Earnings Per Share - Securities Excluded from the Computation of Diluted Earnings (Loss) Per Common Share (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Securities excluded in computation of diluted earning per share (in shares)	833	511	359	494
Restricted stock awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Securities excluded in computation of diluted earning per share (in shares)	329	0	46	18
Common stock warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Securities excluded in computation of diluted earning per share (in shares)	275	275	183	275