Income Taxes - Reconciliation of Income Tax Benefit to Statutory Rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
$
Income tax benefit at federal statutory rate	$ (15,042)	$ (6,854)
Foreign rate differential	13	1,118
Nondeductible/nontaxable items	118	(1,823)
Valuation allowance	15,129	10,749
Research and development credit	(300)	(914)
Research and development true-up	(106)	(301)
Deferred adjustments	(10)	2,139
Restructuring	0	(4,108)
Other	457	(218)
Total income tax expense (benefit)	$ 259	$ (212)
%
Income tax benefit at federal statutory rate	21.00%	21.00%
Foreign rate differential	(0.02%)	(3.43%)
Nondeductible/nontaxable items	(0.16%)	5.59%
Valuation allowance	(21.12%)	(32.94%)
Research and development credit	0.42%	2.80%
Research and development true-up	0.15%	0.92%
Deferred adjustments	0.01%	(6.55%)
Restructuring	0.00%	12.59%
Other	(0.64%)	0.67%
Total income tax expense (benefit)	(0.36%)	0.65%