Note 7 - Accounts and Other Receivables and Concentrations of Credit Risk (Details Textual) - USD ($) |
Dec. 31, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Allowance for Doubtful Accounts Receivable, Current | $ 0 | $ 0 |
| Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net | $ 1,598,994 | $ 3,692,747 |
| X | ||||||||||
- Definition A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount classified as accounts, notes and loans receivable attributable to disposal group held for sale or disposed of. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|