Securities - Fair Value and Age of Gross Unrealized Losses of Debt Securities (Details) $ in Thousands	Mar. 31, 2026 USD ($) security	Dec. 31, 2025 USD ($) security
Number of Securities
Less Than 12 Months | security	25	5
12 Months or More | security	80	87
Total | security	105	92
Fair Value
Less Than 12 Months	$ 215,576	$ 44,936
12 Months or More	464,925	514,419
Total	680,501	559,355
Unrealized Losses
Less Than 12 Months	(2,251)	(81)
12 Months or More	(44,051)	(42,300)
Total	$ (46,302)	$ (42,381)
U.S. Treasury securities
Number of Securities
Less Than 12 Months | security	0	0
12 Months or More | security	7	7
Total | security	7	7
Fair Value
Less Than 12 Months	$ 0	$ 0
12 Months or More	69,192	69,409
Total	69,192	69,409
Unrealized Losses
Less Than 12 Months	0	0
12 Months or More	(2,056)	(1,984)
Total	$ (2,056)	$ (1,984)
Collateralized mortgage obligations of U.S. government corporations and agencies
Number of Securities
Less Than 12 Months | security	18	4
12 Months or More | security	53	55
Total | security	71	59
Fair Value
Less Than 12 Months	$ 153,665	$ 34,993
12 Months or More	271,532	299,732
Total	425,197	334,725
Unrealized Losses
Less Than 12 Months	(1,564)	(52)
12 Months or More	(32,719)	(30,960)
Total	$ (34,283)	$ (31,012)
Residential mortgage-backed securities of U.S. government corporations and agencies
Number of Securities
Less Than 12 Months | security	1	0
12 Months or More | security	12	15
Total | security	13	15
Fair Value
Less Than 12 Months	$ 2,502	$ 0
12 Months or More	30,433	31,171
Total	32,935	31,171
Unrealized Losses
Less Than 12 Months	(24)	0
12 Months or More	(4,578)	(4,665)
Total	$ (4,602)	$ (4,665)
Commercial mortgage-backed securities of U.S. government corporations
Number of Securities
Less Than 12 Months | security	6	1
12 Months or More | security	8	10
Total | security	14	11
Fair Value
Less Than 12 Months	$ 59,409	$ 9,943
12 Months or More	93,768	114,107
Total	153,177	124,050
Unrealized Losses
Less Than 12 Months	(663)	(29)
12 Months or More	(4,698)	(4,691)
Total	$ (5,361)	$ (4,720)