Organization and Summary of Significant Accounting Policies - Summary of Customer Allowances for Trade Promotions and Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Mar. 31, 2020
Accounting Policies [Abstract]
Trade promotions	$ 2,415	$ 2,153
Allowance for doubtful accounts	184	183
Trade promotions and allowance for doubtful accounts	$ 2,599	$ 2,336