Note 5 - Allowance for Loan Losses (Details Textual)
|
3 Months Ended |
12 Months Ended |
|
|
|
|
Mar. 31, 2016 |
Dec. 31, 2015
USD ($)
|
Dec. 31, 2014
USD ($)
|
Dec. 31, 2016
USD ($)
|
Sep. 30, 2016
USD ($)
|
Jun. 30, 2015
USD ($)
|
Dec. 31, 2013
USD ($)
|
| Allowance for Loan Losses, Loss History Period, Number of Quarters |
16
|
8
|
8
|
|
|
|
|
| Allowance for Credit Losses, Change in Method of Calculating Impairment |
|
|
|
$ 804,000
|
|
$ 1,621,424
|
|
| Loan Balance For Reviewing High Risk Loans Minimum |
|
|
|
|
$ 250,000
|
|
|
| Loans and Leases Receivable, Gross |
|
$ 758,635,595
|
$ 746,093,809
|
754,283,563
|
|
|
|
| Loans and Leases Receivable, Allowance |
|
8,603,905
|
8,802,316
|
$ 8,923,293
|
|
|
$ 11,805,986
|
| Impaired Financing Receivable, Number of Loans Below Review Threshold |
|
|
|
160
|
|
|
|
| Impaired Financing Receivable Recorded Investment Below Review Threshold |
|
3,744,733
|
$ 3,885,411
|
$ 4,204,156
|
|
|
|
| Substandard [Member] |
|
|
|
|
|
|
|
| Loans and Leases Receivable, Gross |
|
32,397,170
|
|
26,787,938
|
|
|
|
| Loans Not Classified as Impaired [Member] | Substandard [Member] |
|
|
|
|
|
|
|
| Loans and Leases Receivable, Gross |
|
11,155,813
|
|
10,786,699
|
|
|
|
| Loans and Leases Receivable, Allowance |
|
$ 276,731
|
|
$ 632,706
|
|
|
|