Investment Securities - Summary of Held-to-maturity Securities by Maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Schedule of Held-to-maturity Securities [Line Items]
Debt securities, maturing within 1 year, amortized cost	$ 11,990
Debt securities, maturing 1 to 5 years, amortized cost	26,887
Debt securities, maturing 5 to 10 years, amortized cost	121,537
Debt securities, maturing over 10 years, amortized cost	519,330
Amortized Cost	679,744	$ 683,895
Debt securities, maturing within 1 year, fair value	11,897
Debt securities, maturing 1 to 5 years, fair value	25,553
Debt securities, maturing 5 to 10 years, fair value	112,859
Debt securities, maturing over 10 years, fair value	451,803
Debt securities, held-to-maturity, fair value	$ 602,112	612,022
Held-to-maturity securities, maturing within 1 year, weighted average yield	3.85%
Held-to-maturity securities, maturing 1 to 5 years, weighted average yield	2.51%
Held-to-maturity securities, maturing 6 to 10 years, weighted average yield	4.00%
Held-to-maturity securities, maturing over 10 years, weighted average yield	3.51%
Held-to-maturity securities, total weighted average yield	3.57%
U.S. government sponsored agencies
Schedule of Held-to-maturity Securities [Line Items]
Debt securities, maturing within 1 year, amortized cost	$ 10,500
Debt securities, maturing 1 to 5 years, amortized cost	10,643
Debt securities, maturing 5 to 10 years, amortized cost	67,056
Debt securities, maturing over 10 years, amortized cost	100,224
Amortized Cost	188,423	188,475
Debt securities, maturing within 1 year, fair value	10,419
Debt securities, maturing 1 to 5 years, fair value	10,144
Debt securities, maturing 5 to 10 years, fair value	66,436
Debt securities, maturing over 10 years, fair value	92,646
Debt securities, held-to-maturity, fair value	179,645	180,825
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	6,422
Debt securities, maturing 5 to 10 years, amortized cost	11,419
Debt securities, maturing over 10 years, amortized cost	126,474
Amortized Cost	144,315	144,496
Debt securities, maturing within 1 year, fair value	0
Debt securities, maturing 1 to 5 years, fair value	6,249
Debt securities, maturing 5 to 10 years, fair value	9,813
Debt securities, maturing over 10 years, fair value	97,013
Debt securities, held-to-maturity, fair value	113,075	114,288
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	451
Debt securities, maturing 5 to 10 years, amortized cost	4,241
Debt securities, maturing over 10 years, amortized cost	241,887
Amortized Cost	246,579	248,559
Debt securities, maturing within 1 year, fair value	0
Debt securities, maturing 1 to 5 years, fair value	441
Debt securities, maturing 5 to 10 years, fair value	3,696
Debt securities, maturing over 10 years, fair value	221,484
Debt securities, held-to-maturity, fair value	225,621	231,620
Commercial mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Debt securities, maturing within 1 year, amortized cost	1,490
Debt securities, maturing 1 to 5 years, amortized cost	9,371
Debt securities, maturing 5 to 10 years, amortized cost	38,821
Debt securities, maturing over 10 years, amortized cost	50,745
Amortized Cost	100,427	102,365
Debt securities, maturing within 1 year, fair value	1,478
Debt securities, maturing 1 to 5 years, fair value	8,719
Debt securities, maturing 5 to 10 years, fair value	32,914
Debt securities, maturing over 10 years, fair value	40,660
Debt securities, held-to-maturity, fair value	$ 83,771	$ 85,289