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Note 2 - INVESTMENT SECURITIES - Securities in a Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022
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Securities HTM: |  |
Securities HTM, Less than 12 Months, Fair Value | $ 276,982 |
Securities HTM, Less than 12 Months, Gross Unrealized Losses | (33,277) |
Securities HTM, 12 Months or More, Fair Value | 70,015 |
Securities HTM, 12 Months or More, Gross Unrealized Losses | (10,304) |
Securities HTM, Total, Fair Value | 346,997 |
Securities HTM, Total, Gross Unrealized Losses | (43,581) |
Securities AFS: |  |
Securities AFS, Less than 12 Months, Fair Value | 92,506 | $ 280,669
Securities AFS, Less than 12 Months, Gross Unrealized Losses | (5,775) | (48,923)
Securities AFS, 12 Months or More, Fair Value | 207,705 | 42,212
Securities AFS, 12 Months or More, Gross Unrealized Losses | (45,474) | (10,788)
Securities AFS, Total, Fair Value | 300,211 | 322,881
Securities AFS, Total, Gross Unrealized Losses | (51,249) | (59,711)
Municipal securities. |  |
Securities HTM: |  |
Securities HTM, Less than 12 Months, Fair Value | 275,950 | 347,651
Securities HTM, Less than 12 Months, Gross Unrealized Losses | (33,259) | (56,798)
Securities HTM, 12 Months or More, Fair Value | 70,015 |
Securities HTM, 12 Months or More, Gross Unrealized Losses | (10,304) |
Securities HTM, Total, Fair Value | 345,965 | 347,651
Securities HTM, Total, Gross Unrealized Losses | (43,563) | (56,798)
Securities AFS: |  |
Securities AFS, Less than 12 Months, Fair Value | 43,572 | 178,172
Securities AFS, Less than 12 Months, Gross Unrealized Losses | (3,340) | (42,661)
Securities AFS, 12 Months or More, Fair Value | 124,603 | 9,809
Securities AFS, 12 Months or More, Gross Unrealized Losses | (35,954) | (4,039)
Securities AFS, Total, Fair Value | 168,175 | 187,981
Securities AFS, Total, Gross Unrealized Losses | (39,294) | (46,700)
U.S. treasuries and govt. sponsored agency securities |  |
Securities AFS: |  |
Securities AFS, Less than 12 Months, Fair Value | 2,212 | 5,138
Securities AFS, Less than 12 Months, Gross Unrealized Losses | (4) | (326)
Securities AFS, 12 Months or More, Fair Value | 14,401 | 10,591
Securities AFS, 12 Months or More, Gross Unrealized Losses | (2,389) | (2,457)
Securities AFS, Total, Fair Value | 16,613 | 15,729
Securities AFS, Total, Gross Unrealized Losses | (2,393) | (2,783)
Residential mortgage-backed and related securities |  |
Securities AFS: |  |
Securities AFS, Less than 12 Months, Fair Value | 17,277 | 48,469
Securities AFS, Less than 12 Months, Gross Unrealized Losses | (814) | (3,327)
Securities AFS, 12 Months or More, Fair Value | 45,807 | 17,690
Securities AFS, 12 Months or More, Gross Unrealized Losses | (5,497) | (3,896)
Securities AFS, Total, Fair Value | 63,084 | 66,159
Securities AFS, Total, Gross Unrealized Losses | (6,311) | (7,223)
Asset-backed securities |  |
Securities AFS: |  |
Securities AFS, Less than 12 Months, Fair Value | 3,303 | 13,684
Securities AFS, Less than 12 Months, Gross Unrealized Losses | (5) | (205)
Securities AFS, 12 Months or More, Fair Value | 10,781 |
Securities AFS, 12 Months or More, Gross Unrealized Losses | (162) |
Securities AFS, Total, Fair Value | 14,084 | 13,684
Securities AFS, Total, Gross Unrealized Losses | (167) | (205)
Other securities |  |
Securities HTM: |  |
Securities HTM, Less than 12 Months, Fair Value | 1,032 |
Securities HTM, Less than 12 Months, Gross Unrealized Losses | (18) |
Securities HTM, Total, Fair Value | 1,032 |
Securities HTM, Total, Gross Unrealized Losses | (18) |
Securities AFS: |  |
Securities AFS, Less than 12 Months, Fair Value | 26,142 | 35,206
Securities AFS, Less than 12 Months, Gross Unrealized Losses | (1,612) | (2,404)
Securities AFS, 12 Months or More, Fair Value | 12,113 | 4,122
Securities AFS, 12 Months or More, Gross Unrealized Losses | (1,472) | (396)
Securities AFS, Total, Fair Value | 38,255 | 39,328
Securities AFS, Total, Gross Unrealized Losses | $ (3,084) | $ (2,800)

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