Net Income Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Number of outstanding units not included in computation of Diluted EPS (in shares)			203,000			1,461,000
Numerator:
Net income (loss)	$ 75,578	$ 60,298	$ 15,419	$ (22,071)	$ 135,876	$ (6,652)
Denominator:
Basic earnings per share weighted average shares	40,179,000		43,837,000		40,239,000	46,614,000
Dilutive effect of employee stock awards and warrants	1,252,000		382,000		1,223,000
Diluted earnings per share weighted average shares	41,431,000		44,219,000		41,462,000	46,614,000
Basic earnings per share (in dollars per share)	$ 1.88		$ 0.35		$ 3.38	$ (0.14)
Diluted earnings per share (in dollars per share)	$ 1.82		$ 0.35		$ 3.28	$ (0.14)
Performance Share Units (PSUs)
Number of outstanding units not included in computation of Diluted EPS (in shares)					400,000	538,000