v3.26.1
Note 3 - Debt Securities Available for Sale and Held to Maturity - Gross Unrealized Losses, Investment Securities Portfolio (Details)
$ in Thousands
Jun. 30, 2026
USD ($)
Dec. 31, 2025
USD ($)
Positions 165 62
Held to Maturity securities, less than 12 months, number of investment positions 29 0
Fair Value $ 1,286,366 $ 474,949
Held to Maturity securities, less than 12 months, fair value 300,414 0
Losses (23,965) (3,636)
Held to Maturity securities, less than 12 months, unrealized loss $ (1,724) $ 0
Positions 266 288
Held to Maturity securities, 12 months or longer, number of investment positions 84 99
Fair Value $ 2,147,948 $ 2,349,226
Held to Maturity securities, 12 months or longer, fair value 398,009 416,031
Losses (143,260) (127,837)
Held to Maturity securities, 12 months or longer, unrealized loss $ (16,211) $ (10,276)
Positions 431 350
Held to Maturity securities, total, number of investment positions 113 99
Fair Value $ 3,434,314 $ 2,824,175
Held to Maturity securities, total, fair value 698,423 416,031
Losses (167,225) (131,473)
Held to Maturity securities, total, unrealized loss $ (17,935) $ (10,276)
Agency Residential MBS [Member]    
Positions 5 2
Held to Maturity securities, less than 12 months, number of investment positions 0 0
Fair Value $ 9,256 $ 10,541
Held to Maturity securities, less than 12 months, fair value 0 0
Losses (195) (147)
Held to Maturity securities, less than 12 months, unrealized loss $ 0 $ 0
Positions 104 107
Held to Maturity securities, 12 months or longer, number of investment positions 52 59
Fair Value $ 157,738 $ 173,186
Held to Maturity securities, 12 months or longer, fair value 35,586 40,523
Losses (11,517) (9,909)
Held to Maturity securities, 12 months or longer, unrealized loss $ (2,388) $ (2,231)
Positions 109 109
Held to Maturity securities, total, number of investment positions 52 59
Fair Value $ 166,994 $ 183,727
Held to Maturity securities, total, fair value 35,586 40,523
Losses (11,712) (10,056)
Held to Maturity securities, total, unrealized loss $ (2,388) $ (2,231)
Agency Commercial MBS [Member]    
Positions 139 56
Held to Maturity securities, less than 12 months, number of investment positions 2  
Fair Value $ 1,129,439 $ 438,102
Held to Maturity securities, less than 12 months, fair value 19,251  
Losses (21,372) $ (3,411)
Held to Maturity securities, less than 12 months, unrealized loss $ (78)  
Positions 0 0
Held to Maturity securities, 12 months or longer, number of investment positions 0  
Fair Value $ 0 $ 0
Held to Maturity securities, 12 months or longer, fair value 0  
Losses 0 $ 0
Held to Maturity securities, 12 months or longer, unrealized loss $ 0  
Positions 139 56
Held to Maturity securities, total, number of investment positions 2  
Fair Value $ 1,129,439 $ 438,102
Held to Maturity securities, total, fair value 19,251  
Losses (21,372) $ (3,411)
Held to Maturity securities, total, unrealized loss $ (78)  
US States and Political Subdivisions Debt Securities [Member]    
Positions 0 2
Held to Maturity securities, less than 12 months, number of investment positions 0 0
Fair Value $ 0 $ 3,382
Held to Maturity securities, less than 12 months, fair value 0 0
Losses 0 (1)
Held to Maturity securities, less than 12 months, unrealized loss $ 0 $ 0
Positions 23 28
Held to Maturity securities, 12 months or longer, number of investment positions 9 17
Fair Value $ 27,833 $ 37,520
Held to Maturity securities, 12 months or longer, fair value 7,327 16,087
Losses (540) (542)
Held to Maturity securities, 12 months or longer, unrealized loss $ (12) $ (36)
Positions 23 30
Held to Maturity securities, total, number of investment positions 9 17
Fair Value $ 27,833 $ 40,902
Held to Maturity securities, total, fair value 7,327 16,087
Losses (540) (543)
Held to Maturity securities, total, unrealized loss $ (12) $ (36)
US Government Agencies Debt Securities [Member]    
Positions 3 0
Fair Value $ 15,456 $ 0
Losses $ (75) $ 0
Positions 18 19
Fair Value $ 281,075 $ 284,747
Losses $ (11,670) $ (6,739)
Positions 21 19
Fair Value $ 296,531 $ 284,747
Losses $ (11,745) $ (6,739)
Corporate Debt Securities [Member]    
Positions 18 0
Held to Maturity securities, less than 12 months, number of investment positions 27 0
Fair Value $ 132,215 $ 0
Held to Maturity securities, less than 12 months, fair value 281,163 0
Losses (2,323) 0
Held to Maturity securities, less than 12 months, unrealized loss $ (1,646) $ 0
Positions 117 129
Held to Maturity securities, 12 months or longer, number of investment positions 23 23
Fair Value $ 1,648,862 $ 1,804,080
Held to Maturity securities, 12 months or longer, fair value 355,096 359,421
Losses (119,294) (109,473)
Held to Maturity securities, 12 months or longer, unrealized loss $ (13,811) $ (8,009)
Positions 135 129
Held to Maturity securities, total, number of investment positions 50 23
Fair Value $ 1,781,077 $ 1,804,080
Held to Maturity securities, total, fair value 636,259 359,421
Losses (121,617) (109,473)
Held to Maturity securities, total, unrealized loss $ (15,457) $ (8,009)
Collateralized Debt Obligations [Member]    
Positions 0 2
Fair Value $ 0 $ 22,924
Losses $ 0 $ (77)
Positions 4 5
Fair Value $ 32,440 $ 49,693
Losses $ (239) $ (1,174)
Positions 4 7
Fair Value $ 32,440 $ 72,617
Losses $ (239) $ (1,251)