-Based Compensation
Total stock-based compensation	73	35	143	54
Research and development expense
Stock-Based Compensation
Total stock-based compensation	51	25	102	50
Restructuring costs
Stock-Based Compensation
Total stock-based compensation	0	0	0	42
Income (loss) from discontinued operations before gain on sale, net of tax
Stock-Based Compensation
Total stock-based compensation	$ 0	$ 0	$ 0	$ (57)