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Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Current:
State	$ 1	$ 1
Total current provision	1	1
Deferred:
Federal	(4,043)	(2,634)
State	(92)	(148)
Total deferred (benefit) expense	(4,135)	(2,782)
Valuation allowance	4,134	2,781
Total income tax provision	$ 0	$ 0

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