Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Numerator:
Net income	$ 116,629	$ 108,133	$ 49,990
Denominator:
Weighted average shares outstanding - basic (in shares)	18,784,000	18,731,000	18,681,000
Effect of dilutive shares (in shares)	169,000	132,000	25,000
Weighted average shares outstanding - diluted (in shares)	18,953,000	18,863,000	18,706,000
Basic earnings per share (in dollars per share)	$ 6.21	$ 5.77	$ 2.68
Diluted earnings per share (in dollars per share)	$ 6.15	$ 5.73	$ 2.67
Anti-dilutive shares excluded (in shares)	18,444	721	8,454