Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Reconciliation of the component parts of earnings per share [Abstract]
Net income	$ 16,372	$ 17,746	$ 17,871	$ 17,089	$ 34,118	$ 34,960
Weighted average common shares (in shares)	19,024		19,153		19,024	19,185
Stock Options (in shares)	0		0		1	0
Weighted average common shares including potential dilutive shares (in shares)	19,024		19,153		19,025	19,185
Basic EPS (in dollars per share)	$ 0.86		$ 0.93		$ 1.79	$ 1.82
Diluted EPS (in dollars per share)	$ 0.86		$ 0.93		$ 1.79	$ 1.82
Stock Options [Member]
Antidilutive Securities [Abstract]
Number of anti-dilutive stock options excluded from diluted earnings per share (in shares)	77		89		52	60