Securities - Securities Gross (Details) $ in Thousands	Mar. 31, 2025 USD ($) segment	Dec. 31, 2024 USD ($)	Mar. 31, 2024 USD ($)
Less Than 12 Months
Fair Value	$ 116,292	$ 153,622
Unrealized Losses	(1,627)	(2,354)
More Than 12 Months
Fair Value	986,214	983,703
Unrealized Losses	(152,938)	(166,580)
Total
Fair Value	1,102,506	1,137,325
Unrealized Losses	$ (154,565)	(168,934)	$ (154,600)
Number of investment securities segregation for impairment evaluation | segment	2
U.S. Government agencies
Less Than 12 Months
Fair Value	$ 3,238	3,696
Unrealized Losses	(73)	(107)
More Than 12 Months
Fair Value	73,657	74,636
Unrealized Losses	(10,111)	(11,563)
Total
Fair Value	76,895	78,332
Unrealized Losses	(10,184)	(11,670)
Mortgage Backed Securities - residential
Less Than 12 Months
Fair Value	34,339	51,996
Unrealized Losses	(574)	(1,113)
More Than 12 Months
Fair Value	476,849	481,270
Unrealized Losses	(78,337)	(88,138)
Total
Fair Value	511,188	533,266
Unrealized Losses	(78,911)	(89,251)
Mortgage Backed Securities - commercial
Less Than 12 Months
Fair Value	6,979	6,937
Unrealized Losses	(125)	(161)
More Than 12 Months
Fair Value	5,439	5,388
Unrealized Losses	(290)	(362)
Total
Fair Value	12,418	12,325
Unrealized Losses	(415)	(523)
Collateralized Mortgage Obligations
Less Than 12 Months
Fair Value		85
More Than 12 Months
Fair Value	154,849	158,244
Unrealized Losses	(25,651)	(27,555)
Total
Fair Value	154,849	158,329
Unrealized Losses	(25,651)	(27,555)
State and municipal obligations
Less Than 12 Months
Fair Value	70,922	89,321
Unrealized Losses	(854)	(953)
More Than 12 Months
Fair Value	242,937	232,247
Unrealized Losses	(33,742)	(33,586)
Total
Fair Value	313,859	321,568
Unrealized Losses	(34,596)	(34,539)
Municipal taxable
Less Than 12 Months
Fair Value	814	1,587
Unrealized Losses	(1)	(20)
More Than 12 Months
Fair Value	32,483	31,918
Unrealized Losses	(4,807)	(5,376)
Total
Fair Value	33,297	33,505
Unrealized Losses	$ (4,808)	$ (5,396)