Investment Securities - Held-to-maturity Securities by Maturities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
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	37,701
Debt securities, maturing 5 to 10 years, amortized cost	41,719
Debt securities, maturing over 10 years, amortized cost	328,619
Amortized Cost	408,039	$ 374,415
Debt securities, maturing within 1 year, fair value	0
Debt securities, maturing 1 to 5 years, fair value	36,206
Debt securities, maturing 5 to 10 years, fair value	36,101
Debt securities, maturing over 10 years, fair value	254,150
Debt securities, held-to-maturity, fair value	$ 326,457	369,955
Held-to-maturity securities, maturing within 1 year, weighted average yield	0.00%
Held-to-maturity securities, maturing 1 to 5 years, weighted average yield	2.70%
Held-to-maturity securities, maturing 6 to 10 years, weighted average yield	2.58%
Held-to-maturity securities, maturing over 10 years, weighted average yield	1.97%
Held-to-maturity securities, total weighted average yield	2.10%
U.S. government sponsored agencies
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	19,144
Debt securities, maturing 5 to 10 years, amortized cost	11,172
Debt securities, maturing over 10 years, amortized cost	29,555
Amortized Cost	59,871	36,431
Debt securities, maturing within 1 year, fair value	0
Debt securities, maturing 1 to 5 years, fair value	18,288
Debt securities, maturing 5 to 10 years, fair value	10,622
Debt securities, maturing over 10 years, fair value	21,998
Debt securities, held-to-maturity, fair value	50,908	35,513
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	5,209
Debt securities, maturing 5 to 10 years, amortized cost	9,235
Debt securities, maturing over 10 years, amortized cost	131,046
Amortized Cost	145,490	151,688
Debt securities, maturing within 1 year, fair value	0
Debt securities, maturing 1 to 5 years, fair value	4,812
Debt securities, maturing 5 to 10 years, fair value	7,638
Debt securities, maturing over 10 years, fair value	95,003
Debt securities, held-to-maturity, fair value	107,453	150,138
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	1,176
Debt securities, maturing 5 to 10 years, amortized cost	0
Debt securities, maturing over 10 years, amortized cost	110,531
Amortized Cost	111,707	110,708
Debt securities, maturing within 1 year, fair value	0
Debt securities, maturing 1 to 5 years, fair value	1,152
Debt securities, maturing 5 to 10 years, fair value	0
Debt securities, maturing over 10 years, fair value	92,733
Debt securities, held-to-maturity, fair value	93,885	110,159
Commercial 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	12,172
Debt securities, maturing 5 to 10 years, amortized cost	21,312
Debt securities, maturing over 10 years, amortized cost	57,487
Amortized Cost	90,971	75,588
Debt securities, maturing within 1 year, fair value	0
Debt securities, maturing 1 to 5 years, fair value	11,954
Debt securities, maturing 5 to 10 years, fair value	17,841
Debt securities, maturing over 10 years, fair value	44,416
Debt securities, held-to-maturity, fair value	$ 74,211	$ 74,145