Computation of Basic and Diluted Earnings per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Numerators:
Consolidated net income	$ 74,051	$ 50,331	$ 44,521
Denominators:
Weighted average common shares outstanding—basic	35,652	35,396	35,144
Dilutive potential common shares	257	385	510
Weighted average common shares outstanding— diluted	35,909	35,781	35,654
Antidilutive potential common shares excluded from above	91	13	13
Earning Per Share Basic and Diluted [Abstract]
Basic	$ 2.08	$ 1.42	$ 1.27
Diluted	$ 2.06	$ 1.41	$ 1.25