Preferred Stock and Stockholders' Equity - Change in Preferred Stock Carrying Value (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Increase (Decrease) in Temporary Equity [Roll Forward]
Gross proceeds from issuance of shares	$ 61,793
Series B Convertible Preferred Stock
Increase (Decrease) in Temporary Equity [Roll Forward]
Beginning balance	105,086	$ 93,012	$ 0
Gross proceeds from issuance of shares	0	0	100,000
Relative fair value of Warrants issued	0	0	(1,076)
Recognition of bifurcated embedded derivative	0	0	(2,295)
Allocation of issuance costs to Preferred Stock	0	0	(4,259)
Accrual of in-kind dividends	14,008	11,121	590
Amortization	335	953	52
Temporary Equity, Redemption	119,429	0	0
Ending balance	0	105,086	$ 93,012
Series D Preferred Stock
Increase (Decrease) in Temporary Equity [Roll Forward]
Beginning balance	0
Relative fair value of Warrants issued	(14,839)
Recognition of bifurcated embedded derivative	(282)
Accrual of in-kind dividends	6,222
Amortization	913
Ending balance	$ 53,807	$ 0