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Note 5 - Earnings Per Share | 6 Months Ended
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Jun. 30, 2016
Notes to Financial Statements |
Earnings Per Share [Text Block] | NOTE 5 - EARNINGS PER SHARE The following information was used in the computation of EPS on a basic and diluted basis:
|  | Three months ended |  |  | Six months ended |
|  | June 30, |  |  | June 30, |
|  | 2016 |  |  | 2015 |  |  | 2016 |  |  | 2015 |
Net income (loss) |  | $ | 6,676,467 |  |  | $ | (523,818 | ) |  | $ | 13,049,956 |  |  | $ | 3,654,071 |
Basic EPS |  | $ | 0.54 |  |  | $ | (0.05 | ) |  | $ | 1.08 |  |  | $ | 0.41 |
Diluted EPS |  | $ | 0.53 |  |  | $ | (0.05 | ) |  | $ | 1.07 |  |  | $ | 0.40 |
Weighted average common shares outstanding* |  |  | 12,335,077 |  |  |  | 9,946,744 |  |  |  | 12,064,349 |  |  |  | 8,961,327 |
Weighted average common shares issuable upon exercise of stock options and under the employee stock purchase plan** |  |  | 181,397 |  |  |  | - |  |  |  | 170,863 |  |  |  | 137,370 |
Weighted average common and common equivalent shares outstanding** |  |  | 12,516,474 |  |  |  | 9,946,744 |  |  |  | 12,235,212 |  |  |  | 9,098,697 |
*The increase in the weighted average common shares outstanding was primarily due to the common stock issuance discussed in Note 9 to the Consolidated Financial Statements.
**In accordance with U.S. GAAP, the common equivalent shares are not considered in the calculation of diluted EPS in periods when the numerator is a net loss.

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