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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
	Mar. 31, 2021	Mar. 31, 2020
Earnings per Common Share
Net income (loss)	$ (9,151)	$ 4
Weighted average common shares outstanding:
Basic	39,996	40,127
Incremental shares with dilutive effect:
Restricted stock awards (in shares)		211
Diluted (in shares)	39,996	40,338
Basic	$ (0.23)	$ 0.00
Diluted	$ (0.23)	$ 0.00

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