Securities - HTM in an Unrealized Loss Position (Details) $ in Thousands	Mar. 31, 2025 USD ($) item	Dec. 31, 2024 USD ($) item
Number of Securities
Unrealized loss for less than twelve months | item	9	8
Unrealized loss for twelve months or longer | item	292	293
Total | item	301	301
Fair Value
Unrealized loss for less than twelve months	$ 20,317	$ 4,305
Unrealized loss for twelve months or longer	638,773	642,341
Total	659,090	646,646
Unrealized Losses
Unrealized loss for less than twelve months	90	24
Unrealized loss for twelve months or longer	75,113	88,035
Total	$ 75,203	$ 88,059
Residential mortgage-backed securities
Number of Securities
Unrealized loss for twelve months or longer | item	45	45
Total | item	45	45
Fair Value
Unrealized loss for twelve months or longer	$ 225,394	$ 224,258
Total	225,394	224,258
Unrealized Losses
Unrealized loss for twelve months or longer	25,092	31,621
Total	$ 25,092	$ 31,621
Commercial mortgage-backed securities
Number of Securities
Unrealized loss for twelve months or longer | item	25	26
Total | item	25	26
Fair Value
Unrealized loss for twelve months or longer	$ 133,673	$ 137,009
Total	133,673	137,009
Unrealized Losses
Unrealized loss for twelve months or longer	8,651	10,688
Total	$ 8,651	$ 10,688
Collateralized mortgage obligations
Number of Securities
Unrealized loss for less than twelve months | item	1
Unrealized loss for twelve months or longer | item	53	53
Total | item	54	53
Fair Value
Unrealized loss for less than twelve months	$ 14,943
Unrealized loss for twelve months or longer	218,121	$ 218,961
Total	233,064	218,961
Unrealized Losses
Unrealized loss for less than twelve months	12
Unrealized loss for twelve months or longer	33,384	38,269
Total	$ 33,396	$ 38,269
States and political subdivisions
Number of Securities
Unrealized loss for less than twelve months | item	8	8
Unrealized loss for twelve months or longer | item	169	169
Total | item	177	177
Fair Value
Unrealized loss for less than twelve months	$ 5,374	$ 4,305
Unrealized loss for twelve months or longer	61,585	62,113
Total	66,959	66,418
Unrealized Losses
Unrealized loss for less than twelve months	78	24
Unrealized loss for twelve months or longer	7,986	7,457
Total	$ 8,064	$ 7,481