Note 4 - Loans (Details Textual) xbrli-pure in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Financing Receivable, Modifications, Number of Contracts | 0 | 0 |
| Unpaid Recourse Receivables [Member] | ||
| Threshold Period Past Due for Write-off of Financing Receivable | 90 days | |
| Non-recourse Receivables [Member] | ||
| Threshold Period Past Due for Write-off of Financing Receivable | 120 days | |