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Earnings per Common Share - Details of Earnings Per Share Calculations (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Earnings per Common Share
Net loss	$ (6,685)	$ (9,151)	$ (2,025)	$ 4	$ (15,836)	$ (2,021)
Weighted average common shares outstanding:
Basic	39,694		40,028		39,692	40,059
Incremental shares with dilutive effect:
Diluted (in shares)	39,694		40,028		39,692	40,059
Basic	$ (0.17)		$ (0.05)		$ (0.40)	$ (0.05)
Diluted	$ (0.17)		$ (0.05)		$ (0.40)	$ (0.05)

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