Commitments and Contingencies - Operating Lease Expense and Variable Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Commitments and Contingencies Disclosure [Abstract]
Operating lease expense	$ 89	$ 102	$ 265	$ 279
Variable lease expense	$ 42	$ 41	$ 144	$ 126