Note 3 - Investment Securities - Summary of Investment Securities with Unrealized Losses (Details) $ in Thousands |
Jun. 30, 2026
USD ($)
|
Dec. 31, 2025
USD ($)
|
| Less than Twelve Months Estimated Fair Value, available for sale |
$ 143,826
|
$ 45,653
|
| Less than Twelve Months Unrealized Losses, available for sale |
$ (1,172)
|
$ (255)
|
| Less than Twelve Months, Number of Positions, available for sale |
39
|
14
|
| Twelve Months or More Estimated Fair Value, available for sale |
$ 150,792
|
$ 171,760
|
| Twelve Months or More Unrealized Losses, available for sale |
$ (20,234)
|
$ (20,462)
|
| Twelve Months or More, number of positions, available for sale |
93
|
103
|
| Total Estimated Fair Value, available for sale |
$ 294,618
|
$ 217,413
|
| Total Unrealized Losses, available for sale |
$ (21,406)
|
$ (20,717)
|
| Total Number of Positions, available for sale |
132
|
117
|
| Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value 1 |
$ 1,173
|
$ 0
|
| Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 1 |
$ (17)
|
$ 0
|
| Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less Than 12 Months, Number of Positions 1 |
3
|
0
|
| Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value 1 |
$ 2,465
|
$ 3,663
|
| Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 1 |
$ (86)
|
$ (81)
|
| Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions 1 |
5
|
8
|
| Debt Securities, Held-to-Maturity, Unrealized Loss Position, Fair Value 1 |
$ 3,638
|
$ 3,663
|
| Debt Securities, Held-to-Maturity, Unrealized Loss Position, Accumulated Loss 1 |
$ (103)
|
$ (81)
|
| Debt Securities, Held-to-Maturity, Unrealized Loss Position, Number of Positions 1 |
8
|
8
|
| US Government Agencies Debt Securities [Member] |
|
|
| Less than Twelve Months Estimated Fair Value, available for sale |
$ 11,027
|
$ 1,749
|
| Less than Twelve Months Unrealized Losses, available for sale |
$ (56)
|
$ (6)
|
| Less than Twelve Months, Number of Positions, available for sale |
3
|
1
|
| Twelve Months or More Estimated Fair Value, available for sale |
$ 5,301
|
$ 6,572
|
| Twelve Months or More Unrealized Losses, available for sale |
$ (158)
|
$ (173)
|
| Twelve Months or More, number of positions, available for sale |
2
|
3
|
| Total Estimated Fair Value, available for sale |
$ 16,328
|
$ 8,321
|
| Total Unrealized Losses, available for sale |
$ (214)
|
$ (179)
|
| Total Number of Positions, available for sale |
5
|
4
|
| Small Business Administration Agency Securities [Member] |
|
|
| Less than Twelve Months Estimated Fair Value, available for sale |
$ 16,551
|
$ 7,654
|
| Less than Twelve Months Unrealized Losses, available for sale |
$ (163)
|
$ (93)
|
| Less than Twelve Months, Number of Positions, available for sale |
6
|
3
|
| Twelve Months or More Estimated Fair Value, available for sale |
$ 2,768
|
$ 2,962
|
| Twelve Months or More Unrealized Losses, available for sale |
$ (146)
|
$ (143)
|
| Twelve Months or More, number of positions, available for sale |
5
|
5
|
| Total Estimated Fair Value, available for sale |
$ 19,319
|
$ 10,616
|
| Total Unrealized Losses, available for sale |
$ (309)
|
$ (236)
|
| Total Number of Positions, available for sale |
11
|
8
|
| Residential Mortgage-Backed Securities [Member] |
|
|
| Less than Twelve Months Estimated Fair Value, available for sale |
$ 42,983
|
$ 14,196
|
| Less than Twelve Months Unrealized Losses, available for sale |
$ (594)
|
$ (91)
|
| Less than Twelve Months, Number of Positions, available for sale |
12
|
4
|
| Twelve Months or More Estimated Fair Value, available for sale |
$ 25,644
|
$ 27,573
|
| Twelve Months or More Unrealized Losses, available for sale |
$ (4,419)
|
$ (4,414)
|
| Twelve Months or More, number of positions, available for sale |
15
|
15
|
| Total Estimated Fair Value, available for sale |
$ 68,627
|
$ 41,769
|
| Total Unrealized Losses, available for sale |
$ (5,013)
|
$ (4,505)
|
| Total Number of Positions, available for sale |
27
|
19
|
| Commercial Mortgage-Backed Securities [Member] |
|
|
| Less than Twelve Months Estimated Fair Value, available for sale |
$ 9,965
|
$ 4,977
|
| Less than Twelve Months Unrealized Losses, available for sale |
$ (28)
|
$ (33)
|
| Less than Twelve Months, Number of Positions, available for sale |
2
|
1
|
| Twelve Months or More Estimated Fair Value, available for sale |
$ 0
|
$ 0
|
| Twelve Months or More Unrealized Losses, available for sale |
$ 0
|
$ 0
|
| Twelve Months or More, number of positions, available for sale |
0
|
0
|
| Total Estimated Fair Value, available for sale |
$ 9,965
|
$ 4,977
|
| Total Unrealized Losses, available for sale |
$ (28)
|
$ (33)
|
| Total Number of Positions, available for sale |
2
|
1
|
| Residential Collateralized Mortgage Obligations [Member] |
|
|
| Less than Twelve Months Estimated Fair Value, available for sale |
$ 27,637
|
$ 3,130
|
| Less than Twelve Months Unrealized Losses, available for sale |
$ (275)
|
$ (1)
|
| Less than Twelve Months, Number of Positions, available for sale |
8
|
1
|
| Twelve Months or More Estimated Fair Value, available for sale |
$ 48,563
|
$ 53,195
|
| Twelve Months or More Unrealized Losses, available for sale |
$ (9,106)
|
$ (8,739)
|
| Twelve Months or More, number of positions, available for sale |
23
|
24
|
| Total Estimated Fair Value, available for sale |
$ 76,200
|
$ 56,325
|
| Total Unrealized Losses, available for sale |
$ (9,381)
|
$ (8,740)
|
| Total Number of Positions, available for sale |
31
|
25
|
| Commercial Collateralized Mortgage Obligations [Member] |
|
|
| Less than Twelve Months Estimated Fair Value, available for sale |
$ 14,891
|
$ 13,947
|
| Less than Twelve Months Unrealized Losses, available for sale |
$ (34)
|
$ (31)
|
| Less than Twelve Months, Number of Positions, available for sale |
4
|
4
|
| Twelve Months or More Estimated Fair Value, available for sale |
$ 42,155
|
$ 49,366
|
| Twelve Months or More Unrealized Losses, available for sale |
$ (2,107)
|
$ (2,130)
|
| Twelve Months or More, number of positions, available for sale |
19
|
21
|
| Total Estimated Fair Value, available for sale |
$ 57,046
|
$ 63,313
|
| Total Unrealized Losses, available for sale |
$ (2,141)
|
$ (2,161)
|
| Total Number of Positions, available for sale |
23
|
25
|
| Commercial Paper [Member] |
|
|
| Less than Twelve Months Estimated Fair Value, available for sale |
$ 19,786
|
|
| Less than Twelve Months Unrealized Losses, available for sale |
$ (9)
|
|
| Less than Twelve Months, Number of Positions, available for sale |
2
|
|
| Twelve Months or More Estimated Fair Value, available for sale |
$ 0
|
|
| Twelve Months or More Unrealized Losses, available for sale |
$ 0
|
|
| Twelve Months or More, number of positions, available for sale |
0
|
|
| Total Estimated Fair Value, available for sale |
$ 19,786
|
|
| Total Unrealized Losses, available for sale |
$ (9)
|
|
| Total Number of Positions, available for sale |
2
|
|
| Corporate Debt Securities [Member] |
|
|
| Less than Twelve Months Estimated Fair Value, available for sale |
$ 986
|
$ 0
|
| Less than Twelve Months Unrealized Losses, available for sale |
$ (13)
|
$ 0
|
| Less than Twelve Months, Number of Positions, available for sale |
2
|
0
|
| Twelve Months or More Estimated Fair Value, available for sale |
$ 16,604
|
$ 22,577
|
| Twelve Months or More Unrealized Losses, available for sale |
$ (1,505)
|
$ (1,811)
|
| Twelve Months or More, number of positions, available for sale |
18
|
24
|
| Total Estimated Fair Value, available for sale |
$ 17,590
|
$ 22,577
|
| Total Unrealized Losses, available for sale |
$ (1,518)
|
$ (1,811)
|
| Total Number of Positions, available for sale |
20
|
24
|
| Nontaxable Municipal Bonds [Member] |
|
|
| Less than Twelve Months Estimated Fair Value, available for sale |
$ 0
|
$ 0
|
| Less than Twelve Months Unrealized Losses, available for sale |
$ 0
|
$ 0
|
| Less than Twelve Months, Number of Positions, available for sale |
0
|
0
|
| Twelve Months or More Estimated Fair Value, available for sale |
$ 9,757
|
$ 9,515
|
| Twelve Months or More Unrealized Losses, available for sale |
$ (2,793)
|
$ (3,052)
|
| Twelve Months or More, number of positions, available for sale |
11
|
11
|
| Total Estimated Fair Value, available for sale |
$ 9,757
|
$ 9,515
|
| Total Unrealized Losses, available for sale |
$ (2,793)
|
$ (3,052)
|
| Total Number of Positions, available for sale |
11
|
11
|
| Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value 1 |
$ 1,173
|
$ 0
|
| Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 1 |
$ (17)
|
$ 0
|
| Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less Than 12 Months, Number of Positions 1 |
3
|
0
|
| Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value 1 |
$ 2,465
|
$ 3,663
|
| Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 1 |
$ (86)
|
$ (81)
|
| Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions 1 |
5
|
8
|
| Debt Securities, Held-to-Maturity, Unrealized Loss Position, Fair Value 1 |
$ 3,638
|
$ 3,663
|
| Debt Securities, Held-to-Maturity, Unrealized Loss Position, Accumulated Loss 1 |
$ (103)
|
$ (81)
|
| Debt Securities, Held-to-Maturity, Unrealized Loss Position, Number of Positions 1 |
8
|
8
|