Share-Based Compensation - Restricted Stock Units (Details) - Restricted Stock Units - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Number of Units
Unvested, at beginning of period (in shares)	14	74
Granted (in shares)	0	4
Forfeited (in shares)	(2)	0
Vested (in shares)	(12)	(64)
Unvested, at end of period (in shares)	0	14
Weighted Average Grant Date Fair Value Per Share
Unvested, balance at beginning of period (in dollars per share)	$ 11.38	$ 14.64
Granted (in dollars per share)	0	7.54
Forfeited (in dollars per share)	13.00	0
Vested (in dollars per share)	11.14	14.88
Unvested, balance at end of period (in dollars per share)		$ 11.38