Earnings Per Share - Securities Excluded from the Computation of Diluted Earnings (Loss) Per Common Share (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 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)	375	511	302	486
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)	88	3	69	27
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	138	275