Note 3 - Investment Securities (Tables)
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6 Months Ended |
Jun. 30, 2026 |
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| Notes Tables |
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| Schedule of Available for Sale Securities, and Held to Maturity [Table Text Block] |
| | | | | | | Gross | | | Gross | | | | | |
| | | Amortized | | | Unrealized | | | Unrealized | | | Fair | |
| June 30, 2026 | | Cost | | | Gains | | | Losses | | | Value | |
| Available for sale | | (dollars in thousands) | |
| Government agency securities | | $ | 20,496 | | | $ | — | | | $ | (214 | ) | | $ | 20,282 | |
| SBA agency securities | | | 19,628 | | | | — | | | | (309 | ) | | | 19,319 | |
| MBS: Residential | | | 93,622 | | | | 201 | | | | (5,013 | ) | | | 88,810 | |
| MBS: Commercial | | | 9,993 | | | | — | | | | (28 | ) | | | 9,965 | |
| CMO: Residential | | | 115,089 | | | | 159 | | | | (9,381 | ) | | | 105,867 | |
| CMO: Commercial | | | 82,065 | | | | 111 | | | | (2,141 | ) | | | 80,035 | |
| Commercial paper | | | 49,672 | | | | — | | | | (9 | ) | | | 49,663 | |
| Corporate debt securities | | | 24,907 | | | | 73 | | | | (1,518 | ) | | | 23,462 | |
| Municipal tax-exempt securities | | | 12,550 | | | | — | | | | (2,793 | ) | | | 9,757 | |
| Total available for sale | | $ | 428,022 | | | $ | 544 | | | $ | (21,406 | ) | | $ | 407,160 | |
| | | | | | | | | | | | | | | | | |
| Held to maturity | | | | | | | | | | | | | | | | |
| Municipal tax-exempt securities | | $ | 4,181 | | | $ | — | | | $ | (103 | ) | | $ | 4,078 | |
| Total held to maturity | | $ | 4,181 | | | $ | — | | | $ | (103 | ) | | $ | 4,078 | |
| | | | | | | Gross | | | Gross | | | | | |
| | | Amortized | | | Unrealized | | | Unrealized | | | Fair | |
| December 31, 2025 | | Cost | | | Gains | | | Losses | | | Value | |
| Available for sale | | (dollars in thousands) | |
| Government agency securities | | $ | 22,850 | | | $ | 34 | | | $ | (179 | ) | | $ | 22,705 | |
| SBA agency securities | | | 21,326 | | | | 90 | | | | (236 | ) | | | 21,180 | |
| MBS: Residential | | | 91,049 | | | | 634 | | | | (4,505 | ) | | | 87,178 | |
| MBS: Commercial | | | 5,010 | | | | — | | | | (33 | ) | | | 4,977 | |
| CMO: Residential | | | 120,475 | | | | 760 | | | | (8,740 | ) | | | 112,495 | |
| CMO: Commercial | | | 102,755 | | | | 183 | | | | (2,161 | ) | | | 100,777 | |
| Commercial paper | | | 19,948 | | | | — | | | | — | | | | 19,948 | |
| Corporate debt securities | | | 30,165 | | | | 75 | | | | (1,811 | ) | | | 28,429 | |
| Municipal tax-exempt securities | | | 12,567 | | | | — | | | | (3,052 | ) | | | 9,515 | |
| Total available for sale | | $ | 426,145 | | | $ | 1,776 | | | $ | (20,717 | ) | | $ | 407,204 | |
| | | | | | | | | | | | | | | | | |
| Held to maturity | | | | | | | | | | | | | | | | |
| Municipal tax-exempt securities | | $ | 4,184 | | | $ | — | | | $ | (81 | ) | | $ | 4,103 | |
| Total held to maturity | | $ | 4,184 | | | $ | — | | | $ | (81 | ) | | $ | 4,103 | |
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| Investments Classified by Contractual Maturity Date [Table Text Block] |
| | | One Year or Less | | | More than One Year to Five Years | | | More than Five Years to Ten Years | | | More than Ten Years | | | Total | |
| | | Amortized Cost | | | Fair Value | | | Amortized Cost | | | Fair Value | | | Amortized Cost | | | Fair Value | | | Amortized Cost | | | Fair Value | | | Amortized Cost | | | Fair Value | |
| June 30, 2026 | | (dollars in thousands) |
| Government agency securities | | $ | — | | | $ | — | | | $ | 20,496 | | | $ | 20,282 | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | 20,496 | | | $ | 20,282 | |
| SBA agency securities | | | — | | | | — | | | | 6,162 | | | | 6,034 | | | | 13,466 | | | | 13,285 | | | | — | | | | — | | | | 19,628 | | | | 19,319 | |
| MBS: Residential | | | — | | | | — | | | | 26,842 | | | | 26,470 | | | | 66,780 | | | | 62,340 | | | | — | | | | — | | | | 93,622 | | | | 88,810 | |
| MBS: Commercial | | | 4,983 | | | | 4,974 | | | | 5,010 | | | | 4,991 | | | | — | | | | — | | | | — | | | | — | | | | 9,993 | | | | 9,965 | |
| CMO: Residential | | | 785 | | | | 784 | | | | 70,587 | | | | 69,335 | | | | 43,717 | | | | 35,748 | | | | — | | | | — | | | | 115,089 | | | | 105,867 | |
| CMO: Commercial | | | 2,367 | | | | 2,334 | | | | 37,518 | | | | 37,035 | | | | 42,180 | | | | 40,666 | | | | — | | | | — | | | | 82,065 | | | | 80,035 | |
| Commercial paper | | | 49,672 | | | | 49,663 | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | 49,672 | | | | 49,663 | |
| Corporate debt securities | | | 2,007 | | | | 2,001 | | | | 12,422 | | | | 12,132 | | | | 7,900 | | | | 7,442 | | | | 2,578 | | | | 1,887 | | | | 24,907 | | | | 23,462 | |
| Municipal tax-exempt securities | | | — | | | | — | | | | — | | | | — | | | | 1,079 | | | | 909 | | | | 11,471 | | | | 8,848 | | | | 12,550 | | | | 9,757 | |
| Total AFS | | $ | 59,814 | | | $ | 59,756 | | | $ | 179,037 | | | $ | 176,279 | | | $ | 175,122 | | | $ | 160,390 | | | $ | 14,049 | | | $ | 10,735 | | | $ | 428,022 | | | $ | 407,160 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Municipal tax-exempt securities | | $ | — | | | $ | — | | | $ | 1,741 | | | $ | 1,719 | | | $ | 2,440 | | | $ | 2,359 | | | $ | — | | | $ | — | | | $ | 4,181 | | | $ | 4,078 | |
| Total HTM | | $ | — | | | $ | — | | | $ | 1,741 | | | $ | 1,719 | | | $ | 2,440 | | | $ | 2,359 | | | $ | — | | | $ | — | | | $ | 4,181 | | | $ | 4,078 | |
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| December 31, 2025 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Government agency securities | | $ | 65 | | | $ | 65 | | | $ | 22,785 | | | $ | 22,640 | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | 22,850 | | | $ | 22,705 | |
| SBA agency securities | | | — | | | | — | | | | 6,496 | | | | 6,456 | | | | 14,830 | | | | 14,724 | | | | — | | | | — | | | | 21,326 | | | | 21,180 | |
| MBS: Residential | | | — | | | | — | | | | 26,636 | | | | 26,537 | | | | 64,413 | | | | 60,641 | | | | — | | | | — | | | | 91,049 | | | | 87,178 | |
| MBS: Commercial | | | — | | | | — | | | | 5,010 | | | | 4,977 | | | | — | | | | — | | | | — | | | | — | | | | 5,010 | | | | 4,977 | |
| CMO: Residential | | | 6,198 | | | | 6,248 | | | | 68,422 | | | | 68,100 | | | | 45,855 | | | | 38,147 | | | | — | | | | — | | | | 120,475 | | | | 112,495 | |
| CMO: Commercial | | | 6,629 | | | | 6,591 | | | | 51,805 | | | | 51,365 | | | | 44,321 | | | | 42,821 | | | | — | | | | — | | | | 102,755 | | | | 100,777 | |
| Commercial paper | | | 19,948 | | | | 19,948 | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | 19,948 | | | | 19,948 | |
| Corporate debt securities | | | 4,022 | | | | 4,006 | | | | 8,903 | | | | 8,733 | | | | 14,650 | | | | 13,756 | | | | 2,590 | | | | 1,934 | | | | 30,165 | | | | 28,429 | |
| Municipal tax-exempt securities | | | — | | | | — | | | | — | | | | — | | | | 1,081 | | | | 921 | | | | 11,486 | | | | 8,594 | | | | 12,567 | | | | 9,515 | |
| Total AFS | | $ | 36,862 | | | $ | 36,858 | | | $ | 190,057 | | | $ | 188,808 | | | $ | 185,150 | | | $ | 171,010 | | | $ | 14,076 | | | $ | 10,528 | | | $ | 426,145 | | | $ | 407,204 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Municipal tax-exempt securities | | $ | — | | | $ | — | | | $ | 860 | | | $ | 857 | | | $ | 2,817 | | | $ | 2,742 | | | $ | 507 | | | $ | 504 | | | $ | 4,184 | | | $ | 4,103 | |
| Total HTM | | $ | — | | | $ | — | | | $ | 860 | | | $ | 857 | | | $ | 2,817 | | | $ | 2,742 | | | $ | 507 | | | $ | 504 | | | $ | 4,184 | | | $ | 4,103 | |
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| Gain (Loss) on Securities [Table Text Block] |
| | | Less than Twelve Months | | | Twelve Months or More | | | Total | |
| | | Fair Value | | | Unrealized Losses | | | # of Issuances | | | Fair Value | | | Unrealized Losses | | | # of Issuances | | | Fair Value | | | Unrealized Losses | | | # of Issuances | |
| June 30, 2026 | | (dollars in thousands) | |
| Government agency securities | | $ | 11,027 | | | $ | (56 | ) | | | 3 | | | $ | 5,301 | | | $ | (158 | ) | | | 2 | | | $ | 16,328 | | | $ | (214 | ) | | | 5 | |
| SBA agency securities | | | 16,551 | | | | (163 | ) | | | 6 | | | | 2,768 | | | | (146 | ) | | | 5 | | | | 19,319 | | | | (309 | ) | | | 11 | |
| MBS: Residential | | | 42,983 | | | | (594 | ) | | | 12 | | | | 25,644 | | | | (4,419 | ) | | | 15 | | | | 68,627 | | | | (5,013 | ) | | | 27 | |
| MBS: Commercial | | | 9,965 | | | | (28 | ) | | | 2 | | | | — | | | | — | | | | — | | | | 9,965 | | | | (28 | ) | | | 2 | |
| CMO: Residential | | | 27,637 | | | | (275 | ) | | | 8 | | | | 48,563 | | | | (9,106 | ) | | | 23 | | | | 76,200 | | | | (9,381 | ) | | | 31 | |
| CMO: Commercial | | | 14,891 | | | | (34 | ) | | | 4 | | | | 42,155 | | | | (2,107 | ) | | | 19 | | | | 57,046 | | | | (2,141 | ) | | | 23 | |
| Commercial paper | | | 19,786 | | | | (9 | ) | | | 2 | | | | — | | | | — | | | | — | | | | 19,786 | | | | (9 | ) | | | 2 | |
| Corporate debt securities | | | 986 | | | | (13 | ) | | | 2 | | | | 16,604 | | | | (1,505 | ) | | | 18 | | | | 17,590 | | | | (1,518 | ) | | | 20 | |
| Municipal tax-exempt securities | | | — | | | | — | | | | — | | | | 9,757 | | | | (2,793 | ) | | | 11 | | | | 9,757 | | | | (2,793 | ) | | | 11 | |
| Total AFS | | $ | 143,826 | | | $ | (1,172 | ) | | | 39 | | | $ | 150,792 | | | $ | (20,234 | ) | | | 93 | | | $ | 294,618 | | | $ | (21,406 | ) | | | 132 | |
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| Municipal tax-exempt securities | | $ | 1,173 | | | $ | (17 | ) | | | 3 | | | $ | 2,465 | | | $ | (86 | ) | | | 5 | | | $ | 3,638 | | | $ | (103 | ) | | | 8 | |
| Total HTM | | $ | 1,173 | | | $ | (17 | ) | | | 3 | | | $ | 2,465 | | | $ | (86 | ) | | | 5 | | | $ | 3,638 | | | $ | (103 | ) | | | 8 | |
| | | Less than Twelve Months | | | Twelve Months or More | | | Total | |
| | | Fair Value | | | Unrealized Losses | | | # of Issuances | | | Fair Value | | | Unrealized Losses | | | # of Issuances | | | Fair Value | | | Unrealized Losses | | | # of Issuances | |
| December 31, 2025 | | (dollars in thousands) | |
| Government agency securities | | $ | 1,749 | | | $ | (6 | ) | | | 1 | | | $ | 6,572 | | | $ | (173 | ) | | | 3 | | | $ | 8,321 | | | $ | (179 | ) | | | 4 | |
| SBA agency securities | | | 7,654 | | | | (93 | ) | | | 3 | | | | 2,962 | | | | (143 | ) | | | 5 | | | | 10,616 | | | | (236 | ) | | | 8 | |
| MBS: Residential | | | 14,196 | | | | (91 | ) | | | 4 | | | | 27,573 | | | | (4,414 | ) | | | 15 | | | | 41,769 | | | | (4,505 | ) | | | 19 | |
| MBS: Commercial | | | 4,977 | | | | (33 | ) | | | 1 | | | | — | | | | — | | | | — | | | | 4,977 | | | | (33 | ) | | | 1 | |
| CMO: Residential | | | 3,130 | | | | (1 | ) | | | 1 | | | | 53,195 | | | | (8,739 | ) | | | 24 | | | | 56,325 | | | | (8,740 | ) | | | 25 | |
| CMO: Commercial | | | 13,947 | | | | (31 | ) | | | 4 | | | | 49,366 | | | | (2,130 | ) | | | 21 | | | | 63,313 | | | | (2,161 | ) | | | 25 | |
| Corporate debt securities | | | — | | | | — | | | | — | | | | 22,577 | | | | (1,811 | ) | | | 24 | | | | 22,577 | | | | (1,811 | ) | | | 24 | |
| Municipal tax-exempt securities | | | — | | | | — | | | | — | | | | 9,515 | | | | (3,052 | ) | | | 11 | | | | 9,515 | | | | (3,052 | ) | | | 11 | |
| Total AFS | | $ | 45,653 | | | $ | (255 | ) | | | 14 | | | $ | 171,760 | | | $ | (20,462 | ) | | | 103 | | | $ | 217,413 | | | $ | (20,717 | ) | | | 117 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Municipal tax-exempt securities | | $ | — | | | $ | — | | | | — | | | $ | 3,663 | | | $ | (81 | ) | | | 8 | | | $ | 3,663 | | | $ | (81 | ) | | | 8 | |
| Total HTM | | $ | — | | | $ | — | | | | — | | | $ | 3,663 | | | $ | (81 | ) | | | 8 | | | $ | 3,663 | | | $ | (81 | ) | | | 8 | |
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