The Company and Basis of Presentation (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
The Company and Basis of Presentation
Cash	$ 25,837						$ 25,837		$ 33,364
Accumulated deficit	102,951						102,951		$ 95,795
Net losses	$ 3,818	$ 734	$ 2,604	$ 3,113	$ 3,303	$ 2,875	$ 7,156	$ 9,291