Income Taxes - Unrecognized Tax Positions (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits at beginning of year	$ 256	$ 256	$ 256
Gross changes		0	0
Gross increases - current year tax positions	0
Unrecognized tax benefits at end of year	$ 256	$ 256	$ 256