Income Taxes - Components of tax (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current:
Federal	$ 0	$ (1)	$ (141)
State	3,541	(78)	(60)
Total current tax expense (benefit)	3,541	(79)	(201)
Deferred:
Federal	(2,066)	0	0
State	(1,611)	0	0
Total deferred benefit	(3,677)	0	0
Income tax benefit	$ (136)	$ (79)	$ (201)