Income Taxes - Summary of components of income tax expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Current income tax expense:
Federal	$ 128	$ 302
State	28	148
Total current tax expense	156	450
Deferred income tax expense:
Federal	(59)	(147)
State	(25)	(63)
Total deferred tax expense	(84)	(210)
Total income tax expense	$ 72	$ 240
Income tax expense statutory rate	21.00%	21.00%