Investment Securities - Schedule of Fair Value and Unrealized Loss on Debt Security Investments in a Continuous Unrealized Loss Position (Details)	Sep. 30, 2023 USD ($) security	Dec. 31, 2022 USD ($) security
Debt Securities, Available-for-Sale [Line Items]
Available-for-sale securities, Less than 12 Months: Number of Securities | security	1	106
Available-for-sale securities, Less than 12 Months: Fair Value	$ 1,455,000	$ 194,377,000
Available-for-sale securities, Less than 12 Months: Unrealized Losses	$ 122,000	$ 16,314,000
Available-for-sale securities, 12 Months or More: Number of Securities | security	137	30
Available-for-sale securities, 12 Months or More: Fair Value	$ 216,609,000	$ 40,250,000
Available-for-sale securities, 12 Months or More: Unrealized Losses	$ 31,550,000	$ 8,150,000
Available-for-sale securities, Total: Number of Securities | security	138	136
Available-for-sale securities, Total: Fair Value	$ 218,064,000	$ 234,627,000
Available-for-sale securities, Total: Unrealized Losses	$ 31,672,000	$ 24,464,000
Schedule of Held-to-Maturity Securities [Line Items]
Held-to-maturity securities, Less than 12 Months: Number of Securities | security	11	283
Held-to-maturity securities, Less than 12 Months: Fair Value	$ 8,166,000	$ 178,268,000
Held-to-maturity securities, Less than 12 Months: Unrealized Losses	$ 1,382,000	$ 18,894,000
Held-to-maturity securities, 12 Months or More: Number of Securities | security	412	138
Held-to-maturity securities, 12 Months or More: Fair Value	$ 332,840,000	$ 165,857,000
Held-to-maturity securities, 12 Months or More: Unrealized Losses	$ 59,173,000	$ 32,095,000
Held-to-maturity securities, Total: Number of Securities | security	423	421
Held-to-maturity securities, Total: Fair Value	$ 341,006,000	$ 344,125,000
Held-to-maturity securities, Total: Unrealized Losses	$ 60,555,000	$ 50,989,000
Available-for-sale securities and Held-to-maturity securities, Less than 12 Months: Number of Securities | security	12	389
Available-for-sale securities and Held-to-maturity securities, Less than 12 Months: Fair Value	$ 9,621,000	$ 372,645,000
Available-for-sale securities and Held-to-maturity securities, Less than 12 Months: Unrealized Losses	$ 1,504,000	$ 35,208,000
Available-for-sale securities and Held-to-maturity securities,, 12 Months or More: Number of Securities | security	549	168
Available-for-sale securities and Held-to-maturity securities, 12 Months or More: Fair Value	$ 549,449,000	$ 206,107,000
Available-for-sale securities and Held-to-maturity securities, 12 Months or More: Unrealized Losses	$ 90,723,000	$ 40,245,000
Available-for-sale securities and Held-to-maturity securities, Total: Number of Securities | security	561	557
Available-for-sale securities and Held-to-maturity securities, Total: Fair Value	$ 559,070,000	$ 578,752,000
Available-for-sale securities and Held-to-maturity securities, Total: Unrealized Losses	$ 92,227,000	$ 75,453,000
U.S. Treasury and U.S. government agencies
Debt Securities, Available-for-Sale [Line Items]
Available-for-sale securities, Less than 12 Months: Number of Securities | security	0	19
Available-for-sale securities, Less than 12 Months: Fair Value	$ 0	$ 34,914,000
Available-for-sale securities, Less than 12 Months: Unrealized Losses	$ 0	$ 1,614,000
Available-for-sale securities, 12 Months or More: Number of Securities | security	19	0
Available-for-sale securities, 12 Months or More: Fair Value	$ 34,731,000	$ 0
Available-for-sale securities, 12 Months or More: Unrealized Losses	$ 1,878,000	$ 0
Available-for-sale securities, Total: Number of Securities | security	19	19
Available-for-sale securities, Total: Fair Value	$ 34,731,000	$ 34,914,000
Available-for-sale securities, Total: Unrealized Losses	$ 1,878,000	$ 1,614,000
Schedule of Held-to-Maturity Securities [Line Items]
Held-to-maturity securities, Less than 12 Months: Number of Securities | security	4	54
Held-to-maturity securities, Less than 12 Months: Fair Value	$ 5,627,000	$ 84,946,000
Held-to-maturity securities, Less than 12 Months: Unrealized Losses	$ 858,000	$ 10,093,000
Held-to-maturity securities, 12 Months or More: Number of Securities | security	141	91
Held-to-maturity securities, 12 Months or More: Fair Value	$ 199,781,000	$ 125,891,000
Held-to-maturity securities, 12 Months or More: Unrealized Losses	$ 39,505,000	$ 24,741,000
Held-to-maturity securities, Total: Number of Securities | security	145	145
Held-to-maturity securities, Total: Fair Value	$ 205,408,000	$ 210,837,000
Held-to-maturity securities, Total: Unrealized Losses	$ 40,363,000	$ 34,834,000
Mortgage-backed U.S. government agencies
Debt Securities, Available-for-Sale [Line Items]
Available-for-sale securities, Less than 12 Months: Number of Securities | security	1	69
Available-for-sale securities, Less than 12 Months: Fair Value	$ 1,455,000	$ 131,879,000
Available-for-sale securities, Less than 12 Months: Unrealized Losses	$ 122,000	$ 11,876,000
Available-for-sale securities, 12 Months or More: Number of Securities | security	92	24
Available-for-sale securities, 12 Months or More: Fair Value	$ 147,189,000	$ 35,036,000
Available-for-sale securities, 12 Months or More: Unrealized Losses	$ 24,294,000	$ 7,202,000
Available-for-sale securities, Total: Number of Securities | security	93	93
Available-for-sale securities, Total: Fair Value	$ 148,644,000	$ 166,915,000
Available-for-sale securities, Total: Unrealized Losses	$ 24,416,000	$ 19,078,000
Schedule of Held-to-Maturity Securities [Line Items]
Held-to-maturity securities, Less than 12 Months: Number of Securities | security	2	40
Held-to-maturity securities, Less than 12 Months: Fair Value	$ 971,000	$ 13,866,000
Held-to-maturity securities, Less than 12 Months: Unrealized Losses	$ 61,000	$ 1,071,000
Held-to-maturity securities, 12 Months or More: Number of Securities | security	62	24
Held-to-maturity securities, 12 Months or More: Fair Value	$ 36,789,000	$ 30,168,000
Held-to-maturity securities, 12 Months or More: Unrealized Losses	$ 7,553,000	$ 5,605,000
Held-to-maturity securities, Total: Number of Securities | security	64	64
Held-to-maturity securities, Total: Fair Value	$ 37,760,000	$ 44,034,000
Held-to-maturity securities, Total: Unrealized Losses	$ 7,614,000	$ 6,676,000
State and political subdivision obligations
Debt Securities, Available-for-Sale [Line Items]
Available-for-sale securities, Less than 12 Months: Number of Securities | security	0	6
Available-for-sale securities, Less than 12 Months: Fair Value	$ 0	$ 2,521,000
Available-for-sale securities, Less than 12 Months: Unrealized Losses	$ 0	$ 671,000
Available-for-sale securities, 12 Months or More: Number of Securities | security	8	2
Available-for-sale securities, 12 Months or More: Fair Value	$ 3,312,000	$ 1,018,000
Available-for-sale securities, 12 Months or More: Unrealized Losses	$ 1,026,000	$ 144,000
Available-for-sale securities, Total: Number of Securities | security	8	8
Available-for-sale securities, Total: Fair Value	$ 3,312,000	$ 3,539,000
Available-for-sale securities, Total: Unrealized Losses	$ 1,026,000	$ 815,000
Schedule of Held-to-Maturity Securities [Line Items]
Held-to-maturity securities, Less than 12 Months: Number of Securities | security	5	185
Held-to-maturity securities, Less than 12 Months: Fair Value	$ 1,568,000	$ 73,735,000
Held-to-maturity securities, Less than 12 Months: Unrealized Losses	$ 463,000	$ 7,413,000
Held-to-maturity securities, 12 Months or More: Number of Securities | security	194	18
Held-to-maturity securities, 12 Months or More: Fair Value	$ 72,044,000	$ 4,616,000
Held-to-maturity securities, 12 Months or More: Unrealized Losses	$ 10,867,000	$ 932,000
Held-to-maturity securities, Total: Number of Securities | security	199	203
Held-to-maturity securities, Total: Fair Value	$ 73,612,000	$ 78,351,000
Held-to-maturity securities, Total: Unrealized Losses	$ 11,330,000	$ 8,345,000
Corporate debt securities
Debt Securities, Available-for-Sale [Line Items]
Available-for-sale securities, Less than 12 Months: Number of Securities | security	0	12
Available-for-sale securities, Less than 12 Months: Fair Value	$ 0	$ 25,063,000
Available-for-sale securities, Less than 12 Months: Unrealized Losses	$ 0	$ 2,153,000
Available-for-sale securities, 12 Months or More: Number of Securities | security	18	4
Available-for-sale securities, 12 Months or More: Fair Value	$ 31,377,000	$ 4,196,000
Available-for-sale securities, 12 Months or More: Unrealized Losses	$ 4,352,000	$ 804,000
Available-for-sale securities, Total: Number of Securities | security	18	16
Available-for-sale securities, Total: Fair Value	$ 31,377,000	$ 29,259,000
Available-for-sale securities, Total: Unrealized Losses	$ 4,352,000	$ 2,957,000
Schedule of Held-to-Maturity Securities [Line Items]
Held-to-maturity securities, Less than 12 Months: Number of Securities | security	0	4
Held-to-maturity securities, Less than 12 Months: Fair Value	$ 0	$ 5,721,000
Held-to-maturity securities, Less than 12 Months: Unrealized Losses	$ 0	$ 317,000
Held-to-maturity securities, 12 Months or More: Number of Securities | security	15	5
Held-to-maturity securities, 12 Months or More: Fair Value	$ 24,226,000	$ 5,182,000
Held-to-maturity securities, 12 Months or More: Unrealized Losses	$ 1,248,000	$ 817,000
Held-to-maturity securities, Total: Number of Securities | security	15	9
Held-to-maturity securities, Total: Fair Value	$ 24,226,000	$ 10,903,000
Held-to-maturity securities, Total: Unrealized Losses	$ 1,248,000	$ 1,134,000