Income Taxes - Income Tax Provision (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Current tax provision
U.S. Federal	$ 1,274	$ 69
State and local	1,209	258
Total current tax provision	2,483	327
Deferred tax benefit
U.S. Federal	(643)	(356)
State and local	(658)	(253)
Total deferred tax benefit	(1,301)	(609)
Income tax provision (benefit)	$ 1,182	$ (282)