Income Taxes - Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Current:
Federal	$ 0	$ 101
State	45	2
Foreign	0	0
Total current expense	45	103
Deferred:
Federal	0	0
State	104	(125)
Foreign	0	0
Total deferred expense (benefit)	104	(125)
Income tax expense (benefit)	$ 149	$ (22)