Earnings per Common Share - Details of Earnings Per Share Calculations (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Earnings per Common Share
Net income (loss)	$ (13,773)	$ (975)	$ (6,685)	$ (9,151)	$ (1,756)	$ (1,678)	$ (2,025)	$ 4	$ (30,584)	$ (5,455)	$ 7,864
Weighted average common shares outstanding:
Basic									39,614	40,035	40,050
Incremental shares with dilutive effect:
Restricted stock awards (in shares)											86
Diluted (in shares)									39,614	40,035	40,136
Basic	$ (0.35)	$ (0.02)	$ (0.17)	$ (0.23)	$ (0.04)	$ (0.04)	$ (0.05)	$ 0.00	$ (0.77)	$ (0.14)	$ 0.20
Diluted	$ (0.35)	$ (0.02)	$ (0.17)	$ (0.23)	$ (0.04)	$ (0.04)	$ (0.05)	$ 0.00	$ (0.77)	$ (0.14)	$ 0.20