Stock-Based Compensation and Other Benefit Plans - Restricted Stock Share Activity and Units Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Restricted Stock
Shares
Non-vested at beginning of period (in shares)	2,795,100	1,629,020
Granted (in shares)	1,702,289	3,114,978
Vested (in shares)	(1,453,854)	(711,988)
Forfeited (in shares)	(1,275,172)	(1,236,910)
Non-vested at end of period (in shares)	1,768,363	2,795,100
Weighted- Average Fair Value at Date of Grant
Non-vested at beginning of period (in dollars per share)	$ 1.00	$ 2.66
Granted to employees (in dollars per share)	1.73	0.83
Vested (in dollars per share)	1.24	2.94
Forfeited (in dollars per share)	1.36	1.65
Non-vested at end of period (in dollars per share)	$ 1.61	$ 1.00
Restricted Stock Units (RSUs)
Shares
Non-vested at beginning of period (in shares)	1,227,549	1,038,474
Granted (in shares)	0	922,786
Forfeited (in shares)	(184,173)	(733,711)
Non-vested at end of period (in shares)	1,043,376	1,227,549
Weighted- Average Fair Value at Date of Grant
Non-vested at beginning of period (in dollars per share)	$ 1.25	$ 3.24
Granted to employees (in dollars per share)	0	1.19
Forfeited (in dollars per share)	2.61	3.79
Non-vested at end of period (in dollars per share)	$ 1.07	$ 1.25