Income Taxes - Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Current federal tax expense (benefit)	$ (8)	$ 404
Deferred federal income tax expense (benefit)	0	0
Federal income tax expense (benefit), continuing operations	(8)	404
Current state and local tax expense (benefit)	12	(13)
Deferred state and local income tax expense (benefit)	0	0
State and local income tax expense (benefit), continuing operations	12	(13)
Current foreign tax expense (benefit)	356	500
Deferred foreign income tax expense (benefit)	(42)	(345)
Foreign income tax expense (benefit), continuing operations	314	155
Current income tax expense (benefit)	360	891
Deferred income tax expense (benefit)	(42)	(345)
Income tax expense	$ 318	$ 546