Quarterly report [Sections 13 or 15(d)]

Note 4 - Securities - Investment Securities Continuous Unrealized Loss Position (Details)

v3.26.1
Note 4 - Securities - Investment Securities Continuous Unrealized Loss Position (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Debt securities available for sale, less than twelve months, gross unrealized losses $ 1,708 $ 984
Debt securities available for sale, less than twelve months, fair value 177,016 77,583
Debt Securities Available for Sale, Twelve Months or More, Gross Unrealized Losses 8,553 9,632
Debt Securities, Available for Sale, Twelve Months or More, Fair Value 169,731 187,749
Debt Securities, Available for Sale, Gross Unrealized Losses 10,261 10,616
Debt Securities, Available for Sale, Fair Value 346,747 265,332
Debt securities held to maturity, less than twelve months, gross unrealized losses 8 34
Debt securities held to maturity, less than twelve months, fair value 2,382 2,954
Debt securities held to maturity, more than twelve months, gross unrealized losses 45,260 44,250
Debt securities held to maturity, more than twelve months, fair value 560,100 569,943
Debt securities held to maturity, gross unrealized losses 45,268 44,284
Debt securities held to maturity, fair value 562,482 572,897
Total (45,268) (44,284)
Collateralized Mortgage-Backed Securities [Member]    
Debt securities available for sale, less than twelve months, gross unrealized losses 267 (0)
Debt securities available for sale, less than twelve months, fair value 44,592 0
Debt Securities Available for Sale, Twelve Months or More, Gross Unrealized Losses 859 852
Debt Securities, Available for Sale, Twelve Months or More, Fair Value 20,018 22,662
Debt Securities, Available for Sale, Gross Unrealized Losses 1,126 852
Debt Securities, Available for Sale, Fair Value 64,610 22,662
Debt securities held to maturity, less than twelve months, gross unrealized losses 8 (0)
Debt securities held to maturity, less than twelve months, fair value 2,382 0
Debt securities held to maturity, more than twelve months, gross unrealized losses 35,547 34,395
Debt securities held to maturity, more than twelve months, fair value 312,274 325,307
Debt securities held to maturity, gross unrealized losses 35,555 34,395
Debt securities held to maturity, fair value 314,656 325,307
Total (35,555) (34,395)
US States and Political Subdivisions Debt Securities [Member]    
Debt securities available for sale, less than twelve months, gross unrealized losses (0) (0)
Debt securities available for sale, less than twelve months, fair value 0 0
Debt Securities Available for Sale, Twelve Months or More, Gross Unrealized Losses 539 554
Debt Securities, Available for Sale, Twelve Months or More, Fair Value 9,376 9,363
Debt Securities, Available for Sale, Gross Unrealized Losses 539 554
Debt Securities, Available for Sale, Fair Value 9,376 9,363
Debt securities held to maturity, less than twelve months, gross unrealized losses (0) 34
Debt securities held to maturity, less than twelve months, fair value 0 2,954
Debt securities held to maturity, more than twelve months, gross unrealized losses 293 266
Debt securities held to maturity, more than twelve months, fair value 7,571 4,604
Debt securities held to maturity, gross unrealized losses 293 300
Debt securities held to maturity, fair value 7,571 7,558
Total (293) (300)
Corporate Debt Securities [Member]    
Debt securities available for sale, less than twelve months, gross unrealized losses 1,441 984
Debt securities available for sale, less than twelve months, fair value 132,424 77,583
Debt Securities Available for Sale, Twelve Months or More, Gross Unrealized Losses 7,155 8,226
Debt Securities, Available for Sale, Twelve Months or More, Fair Value 140,337 155,724
Debt Securities, Available for Sale, Gross Unrealized Losses 8,596 9,210
Debt Securities, Available for Sale, Fair Value 272,761 233,307
US Treasury Securities [Member]    
Debt securities held to maturity, less than twelve months, gross unrealized losses (0) (0)
Debt securities held to maturity, less than twelve months, fair value 0 0
Debt securities held to maturity, more than twelve months, gross unrealized losses 9,420 9,589
Debt securities held to maturity, more than twelve months, fair value 240,255 240,032
Debt securities held to maturity, gross unrealized losses 9,420 9,589
Debt securities held to maturity, fair value 240,255 240,032
Total $ (9,420) $ (9,589)