Income Taxes - Schedule of Components of Income Tax (Benefit) Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current:
Federal	$ 0	$ 0	$ 0
State	(3,695)	(111)	(1,063)
Deferred:
Federal	0	0	0
State	0	0	0
Income tax benefit	$ (3,695)	$ (111)	$ (1,063)