Investment Securities - Schedule of Unrealized Loss on Investments (Details) $ in Thousands	Sep. 30, 2023 USD ($) security	Dec. 31, 2022 USD ($) security
Less Than 12 Months
Number of Securities \| security	25	84
Fair Value	$ 34,912	$ 52,482
Gross Unrealized Losses	$ (3,959)	$ (4,695)
12 Months and over
Number of Securities \| security	201	123
Fair Value	$ 212,311	$ 185,418
Gross Unrealized Losses	$ (56,378)	$ (43,056)
Total
Number of Securities \| security	226	207
Fair Value	$ 247,223	$ 237,900
Gross Unrealized Losses	$ (60,337)	$ (47,751)
U.S. Government-sponsored enterprises
Less Than 12 Months
Number of Securities \| security	1	4
Fair Value	$ 2,889	$ 8,000
Gross Unrealized Losses	$ (2)	$ (533)
12 Months and over
Number of Securities \| security	33	31
Fair Value	$ 34,942	$ 31,103
Gross Unrealized Losses	$ (6,381)	$ (5,312)
Total
Number of Securities \| security	34	35
Fair Value	$ 37,831	$ 39,103
Gross Unrealized Losses	$ (6,383)	$ (5,845)
Agency mortgage-backed
Less Than 12 Months
Number of Securities \| security	2	31
Fair Value	$ 5,091	$ 24,306
Gross Unrealized Losses	$ (120)	$ (2,192)
12 Months and over
Number of Securities \| security	93	62
Fair Value	$ 141,042	$ 134,297
Gross Unrealized Losses	$ (40,029)	$ (31,958)
Total
Number of Securities \| security	95	93
Fair Value	$ 146,133	$ 158,603
Gross Unrealized Losses	$ (40,149)	$ (34,150)
State and political subdivisions
Less Than 12 Months
Number of Securities \| security	22	39
Fair Value	$ 26,932	$ 15,457
Gross Unrealized Losses	$ (3,837)	$ (1,846)
12 Months and over
Number of Securities \| security	62	27
Fair Value	$ 30,220	$ 18,613
Gross Unrealized Losses	$ (9,721)	$ (5,691)
Total
Number of Securities \| security	84	66
Fair Value	$ 57,152	$ 34,070
Gross Unrealized Losses	$ (13,558)	$ (7,537)
Corporate
Less Than 12 Months
Number of Securities \| security	0	10
Fair Value	$ 0	$ 4,719
Gross Unrealized Losses	$ 0	$ (124)
12 Months and over
Number of Securities \| security	13	3
Fair Value	$ 6,107	$ 1,405
Gross Unrealized Losses	$ (247)	$ (95)
Total
Number of Securities \| security	13	13
Fair Value	$ 6,107	$ 6,124
Gross Unrealized Losses	$ (247)	$ (219)

Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position

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Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Greater Than 12 Months

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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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