Organization and Summary of Significant Accounting Policies - Additional information (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021
Schedule of Organization and Summary of Significant Accounting Policies [Line Items]
Cash and cash equivalents	$ 8,138	$ 6,037	$ 11,629
October 2020 Offering
Schedule of Organization and Summary of Significant Accounting Policies [Line Items]
Cash and cash equivalents	8,100
Fair Value, Recurring [Member] \| Money Market Funds
Schedule of Organization and Summary of Significant Accounting Policies [Line Items]
Cash and cash equivalents	$ 7,800	$ 5,700