Investment Securities - Schedule of Unrealized Loss Positions (Details) $ in Thousands	Sep. 30, 2025 USD ($) loan	Dec. 31, 2024 USD ($) loan
Investments in an Unrealized Loss Position
Less than 12 months, fair value	$ 44,453	$ 117,488
Less than 12 months, unrealized loss	(812)	(3,990)
12 months or more, fair value	131,993	267,683
12 months or more, unrealized loss	$ (18,960)	$ (30,150)
United States government agency securities
Description and Number of Positions
Number of investments in an unrealized loss position \| loan	17	28
Investments in an Unrealized Loss Position
Less than 12 months, fair value	$ 370	$ 5,956
Less than 12 months, unrealized loss	(2)	(264)
12 months or more, fair value	18,698	32,854
12 months or more, unrealized loss	$ (2,543)	$ (5,349)
United States sponsored mortgage-backed securities
Description and Number of Positions
Number of investments in an unrealized loss position \| loan	49	75
Investments in an Unrealized Loss Position
Less than 12 months, fair value	$ 25,096	$ 92,929
Less than 12 months, unrealized loss	(482)	(2,291)
12 months or more, fair value	47,684	44,444
12 months or more, unrealized loss	$ (8,778)	$ (11,291)
United States treasury securities
Description and Number of Positions
Number of investments in an unrealized loss position \| loan	4	23
Investments in an Unrealized Loss Position
Less than 12 months, fair value	$ 0	$ 0
Less than 12 months, unrealized loss	0	0
12 months or more, fair value	19,835	103,975
12 months or more, unrealized loss	$ (148)	$ (2,120)
Municipal securities
Description and Number of Positions
Number of investments in an unrealized loss position \| loan	125	201
Investments in an Unrealized Loss Position
Less than 12 months, fair value	$ 8,961	$ 17,613
Less than 12 months, unrealized loss	(291)	(1,425)
12 months or more, fair value	43,790	83,592
12 months or more, unrealized loss	$ (7,477)	$ (11,308)
Corporate debt securities
Description and Number of Positions
Number of investments in an unrealized loss position \| loan	4	6
Investments in an Unrealized Loss Position
Less than 12 months, fair value	$ 10,026	$ 990
Less than 12 months, unrealized loss	(37)	(10)
12 months or more, fair value	1,986	2,818
12 months or more, unrealized loss	$ (14)	$ (82)

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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