Note 6 - Earnings Per Share - Calculation of Basic and Diluted (Loss) Per Share (Details) - USD ($) |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2016 |
Sep. 30, 2016 |
Jun. 30, 2016 |
Mar. 31, 2016 |
Dec. 31, 2015 |
Sep. 30, 2015 |
Jun. 30, 2015 |
Mar. 31, 2015 |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Net loss | $ (14,309,031) | $ (27,563,535) | $ (35,726,669) | ||||||||
| Less loss attributable to noncontrolling interest | (648) | (855) | |||||||||
| Deemed dividend on beneficial conversion feature of MT Preferred Stock | (46,000) | ||||||||||
| Net loss attributable to common stockholders | $ (3,882,000) | $ (59,000) | $ (6,681,000) | $ (3,686,000) | $ (2,510,000) | $ (8,071,000) | $ (9,691,000) | $ (7,337,000) | $ (14,308,383) | $ (27,608,680) | $ (35,726,669) |
| us-gaap_EarningsPerShareAbstract | |||||||||||
| Continuing operations (in dollars per share) | $ (0.05) | $ (0.15) | $ (0.20) | ||||||||
| Discontinued operations (in dollars per share) | (0.04) | (0.03) | (0.04) | ||||||||
| Attributable to common stockholders (in dollars per share) | $ (0.09) | $ (0.18) | $ (0.24) | ||||||||
| Weighted average shares outstanding (basic and diluted) (in shares) | 155,422,384 | 151,180,222 | 148,748,396 | ||||||||
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition The amount of net income (loss) from continuing operations per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Per basic share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation and gain (loss) from the disposal of the discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of Net Income (Loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition The aggregate value of preferred stock dividends and other adjustments necessary to derive net income apportioned to common stockholders. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS). No definition available.
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