Securities - Gross Unrealized Losses and Fair Value by Investment Category (Details) $ in Thousands	Dec. 31, 2024 USD ($) security	Dec. 31, 2023 USD ($) security
Available for Sale:
Number of positions, Less than 12 Months | security	16	6
Fair Value, Less than 12 Months	$ 95,216	$ 6,819
Unrealized Losses, Less than 12 Months	$ (1,120)	$ (222)
Number of positions, 12 Months or More | security	122	127
Fair Value, 12 Months or More	$ 606,628	$ 685,774
Unrealized Losses, 12 Months or More	$ (137,488)	$ (139,572)
Number of positions | security	138	133
Fair Value	$ 701,844	$ 692,593
Unrealized Losses	$ (138,608)	$ (139,794)
Held to Maturity:
Number of positions, Less than 12 Months | security	0	2
Fair Value, Less than 12 Months	$ 0	$ 2,807
Unrealized Losses, Less than 12 Months	$ 0	$ (25)
Number of positions, 12 Months or More | security	235	234
Fair Value, 12 Months or More	$ 1,000,874	$ 1,117,285
Unrealized Losses, 12 Months or More	$ (123,603)	$ (99,715)
Number of positions | security	235	236
Fair Value	$ 1,000,874	$ 1,120,092
Unrealized Losses	$ (123,603)	$ (99,740)
Obligations of states and political subdivisions
Available for Sale:
Number of positions, Less than 12 Months | security	0	3
Fair Value, Less than 12 Months	$ 0	$ 2,914
Unrealized Losses, Less than 12 Months	$ 0	$ (2)
Number of positions, 12 Months or More | security	7	9
Fair Value, 12 Months or More	$ 12,841	$ 15,198
Unrealized Losses, 12 Months or More	$ (2,269)	$ (1,881)
Number of positions | security	7	12
Fair Value	$ 12,841	$ 18,112
Unrealized Losses	$ (2,269)	$ (1,883)
Held to Maturity:
Number of positions, Less than 12 Months | security	0	2
Fair Value, Less than 12 Months	$ 0	$ 2,807
Unrealized Losses, Less than 12 Months	$ 0	$ (25)
Number of positions, 12 Months or More | security	128	126
Fair Value, 12 Months or More	$ 240,394	$ 249,995
Unrealized Losses, 12 Months or More	$ (42,491)	$ (33,663)
Number of positions | security	128	128
Fair Value	$ 240,394	$ 252,802
Unrealized Losses	$ (42,491)	$ (33,688)
Other debt securities
Available for Sale:
Number of positions, Less than 12 Months | security	2	2
Fair Value, Less than 12 Months	$ 22,357	$ 3,099
Unrealized Losses, Less than 12 Months	$ (218)	$ (195)
Number of positions, 12 Months or More | security	17	19
Fair Value, 12 Months or More	$ 30,801	$ 35,072
Unrealized Losses, 12 Months or More	$ (2,437)	$ (4,263)
Number of positions | security	19	21
Fair Value	$ 53,158	$ 38,171
Unrealized Losses	$ (2,655)	$ (4,458)
Held to Maturity:
Number of positions, Less than 12 Months | security	0	0
Fair Value, Less than 12 Months	$ 0	$ 0
Unrealized Losses, Less than 12 Months	$ 0	$ 0
Number of positions, 12 Months or More | security	10	10
Fair Value, 12 Months or More	$ 49,603	$ 54,254
Unrealized Losses, 12 Months or More	$ (4,080)	$ (4,119)
Number of positions | security	10	10
Fair Value	$ 49,603	$ 54,254
Unrealized Losses	$ (4,080)	$ (4,119)
Government agency mortgage-backed securities | Residential mortgage-backed securities
Available for Sale:
Number of positions, Less than 12 Months | security	7	1
Fair Value, Less than 12 Months	$ 11,051	$ 806
Unrealized Losses, Less than 12 Months	$ (259)	$ (25)
Number of positions, 12 Months or More | security	34	35
Fair Value, 12 Months or More	$ 141,321	$ 166,963
Unrealized Losses, 12 Months or More	$ (24,208)	$ (24,943)
Number of positions | security	41	36
Fair Value	$ 152,372	$ 167,769
Unrealized Losses	$ (24,467)	$ (24,968)
Held to Maturity:
Number of positions, Less than 12 Months | security	0	0
Fair Value, Less than 12 Months	$ 0	$ 0
Unrealized Losses, Less than 12 Months	$ 0	$ 0
Number of positions, 12 Months or More | security	69	70
Fair Value, 12 Months or More	$ 347,154	$ 405,950
Unrealized Losses, 12 Months or More	$ (25,251)	$ (20,314)
Number of positions | security	69	70
Fair Value	$ 347,154	$ 405,950
Unrealized Losses	$ (25,251)	$ (20,314)
Government agency mortgage-backed securities | Commercial mortgage-backed securities
Available for Sale:
Number of positions, Less than 12 Months | security	2	0
Fair Value, Less than 12 Months	$ 5,248	$ 0
Unrealized Losses, Less than 12 Months	$ (122)	$ 0
Number of positions, 12 Months or More | security	2	2
Fair Value, 12 Months or More	$ 5,375	$ 5,392
Unrealized Losses, 12 Months or More	$ (629)	$ (637)
Number of positions | security	4	2
Fair Value	$ 10,623	$ 5,392
Unrealized Losses	$ (751)	$ (637)
Held to Maturity:
Number of positions, Less than 12 Months | security	0	0
Fair Value, Less than 12 Months	$ 0	$ 0
Unrealized Losses, Less than 12 Months	$ 0	$ 0
Number of positions, 12 Months or More | security	1	1
Fair Value, 12 Months or More	$ 14,002	$ 14,011
Unrealized Losses, 12 Months or More	$ (2,958)	$ (2,972)
Number of positions | security	1	1
Fair Value	$ 14,002	$ 14,011
Unrealized Losses	$ (2,958)	$ (2,972)
Government agency collateralized mortgage obligations | Residential mortgage-backed securities
Available for Sale:
Number of positions, Less than 12 Months | security	3	0
Fair Value, Less than 12 Months	$ 48,879	$ 0
Unrealized Losses, Less than 12 Months	$ (482)	$ 0
Number of positions, 12 Months or More | security	37	37
Fair Value, 12 Months or More	$ 311,964	$ 354,574
Unrealized Losses, 12 Months or More	$ (86,389)	$ (85,883)
Number of positions | security	40	37
Fair Value	$ 360,843	$ 354,574
Unrealized Losses	$ (86,871)	$ (85,883)
Held to Maturity:
Number of positions, Less than 12 Months | security	0	0
Fair Value, Less than 12 Months	$ 0	$ 0
Unrealized Losses, Less than 12 Months	$ 0	$ 0
Number of positions, 12 Months or More | security	18	18
Fair Value, 12 Months or More	$ 313,376	$ 355,538
Unrealized Losses, 12 Months or More	$ (41,506)	$ (31,670)
Number of positions | security	18	18
Fair Value	$ 313,376	$ 355,538
Unrealized Losses	$ (41,506)	$ (31,670)
Government agency collateralized mortgage obligations | Commercial mortgage-backed securities
Available for Sale:
Number of positions, Less than 12 Months | security	2	0
Fair Value, Less than 12 Months	$ 7,681	$ 0
Unrealized Losses, Less than 12 Months	$ (39)	$ 0
Number of positions, 12 Months or More | security	25	25
Fair Value, 12 Months or More	$ 104,326	$ 108,575
Unrealized Losses, 12 Months or More	$ (21,556)	$ (21,965)
Number of positions | security	27	25
Fair Value	$ 112,007	$ 108,575
Unrealized Losses	$ (21,595)	$ (21,965)
Held to Maturity:
Number of positions, Less than 12 Months | security	0	0
Fair Value, Less than 12 Months	$ 0	$ 0
Unrealized Losses, Less than 12 Months	$ 0	$ 0
Number of positions, 12 Months or More | security	9	9
Fair Value, 12 Months or More	$ 36,345	$ 37,537
Unrealized Losses, 12 Months or More	$ (7,317)	$ (6,977)
Number of positions | security	9	9
Fair Value	$ 36,345	$ 37,537
Unrealized Losses	$ (7,317)	$ (6,977)