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Note 15 - Restatement to Previously Issued Condensed Consolidated Financial Statements (Tables) | 12 Months Ended
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Dec. 31, 2018
Notes Tables |
Schedule of Error Corrections and Prior Period Adjustments [Table Text Block] |
|  | For the Three Months Ended June 30, 2018 |  |  | For the Six Months Ended June 30, 2018 |
|  | Previously Reported |  |  | Restated |  |  | Previously Reported |  |  | Restated |
Deemed dividend attributable to preferred stock |  | $ | (4,782,100 | ) |  | $ | (11,479,308 | ) |  | $ | (4,782,100 | ) |  | $ | (11,479,308 | )
Net loss applicable to common stockholders |  | $ | (8,924,677 | ) |  | $ | (15,621,885 | ) |  | $ | (10,799,059 | ) |  | $ | (17,496,267 | )
Loss per common share -basic and diluted |  | $ | (2.90 | ) |  | $ | (5.08 | ) |  | $ | (3.77 | ) |  | $ | (6.11 | )
|  | Preferred Stock Additional Paid-in Capital |  |  | Common Stock Additional Paid-in Capital |
|  | Previously Reported |  |  | Restated |  |  | Previously Reported |  |  | Restated |
Issuance of Series B convertible preferred stock, net of issuance costs |  | $ | 12,290,537 |  |  | $ | 6,926,778 |  |  | $ | 0 |  |  | $ | 5,363,759 |
Deemed Dividend on Series B convertible preferred stock |  | $ | 4,782,100 |  |  | $ | 11,479,308 |  |  | $ | (4,782,100 | ) |  | $ | (11,479,308 | )
Conversion of Series B convertible preferred stock to common stock |  | $ | (7,056,421 | ) |  | $ | (7,821,992 | ) |  | $ | 6,656,442 |  |  | $ | 7,422,013 |

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- Definition Tabular disclosure of prior period adjustments to previously issued financial statements including (1) the effect of the correction on each financial statement line item and any per-share amounts affected for each prior period presented (2) the cumulative effect of the change on retained earnings or other appropriate components of equity or net assets in the statement of financial position, as of the beginning of the earliest period presented, and (3) the effect of the prior period adjustments (both gross and net of applicable income tax) on the net income of each prior period presented in the entity's annual report for the year in which the adjustments are made. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22663-107794 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22644-107794 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22658-107794 + Details
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