Investment Securities - Gross Unrealized Losses and Fair Value by Investment Category (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Total debt securities
Investment securities
Fair value, less than twelve months	$ 140,293	$ 57,396
Gross unrealized losses, less than twelve months	(8,432)	(704)
Fair value, twelve months or greater	45,146	9,216
Gross unrealized losses, twelve months or greater	(5,672)	(316)
Fair value, total	185,439	66,612
Gross unrealized losses, total	(14,104)	(1,020)
U.S. Government and agency securities
Investment securities
Fair value, less than twelve months	2,902
Gross unrealized losses, less than twelve months	(101)
Fair value, twelve months or greater	0
Gross unrealized losses, twelve months or greater	0
Fair value, total	2,902
Gross unrealized losses, total	(101)
Mortgage-backed securities
Investment securities
Fair value, less than twelve months	1,282	1,747
Gross unrealized losses, less than twelve months	(226)	(5)
Fair value, twelve months or greater	0	0
Gross unrealized losses, twelve months or greater	0	0
Fair value, total	1,282	1,747
Gross unrealized losses, total	(226)	(5)
State and political securities
Investment securities
Fair value, less than twelve months	110,153	34,203
Gross unrealized losses, less than twelve months	(6,288)	(398)
Fair value, twelve months or greater	29,874	7,408
Gross unrealized losses, twelve months or greater	(3,713)	(296)
Fair value, total	140,027	41,611
Gross unrealized losses, total	(10,001)	(694)
Other debt securities
Investment securities
Fair value, less than twelve months	25,956	21,446
Gross unrealized losses, less than twelve months	(1,817)	(301)
Fair value, twelve months or greater	15,272	1,808
Gross unrealized losses, twelve months or greater	(1,959)	(20)
Fair value, total	41,228	23,254
Gross unrealized losses, total	$ (3,776)	$ (321)