Earnings Per Share - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Earnings Per Share [Abstract]
Net income	$ (23,687)	$ (19,587)	$ 49,228	$ 38,367
Average common shares outstanding:
Average common shares outstanding - basic (in shares)	36,214	34,939	35,950	33,491
Additional shares for stock-based compensation plans	0	0	30	48
Average common shares outstanding - diluted (in shares)	36,214	34,939	35,980	33,539
Earnings (loss) per share of common stock
Basic (in dollars per share)	$ (0.65)	$ (0.56)	$ 1.37	$ 1.15
Diluted (in dollars per share)	$ (0.65)	$ (0.56)	$ 1.37	$ 1.14
Antidilutive shares	45	85	1	0