Earnings Per Share - Summary of weighted average number of shares outstanding (Details) - 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
Numerator:
Net income	$ 21,512	$ 18,436	$ 66,948	$ 58,808
Denominator:
Weighted average common shares outstanding (in shares)	16,710	16,659	16,678	16,822
Weighted average dilutive securities (in shares)	119	194	143	222
Weighted average common shares outstanding, diluted (in shares)	16,829	16,853	16,821	17,044
Basic (in dollars per share)	$ 1.29	$ 1.11	$ 4.01	$ 3.50
Diluted (in dollars per share)	$ 1.28	$ 1.09	$ 3.98	$ 3.45