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STOCK OPTION PLANS (Tables) | 12 Months Ended
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Dec. 31, 2017
Equity Incentive Plan 2015 [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Summarized information of stock options | Summarized information for the 2015 Equity Incentive Plan is as follows:
|  |  |  | Weighted- |
|  |  |  | average |
|  |  |  | exercise |
|  | Options |  | price |
Outstanding options at January 1, 2016 |  |  | 1,994,000 |  | $ | 6.90 |
Granted, fair value of $2.59 per share |  |  | 2,622,500 |  |  | 3.29 |
Exercised |  |  | (151,000) |  |  | 2.32 |
Expired/forfeited |  |  | (22,500) |  |  | 3.23 |
Outstanding options at December 31, 2016 |  |  | 4,443,000 |  |  | 4.94 |
Granted, fair value of $11.35 per share |  |  | 1,077,000 |  |  | 14.31 |
Exercised |  |  | (81,719) |  |  | 4.22 |
Expired/forfeited |  |  | (325,314) |  |  | 5.52 |
Outstanding options at December 31, 2017 |  |  | 5,112,967 |  |  | 9.07 |
Exercisable at December 31, 2017 |  |  | 2,471,135 |  |  | 5.48 |
Options vested during the twelve months ended December 31, 2017 |  |  | 1,143,448 |  |  | 4.19 |
Non-vested options at December 31, 2016 |  |  | 3,115,313 |  |  | 4.24 |
Non-vested options at December 31, 2017 |  |  | 2,641,832 |  |  | 8.21 |
Information regarding options outstanding by range of exercise prices | Further information regarding options outstanding under the 2015 Equity Incentive Plan at December 31, 2015 is summarized below:
|  | Number of |  | Weighted average |  | Number of |  | Weighted-average |
|  | options |  | Remaining |  | Exercise |  | Options |  | Remaining |  | Exercise |
Range of exercise prices |  | outstanding |  | life in years |  | Price |  | exercisable |  | life in years |  | price |
$2.31 – 4.45 |  |  | 2,723,092 |  |  | 8.9 |  | $ | 3.64 |  |  | 1,137,177 |  |  | 8.9 |  | $ | 3.31 |
$7.34 |  |  | 1,497,875 |  |  | 8.0 |  | $ | 7.34 |  |  | 1,333,958 |  |  | 8.0 |  | $ | 7.34 |
$16.00 – 16.70 |  |  | 892,000 |  |  | 10.0 |  | $ | 16.06 |  |  | - |  |  | 10.0 |  |  | - |
|  |  | 5,112,967 |  |  |  |  |  |  |  |  | 2,471,135 |  |  |  |  |  |  |
Equity Incentive Plan 2005 [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Summarized information of stock options | Summarized information for the 2005 Equity Incentive Plan is as follows:
|  |  |  | Weighted- |
|  |  |  | average |
|  |  |  | exercise |
|  | Options |  | price |
Outstanding options at January 1, 2016 |  |  | 330,084 |  | $ | 13.49 |
Expired/forfeited |  |  | (1,524) |  |  | 36.93 |
Outstanding options at December 31, 2016 |  |  | 328,560 |  |  | 14.57 |
Expired/forfeited |  |  | (11,800) |  |  | 21.53 |
Outstanding options at December 31, 2017 |  |  | 316,760 |  |  | 14.31 |
Exercisable at December 31, 2017 |  |  | 316,760 |  |  | 14.31 |
Information regarding options outstanding by range of exercise prices | Further information regarding options outstanding under the 2005 Equity Incentive Plan at December 31, 2017 is summarized below:
|  | Number of |  | Weighted average |  | Number of |  | Weighted-average |
|  | options |  | Remaining |  | Exercise |  | options |  | Remaining |  | Exercise |
Range of exercise prices |  | outstanding |  | life in years |  | price |  | exercisable |  | life in years |  | price |
$3.25 |  |  | 120,000 |  |  | 3.0 |  | $ | 3.25 |  |  | 120,000 |  |  | 3.0 |  | $ | 3.25 |
$11.50 - 18.50 |  |  | 189,000 |  |  | 7.0 |  | $ | 18.35 |  |  | 189,000 |  |  | 7.0 |  | $ | 18.35 |
$30.50 – 150.00 |  |  | 7,760 |  |  | 3.2 |  | $ | 86.79 |  |  | 7,760 |  |  | 3.2 |  | $ | 86.79 |
|  |  | 316,760 |  |  |  |  |  |  |  |  | 316,760 |  |  |  |  |  |  |

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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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