Note 9 - Fair Value Measurement - Quantitative Information About Level 3 Fair Value Measurements for Financial Instruments Measured at Fair Value on a Non-Recurring Basis (Details) - USD ($)
$ in Thousands |
9 Months Ended |
12 Months Ended |
Sep. 30, 2016 |
Dec. 31, 2015 |
| Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | Impaired Loans [Member] | Weighted Average [Member] |
|
|
| Impaired loans, other real estate - unobservable input range |
12.00%
|
10.00%
|
| Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | Impaired Loans [Member] | Minimum [Member] |
|
|
| Impaired loans, other real estate - unobservable input range |
|
9.00%
|
| Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | Impaired Loans [Member] | Maximum [Member] |
|
|
| Impaired loans, other real estate - unobservable input range |
|
12.00%
|
| Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | Impaired Loans [Member] |
|
|
| Impaired loans, other real estate |
$ 451
|
$ 1,214
|
| Impaired loans, other real estate - unobservable input range |
12.00%
|
|
| Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | Other Real Estate [Member] | Weighted Average [Member] |
|
|
| Impaired loans, other real estate - unobservable input range |
20.00%
|
10.00%
|
| Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | Other Real Estate [Member] |
|
|
| Impaired loans, other real estate |
$ 1,000
|
$ 156
|
| Impaired loans, other real estate - unobservable input range |
20.00%
|
10.00%
|
| Commercial Portfolio Segment [Member] | Construction Loans [Member] | Impaired Loans [Member] | Weighted Average [Member] |
|
|
| Impaired loans, other real estate - unobservable input range |
10.00%
|
8.00%
|
| Commercial Portfolio Segment [Member] | Construction Loans [Member] | Impaired Loans [Member] |
|
|
| Impaired loans, other real estate |
$ 22
|
$ 30
|
| Impaired loans, other real estate - unobservable input range |
10.00%
|
8.00%
|
| Commercial Portfolio Segment [Member] | Construction Loans [Member] | Other Real Estate [Member] | Weighted Average [Member] |
|
|
| Impaired loans, other real estate - unobservable input range |
25.00%
|
10.00%
|
| Commercial Portfolio Segment [Member] | Construction Loans [Member] | Other Real Estate [Member] | Minimum [Member] |
|
|
| Impaired loans, other real estate - unobservable input range |
10.00%
|
|
| Commercial Portfolio Segment [Member] | Construction Loans [Member] | Other Real Estate [Member] | Maximum [Member] |
|
|
| Impaired loans, other real estate - unobservable input range |
36.00%
|
|
| Commercial Portfolio Segment [Member] | Construction Loans [Member] | Other Real Estate [Member] |
|
|
| Impaired loans, other real estate |
$ 1,517
|
$ 1,516
|
| Impaired loans, other real estate - unobservable input range |
|
10.00%
|
| Commercial Portfolio Segment [Member] | Impaired Loans [Member] |
|
|
| Impaired loans, other real estate |
|
|
| Commercial Portfolio Segment [Member] | Other Real Estate [Member] |
|
|
| Impaired loans, other real estate |
|
|
| Consumer Portfolio Segment [Member] | Home Equity Loan [Member] | Impaired Loans [Member] | Weighted Average [Member] |
|
|
| Impaired loans, other real estate - unobservable input range |
8.00%
|
8.00%
|
| Consumer Portfolio Segment [Member] | Home Equity Loan [Member] | Impaired Loans [Member] |
|
|
| Impaired loans, other real estate |
$ 83
|
$ 83
|
| Impaired loans, other real estate - unobservable input range |
8.00%
|
8.00%
|
| Consumer Portfolio Segment [Member] | Home Equity Loan [Member] | Other Real Estate [Member] | Weighted Average [Member] |
|
|
| Impaired loans, other real estate - unobservable input range |
|
10.00%
|
| Consumer Portfolio Segment [Member] | Home Equity Loan [Member] | Other Real Estate [Member] |
|
|
| Impaired loans, other real estate |
|
$ 84
|
| Impaired loans, other real estate - unobservable input range |
|
10.00%
|
| Impaired Loans [Member] |
|
|
| Impaired loans, other real estate |
$ 556
|
$ 1,327
|
| Other Real Estate [Member] |
|
|
| Impaired loans, other real estate |
2,517
|
1,756
|
| Impaired loans, other real estate |
$ 3,073
|
$ 3,083
|