Organization and Summary of Significant Accounting Policies - Cash and Restricted Cash (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Accounting Policies [Abstract]
Cash	$ 3,027	$ 3,677
Restricted cash	250	250
Cash and restricted cash	$ 3,277	$ 3,927	$ 457	$ 49