Securities - Amortized cost and fair value (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Amortized cost and fair value of investments classified as available for sale
Amortized Cost	$ 1,290,156	$ 1,257,745
Unrealized Gains	3,778	5,285
Unrealized Losses	(123,166)	(113,504)
Fair Value	1,170,768	1,149,526
U.S. Government agencies
Amortized cost and fair value of investments classified as available for sale
Amortized Cost	97,515	91,945
Unrealized Gains	113	114
Unrealized Losses	(7,838)	(7,749)
Fair Value	89,790	84,310
Mortgage Backed Securities - residential
Amortized cost and fair value of investments classified as available for sale
Amortized Cost	581,177	573,002
Unrealized Gains	250	873
Unrealized Losses	(60,490)	(58,456)
Fair Value	520,937	515,419
Mortgage Backed Securities - commercial
Amortized cost and fair value of investments classified as available for sale
Amortized Cost	12,668	12,712
Unrealized Gains	1	2
Unrealized Losses	(429)	(328)
Fair Value	12,240	12,386
Collateralized mortgage obligations
Amortized cost and fair value of investments classified as available for sale
Amortized Cost	180,592	179,638
Unrealized Gains	39	82
Unrealized Losses	(23,138)	(21,622)
Fair Value	157,493	158,098
State and municipal obligations
Amortized cost and fair value of investments classified as available for sale
Amortized Cost	397,395	379,894
Unrealized Gains	681	1,280
Unrealized Losses	(29,257)	(23,456)
Fair Value	368,819	357,718
Municipal taxable
Amortized cost and fair value of investments classified as available for sale
Amortized Cost	20,561	20,554
Unrealized Gains	52	84
Unrealized Losses	(2,014)	(1,893)
Fair Value	18,599	18,745
Collateralized debt obligations
Amortized cost and fair value of investments classified as available for sale
Amortized Cost	248
Unrealized Gains	2,642	2,850
Fair Value	$ 2,890	$ 2,850

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost excluding accrued interest, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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