Investment Securities - Held-to-maturity Securities by Maturities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Schedule of Held-to-maturity Securities [Line Items]
Debt securities, maturing within 1 year, amortized cost	$ 9,546
Debt securities, maturing 1 to 5 years, amortized cost	29,532
Debt securities, maturing 5 to 10 years, amortized cost	123,319
Debt securities, maturing over 10 years, amortized cost	521,498
Amortized cost	683,895	$ 560,453
Debt securities, maturing within 1 year, fair value	9,459
Debt securities, maturing 1 to 5 years, fair value	27,569
Debt securities, maturing 5 to 10 years, fair value	115,162
Debt securities, maturing over 10 years, fair value	459,832
Fair Value	$ 612,022	478,509
Held-to-maturity securities, maturing within 1 year, weighted average yield	3.81%
Held-to-maturity securities, maturing 1 to 5 years, weighted average yield	2.87%
Held-to-maturity securities, maturing 6 to 10 years, weighted average yield	3.98%
Held-to-maturity securities, maturing over 10 years, weighted average yield	3.55%
Held-to-maturity securities, total weighted average yield	3.60%
U.S. government sponsored agencies
Schedule of Held-to-maturity Securities [Line Items]
Debt securities, maturing within 1 year, amortized cost	$ 8,000
Debt securities, maturing 1 to 5 years, amortized cost	13,152
Debt securities, maturing 5 to 10 years, amortized cost	67,043
Debt securities, maturing over 10 years, amortized cost	100,280
Amortized cost	188,475	132,366
Debt securities, maturing within 1 year, fair value	7,931
Debt securities, maturing 1 to 5 years, fair value	12,640
Debt securities, maturing 5 to 10 years, fair value	66,717
Debt securities, maturing over 10 years, fair value	93,537
Fair Value	180,825	123,020
States and political subdivisions
Schedule of Held-to-maturity Securities [Line Items]
Debt securities, maturing within 1 year, amortized cost	0
Debt securities, maturing 1 to 5 years, amortized cost	6,421
Debt securities, maturing 5 to 10 years, amortized cost	11,434
Debt securities, maturing over 10 years, amortized cost	126,641
Amortized cost	144,496	145,263
Debt securities, maturing within 1 year, fair value	0
Debt securities, maturing 1 to 5 years, fair value	6,343
Debt securities, maturing 5 to 10 years, fair value	9,875
Debt securities, maturing over 10 years, fair value	98,070
Fair Value	114,288	108,776
Residential mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Debt securities, maturing within 1 year, amortized cost	0
Debt securities, maturing 1 to 5 years, amortized cost	540
Debt securities, maturing 5 to 10 years, amortized cost	4,347
Debt securities, maturing over 10 years, amortized cost	243,672
Amortized cost	248,559	176,215
Debt securities, maturing within 1 year, fair value	0
Debt securities, maturing 1 to 5 years, fair value	528
Debt securities, maturing 5 to 10 years, fair value	3,818
Debt securities, maturing over 10 years, fair value	227,274
Fair Value	231,620	157,998
Commercial mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Debt securities, maturing within 1 year, amortized cost	1,546
Debt securities, maturing 1 to 5 years, amortized cost	9,419
Debt securities, maturing 5 to 10 years, amortized cost	40,495
Debt securities, maturing over 10 years, amortized cost	50,905
Amortized cost	102,365	106,609
Debt securities, maturing within 1 year, fair value	1,528
Debt securities, maturing 1 to 5 years, fair value	8,058
Debt securities, maturing 5 to 10 years, fair value	34,752
Debt securities, maturing over 10 years, fair value	40,951
Fair Value	$ 85,289	$ 88,715