Securities - Unrealized Losses (Details) $ in Thousands	Jun. 30, 2023 USD ($) Securities	Dec. 31, 2022 USD ($) Securities
Less than 12 Months
Fair Value	$ 228,603	$ 462,659
Unrealized Losses	$ 3,738	$ 48,392
Number of Securities \| Securities	140	330
12 Months or More
Fair Value	$ 419,667	$ 118,806
Unrealized Losses	$ 75,224	$ 35,509
Number of Securities \| Securities	259	57
Total
Fair Value	$ 648,270	$ 581,465
Unrealized Losses	$ 78,962	$ 83,901
Number of Securities \| Securities	399	387
Mortgage-backed - GSE residential
Less than 12 Months
Fair Value	$ 100,527	$ 91,929
Unrealized Losses	$ 1,751	$ 10,410
Number of Securities \| Securities	28	41
12 Months or More
Fair Value	$ 131,007	$ 66,036
Unrealized Losses	$ 23,473	$ 14,756
Number of Securities \| Securities	41	16
Total
Fair Value	$ 231,534	$ 157,965
Unrealized Losses	$ 25,224	$ 25,166
Number of Securities \| Securities	69	57
Collateralized mortgage obligations - GSE residential
Less than 12 Months
Fair Value	$ 0	$ 10,636
Unrealized Losses	$ 0	$ 733
Number of Securities \| Securities	0	18
12 Months or More
Fair Value	$ 9,515	$ 251
Unrealized Losses	$ 740	$ 10
Number of Securities \| Securities	19	1
Total
Fair Value	$ 9,515	$ 10,887
Unrealized Losses	$ 740	$ 743
Number of Securities \| Securities	19	19
State and political subdivisions
Less than 12 Months
Fair Value	$ 123,696	$ 350,884
Unrealized Losses	$ 1,366	$ 36,697
Number of Securities \| Securities	111	266
12 Months or More
Fair Value	$ 275,023	$ 52,519
Unrealized Losses	$ 50,385	$ 20,743
Number of Securities \| Securities	195	40
Total
Fair Value	$ 398,719	$ 403,403
Unrealized Losses	$ 51,751	$ 57,440
Number of Securities \| Securities	306	306
Corporate bonds
Less than 12 Months
Fair Value	$ 4,380	$ 9,210
Unrealized Losses	$ 621	$ 552
Number of Securities \| Securities	1	5
12 Months or More
Fair Value	$ 4,122	$ 0
Unrealized Losses	$ 626	$ 0
Number of Securities \| Securities	4	0
Total
Fair Value	$ 8,502	$ 9,210
Unrealized Losses	$ 1,247	$ 552
Number of Securities \| Securities	5	5

Available For Sale Securities, Less Than Twelve Months [Abstract]

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Available For Sale Securities, Twelve Months Or Longer [Abstract]

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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