Investment Securities - Available for Sale Securities Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Fair Value
Less Than 12 Months	$ 31,139	$ 183,951
12 Months or Greater	366,095	246,349
Total	397,234	430,300
Gross Unrealized Losses
Less Than 12 Months	(2,346)	(13,575)
12 Months or Greater	(62,009)	(44,251)
Total	(64,355)	(57,826)
U.S. treasury securities
Fair Value
Less Than 12 Months	0	1,377
12 Months or Greater	791	245
Total	791	1,622
Gross Unrealized Losses
Less Than 12 Months	0	(17)
12 Months or Greater	(8)	(5)
Total	(8)	(22)
U.S. agency securities
Fair Value
Less Than 12 Months	0	3,221
12 Months or Greater	4,103	1,364
Total	4,103	4,585
Gross Unrealized Losses
Less Than 12 Months	0	(257)
12 Months or Greater	(510)	(193)
Total	(510)	(450)
Asset backed securities
Fair Value
Less Than 12 Months	5,934	10,780
12 Months or Greater	18,598	19,208
Total	24,532	29,988
Gross Unrealized Losses
Less Than 12 Months	(14)	(319)
12 Months or Greater	(397)	(1,161)
Total	(411)	(1,480)
State, county & municipal securities
Fair Value
Less Than 12 Months	1,457	29,284
12 Months or Greater	100,197	75,472
Total	101,654	104,756
Gross Unrealized Losses
Less Than 12 Months	(276)	(3,629)
12 Months or Greater	(22,952)	(17,734)
Total	(23,228)	(21,363)
Corporate debt securities
Fair Value
Less Than 12 Months	7,660	17,258
12 Months or Greater	39,369	30,651
Total	47,029	47,909
Gross Unrealized Losses
Less Than 12 Months	(1,632)	(1,463)
12 Months or Greater	(6,033)	(3,857)
Total	(7,665)	(5,320)
Mortgage-backed securities
Fair Value
Less Than 12 Months	16,088	122,031
12 Months or Greater	203,037	119,409
Total	219,125	241,440
Gross Unrealized Losses
Less Than 12 Months	(424)	(7,890)
12 Months or Greater	(32,109)	(21,301)
Total	$ (32,533)	$ (29,191)