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Comprehensive Income - Reclassifications (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Comprehensive Income
Gain (loss) on sale of available-for-sale securities	$ 0	$ 0	$ (1,536)	$ 650
Income taxes	(1,956)	(699)	(2,421)	(1,379)
Salaries and employee benefits	(15,746)	(16,585)	(32,492)	(32,312)
Interest on investment securities	1,229	838	3,077	1,486
Amount reclassified from AOCI
Comprehensive Income
Realized gain (loss) recognized in income, net of tax	(279)	60	(1,214)	484
Available-for-sale securities | Amount reclassified from AOCI
Comprehensive Income
Gain (loss) on sale of available-for-sale securities	(294)	0	(1,830)	650
Income taxes	71	0	440	(152)
Realized gain (loss) recognized in income, net of tax	(223)	0	(1,390)	498
Defined benefit pension plan items | Amount reclassified from AOCI
Comprehensive Income
Income taxes	7	27	14	52
Realized gain (loss) recognized in income, net of tax	(22)	(80)	(44)	(162)
Salaries and employee benefits	(29)	(107)	(58)	(214)
Investment hedge | Amount reclassified from AOCI
Comprehensive Income
Income taxes	11	(47)	(69)	(49)
Realized gain (loss) recognized in income, net of tax	(34)	140	220	148
Interest on investment securities	$ (45)	$ 187	$ 289	$ 197

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