Earnings per Share - Basic and Diluted Earnings Per Share (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
Earnings Per Share [Abstract]
Net income	$ 17,016	$ 20,801	$ 54,850	$ 54,284
Denominator for basic earnings per share - weighted average shares outstanding	29,479	29,291	29,411	29,440
Effect of dilutive securities—stock options and restricted stock units	79	141	95	148
Denominator for diluted earnings per share—adjusted weighted-average shares outstanding	29,558	29,432	29,506	29,588
Basic (in dollars per share)	$ 0.58	$ 0.71	$ 1.86	$ 1.85
Diluted earnings per share	$ 0.58	$ 0.71	$ 1.86	$ 1.84
Average antidilutive options and restricted stock units excluded from computation of diluted earnings per share	540	250	432	250