Note 9 - Property and Equipment (Details Textual) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Property, Plant and Equipment, Gross | $ 1,206,058 | $ 3,232,372 | |
| Depreciation, Depletion and Amortization | 232,339 | 496,178 | $ 562,468 |
| Disposal Group, Including Discontinued Operation, Property, Plant and Equipment, Noncurrent | 70,973 | ||
| Assets Held under Capital Leases [Member] | |||
| Property, Plant and Equipment, Gross | $ 0 | $ 0 | |
| X | ||||||||||
- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount classified as property, plant and equipment attributable to disposal group held for sale or disposed of, expected to be disposed of after one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Details
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