Description of Business and Summary of Significant Accounting Policies - Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Mar. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Cash and cash equivalents	$ 28,166	$ 25,205
Restricted cash	240	263
Cash, cash and cash equivalents and restricted cash	$ 28,406	$ 25,468	$ 15,769	$ 14,363