Income Taxes - Components of Income Tax Provision (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current:
Federal	$ (26)	$ (173)	$ (70)
State and local	(1,267)	(1,411)	(1,309)
Benefit (provision) for income taxes	$ (1,293)	$ (1,584)	$ (1,379)