Note 4 - Securities - Debt Securities with Unrealized Losses (Details) - USD ($)
$ in Thousands |
Sep. 30, 2016 |
Dec. 31, 2015 |
| Collateralized Mortgage Backed Securities [Member] |
|
|
| Held-to-maturity Securities, Less than 12 Months, Fair Value |
|
$ 3,960
|
| Held-to-maturity Securities, Less than 12 Months, Unrealized Losses |
|
16
|
| Held-to-maturity Securities, 12 Months or More, Fair Value |
|
|
| Held-to-maturity Securities, 12 Months or More, Unrealized Losses |
|
|
| Held-to-maturity Securities, Total Fair Value |
|
3,960
|
| Held-to-Maturity Securities, Gross Unrealized Losses |
|
16
|
| Available-for-sale Securities, Less than 12 Months, Fair Value |
|
28,606
|
| Available-for-sale Securities, Less than 12 Months, Unrealized Losses |
|
128
|
| Available-for-sale Securities, 12 Months or More, Fair Value |
|
3,654
|
| Available-for-sale Securities, 12 Months or More, Unrealized Losses |
|
59
|
| Available-for-sale Securities, Total Fair Value |
|
32,260
|
| Available-for-sale Securities, Total Unrealized Losses |
|
187
|
| US Government Agencies Debt Securities [Member] |
|
|
| Available-for-sale Securities, Less than 12 Months, Fair Value |
3,649
|
|
| Available-for-sale Securities, Less than 12 Months, Unrealized Losses |
38
|
|
| Available-for-sale Securities, 12 Months or More, Fair Value |
|
|
| Available-for-sale Securities, 12 Months or More, Unrealized Losses |
|
|
| Available-for-sale Securities, Total Fair Value |
3,649
|
|
| Available-for-sale Securities, Total Unrealized Losses |
38
|
|
| US States and Political Subdivisions Debt Securities [Member] |
|
|
| Held-to-maturity Securities, Less than 12 Months, Fair Value |
|
1,996
|
| Held-to-maturity Securities, Less than 12 Months, Unrealized Losses |
|
38
|
| Held-to-maturity Securities, 12 Months or More, Fair Value |
|
|
| Held-to-maturity Securities, 12 Months or More, Unrealized Losses |
|
|
| Held-to-maturity Securities, Total Fair Value |
|
1,996
|
| Held-to-Maturity Securities, Gross Unrealized Losses |
|
38
|
| Available-for-sale Securities, Less than 12 Months, Fair Value |
|
498
|
| Available-for-sale Securities, Less than 12 Months, Unrealized Losses |
|
1
|
| Available-for-sale Securities, 12 Months or More, Fair Value |
|
|
| Available-for-sale Securities, 12 Months or More, Unrealized Losses |
|
|
| Available-for-sale Securities, Total Fair Value |
|
498
|
| Available-for-sale Securities, Total Unrealized Losses |
|
1
|
| Asset-backed Securities, Securitized Loans and Receivables [Member] |
|
|
| Available-for-sale Securities, Less than 12 Months, Fair Value |
1,482
|
|
| Available-for-sale Securities, Less than 12 Months, Unrealized Losses |
18
|
|
| Available-for-sale Securities, 12 Months or More, Fair Value |
|
|
| Available-for-sale Securities, 12 Months or More, Unrealized Losses |
|
|
| Available-for-sale Securities, Total Fair Value |
1,482
|
|
| Available-for-sale Securities, Total Unrealized Losses |
18
|
|
| Held-to-maturity Securities, Less than 12 Months, Fair Value |
|
5,956
|
| Held-to-maturity Securities, Less than 12 Months, Unrealized Losses |
|
54
|
| Held-to-maturity Securities, 12 Months or More, Fair Value |
|
|
| Held-to-maturity Securities, 12 Months or More, Unrealized Losses |
|
|
| Held-to-maturity Securities, Total Fair Value |
|
5,956
|
| Held-to-Maturity Securities, Gross Unrealized Losses |
|
54
|
| Available-for-sale Securities, Less than 12 Months, Fair Value |
5,131
|
29,104
|
| Available-for-sale Securities, Less than 12 Months, Unrealized Losses |
56
|
129
|
| Available-for-sale Securities, 12 Months or More, Fair Value |
|
3,654
|
| Available-for-sale Securities, 12 Months or More, Unrealized Losses |
|
59
|
| Available-for-sale Securities, Total Fair Value |
5,131
|
32,758
|
| Available-for-sale Securities, Total Unrealized Losses |
$ 56
|
$ 188
|