Earnings Per Share and Capital Stock (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Basic
Net Income		$ 78,396	$ 94,347	$ 86,425
Less: Distributed earnings to common shareholders		56,356	51,689	47,206
Less: Distributed earnings to participating securities		142	134	158
Undistributed earnings		21,898	42,524	39,061
Undistributed earnings allocated to common shareholders		21,843	42,414	38,930
Undistributed earnings allocated to participating securities			110	131
Total income available to common shareholders, basic		$ 78,199	$ 94,103	$ 86,136
Weighted average Common Shares outstanding, basic		36,955,000	36,921,000	36,880,000
Basic earnings per Common Share:
Earnings Per Share, Basic		$ 2.12	$ 2.55	$ 2.34
Diluted
Total income available to common shareholders, basic		$ 78,199	$ 94,103	$ 86,136
Undistributed earnings for dilutive stock options		55	110	131
Total common shareholders earnings, diluted		$ 78,254	$ 94,213	$ 86,267
Weighted average Common Shares outstanding, basic		36,955,000	36,921,000	36,880,000
Stock-based compensation (in shares)	[1]	84,000	89,000	115,000
Weighted average common shares outstanding, diluted		37,039,000	37,010,000	36,995,000
Diluted earnings per Common Share:
Earnings Per Share, Diluted		$ 2.11	$ 2.55	$ 2.33
Restricted Stock Units
Share based compensation arrangement
Restricted stock units outstanding (in shares)		96,988

[1] (1)         In applying the treasury stock method of reflecting the dilutive effect of outstanding stock-based compensation in the calculation of diluted EPS, 96,988 restricted stock units, including performance awards, at December 31, 2022 were deemed to be outstanding in accordance with accounting guidance on earnings per share.