Description of Business and Summary of Significant Accounting Policies - Cash, Cash Equivalents and Restricted Cash Presented (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Cash and cash equivalents	$ 25,205	$ 14,217
Restricted cash	263	146
Cash, cash equivalents, restricted cash and restricted cash equivalents	$ 25,468	$ 14,363	$ 7,071	$ 10,152