Earnings Per Share - Schedule of Reconciliation from Basic to Diluted Average Common Shares (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Earnings Per Share [Abstract]
Net income	$ 28,324	$ 36,374	$ 60,444	$ 69,723
Average Common Shares:
Basic (weighted-average outstanding shares) (in shares)	11,974	11,921	11,959	11,910
Dilutive potential common shares from stock options (in shares)	70	72	73	67
Diluted (weighted-average outstanding shares) (in shares)	12,044	11,993	12,032	11,977
Basic earnings per share (in dollars per share)	$ 2.36	$ 3.05	$ 5.05	$ 5.85
Diluted earnings per share (in dollars per share)	$ 2.35	$ 3.03	$ 5.02	$ 5.82