Net Income Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Number of outstanding units not included in computation of Diluted EPS (in shares)	78,000			1,093,000			375,000	715,000
Numerator:
Net income	$ 23,478	$ 15,419	$ (22,071)	$ 48,372	$ 53,951	$ 17,734	$ 16,826	$ 120,057
Denominator:
Basic earnings per share weighted average shares	41,826,000			50,593,000			45,018,000	50,531,000
Dilutive effect of employee stock awards and warrants	754,000			43,000			522,000	105,000
Diluted earnings per share weighted average shares	42,580,000			50,636,000			45,540,000	50,636,000
Basic earnings per share (in dollars per share)	$ 0.56			$ 0.96			$ 0.37	$ 2.38
Diluted earnings per share (in dollars per share)	$ 0.55			$ 0.96			$ 0.37	$ 2.37
Performance Share Units (PSUs)
Number of outstanding units not included in computation of Diluted EPS (in shares)							422,000	334,000