Quarterly report [Sections 13 or 15(d)]

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

v3.25.2
Note 4 - Securities - Investment Securities Continuous Unrealized Loss Position (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Debt securities available for sale, less than twelve months, gross unrealized losses $ 743 $ 1,758
Debt securities available for sale, less than twelve months, fair value 92,270 276,720
Debt Securities Available for Sale, Twelve Months or More, Gross Unrealized Losses 26,986 44,570
Debt Securities, Available for Sale, Twelve Months or More, Fair Value 365,236 472,739
Debt Securities, Available for Sale, Gross Unrealized Losses 27,728 46,328
Debt Securities, Available for Sale, Fair Value 457,506 749,459
Debt securities held to maturity, less than twelve months, gross unrealized losses 202 536
Debt securities held to maturity, less than twelve months, fair value 30,026 40,115
Debt securities held to maturity, more than twelve months, gross unrealized losses 56,476 74,835
Debt securities held to maturity, more than twelve months, fair value 582,375 593,233
Debt securities held to maturity, gross unrealized losses 56,678 75,371
Debt securities held to maturity, fair value 612,400 633,348
Total (56,678) (75,371)
US Treasury Securities [Member]    
Debt securities available for sale, less than twelve months, gross unrealized losses 37 445
Debt securities available for sale, less than twelve months, fair value 68,554 250,547
Debt Securities Available for Sale, Twelve Months or More, Gross Unrealized Losses (0) (0)
Debt Securities, Available for Sale, Twelve Months or More, Fair Value 0 0
Debt Securities, Available for Sale, Gross Unrealized Losses 37 445
Debt Securities, Available for Sale, Fair Value 68,554 250,547
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 13,349 19,632
Debt securities held to maturity, more than twelve months, fair value 236,163 229,771
Debt securities held to maturity, gross unrealized losses 13,349 19,632
Debt securities held to maturity, fair value 236,162 229,771
Total (13,349) (19,632)
Collateralized Mortgage-Backed Securities [Member]    
Debt securities available for sale, less than twelve months, gross unrealized losses (0) 6
Debt securities available for sale, less than twelve months, fair value 72 577
Debt Securities Available for Sale, Twelve Months or More, Gross Unrealized Losses 9,610 24,204
Debt Securities, Available for Sale, Twelve Months or More, Fair Value 106,391 179,178
Debt Securities, Available for Sale, Gross Unrealized Losses 9,610 24,210
Debt Securities, Available for Sale, Fair Value 106,463 179,755
Debt securities held to maturity, less than twelve months, gross unrealized losses 125 536
Debt securities held to maturity, less than twelve months, fair value 27,124 40,115
Debt securities held to maturity, more than twelve months, gross unrealized losses 42,779 54,614
Debt securities held to maturity, more than twelve months, fair value 341,693 356,215
Debt securities held to maturity, gross unrealized losses 42,904 55,150
Debt securities held to maturity, fair value 368,817 396,330
Total (42,904) (55,150)
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 728 1,000
Debt Securities, Available for Sale, Twelve Months or More, Fair Value 9,194 9,072
Debt Securities, Available for Sale, Gross Unrealized Losses 728 1,000
Debt Securities, Available for Sale, Fair Value 9,194 9,072
Debt securities held to maturity, less than twelve months, gross unrealized losses 77 (0)
Debt securities held to maturity, less than twelve months, fair value 2,902 0
Debt securities held to maturity, more than twelve months, gross unrealized losses 348 589
Debt securities held to maturity, more than twelve months, fair value 4,519 7,247
Debt securities held to maturity, gross unrealized losses 425 589
Debt securities held to maturity, fair value 7,421 7,247
Total (425) (589)
Corporate Debt Securities [Member]    
Debt securities available for sale, less than twelve months, gross unrealized losses 706 1,307
Debt securities available for sale, less than twelve months, fair value 23,644 25,596
Debt Securities Available for Sale, Twelve Months or More, Gross Unrealized Losses 16,648 19,366
Debt Securities, Available for Sale, Twelve Months or More, Fair Value 249,651 284,489
Debt Securities, Available for Sale, Gross Unrealized Losses 17,353 20,673
Debt Securities, Available for Sale, Fair Value $ 273,295 $ 310,085