Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans - Allowance for Loan Losses (Details) - USD ($) |
3 Months Ended | 9 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
Dec. 31, 2015 |
|
| Real Estate Construction Portfolio Segment[Member] | |||||
| Balance | $ 576,000 | $ 612,000 | $ 612,000 | ||
| Charge-offs | (29,000) | 0 | 0 | ||
| Recoveries | 0 | 0 | 0 | ||
| Provision for loan losses | (43,000) | (77,000) | (36,000) | ||
| Balance | $ 504,000 | $ 535,000 | 504,000 | 535,000 | 576,000 |
| Consumer Real Estate Portfolio Segment [Member] | |||||
| Balance | 1,866,000 | 1,662,000 | 1,662,000 | ||
| Charge-offs | (131,000) | (201,000) | (205,000) | ||
| Recoveries | 2,000 | 1,000 | 2,000 | ||
| Provision for loan losses | 111,000 | 332,000 | 407,000 | ||
| Balance | 1,848,000 | 1,794,000 | 1,848,000 | 1,794,000 | 1,866,000 |
| Commercial Real Estate Portfolio Segment [Member] | |||||
| Balance | 4,109,000 | 3,537,000 | 3,537,000 | ||
| Charge-offs | (149,000) | (155,000) | (1,114,000) | ||
| Recoveries | 71,000 | 36,000 | 49,000 | ||
| Provision for loan losses | (525,000) | 420,000 | 1,637,000 | ||
| Balance | 3,506,000 | 3,838,000 | 3,506,000 | 3,838,000 | 4,109,000 |
| Commercial Non Real Estate Segment [Member] | |||||
| Balance | 655,000 | 1,475,000 | 1,475,000 | ||
| Charge-offs | (767,000) | (453,000) | (490,000) | ||
| Recoveries | 6,000 | 1,000 | 1,000 | ||
| Provision for loan losses | 1,493,000 | (153,000) | (331,000) | ||
| Balance | 1,387,000 | 870,000 | 1,387,000 | 870,000 | 655,000 |
| Public Sector and IDA Portfolio Segment[Member] | |||||
| Balance | 436,000 | 327,000 | 327,000 | ||
| Charge-offs | 0 | 0 | 0 | ||
| Recoveries | 0 | 0 | 0 | ||
| Provision for loan losses | (66,000) | 170,000 | 109,000 | ||
| Balance | 370,000 | 497,000 | 370,000 | 497,000 | 436,000 |
| Consumer Non Real Estate Portfolio Segment [Member] | |||||
| Balance | 627,000 | 602,000 | 602,000 | ||
| Charge-offs | (191,000) | (193,000) | (311,000) | ||
| Recoveries | 44,000 | 84,000 | 93,000 | ||
| Provision for loan losses | 152,000 | 21,000 | 243,000 | ||
| Balance | 632,000 | 514,000 | 632,000 | 514,000 | 627,000 |
| Unallocated Financing Receivables [Member] | |||||
| Balance | 28,000 | 48,000 | 48,000 | ||
| Charge-offs | 0 | 0 | 0 | ||
| Recoveries | 0 | 0 | 0 | ||
| Provision for loan losses | 26,000 | 21,000 | (20,000) | ||
| Balance | 54,000 | 69,000 | 54,000 | 69,000 | 28,000 |
| Balance | 8,297,000 | 8,263,000 | 8,263,000 | ||
| Charge-offs | (1,267,000) | (1,002,000) | (2,120,000) | ||
| Recoveries | 123,000 | 122,000 | 145,000 | ||
| Provision for loan losses | 291,000 | 178,000 | 1,148,000 | 734,000 | 2,009,000 |
| Balance | $ 8,301,000 | $ 8,117,000 | $ 8,301,000 | $ 8,117,000 | $ 8,297,000 |