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STOCK OPTIONS | 9 Months Ended
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Sep. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
STOCK OPTIONS | STOCK OPTIONS Stock Options. The following table summarizes stock option activity during the nine months ended September 30, 2015:
| Number of Options |  | Weighted-Average Exercise Price
Outstanding at January 1, 2015 | 685,984 |  |  | $ | 6.56 |
Granted | 641,560 |  |  | 1.51 |
Forfeited | (39,469 | ) |  | 4.88 |
Expired | (88,361 | ) |  | 10.60 |
Outstanding at September 30, 2015 | 1,199,714 |  |  | $ | 3.62 |
Exercisable at September 30, 2015 | 325,111 |  |  | $ | 6.68 |
During the nine months ended September 30, 2015, we granted options to purchase 641,560 shares of our common stock at a weighted-average exercise price of $1.51 per share under our 2006 Equity Incentive Plan, as amended (the “Plan”). Options to purchase an aggregate of 237,546 shares of our common stock were granted during the nine months ended September 30, 2014. As of September 30, 2015, there were 325,111 options exercisable and 981,938 options were vested or expected to vest with an aggregate intrinsic value of zero. Stock Appreciation Rights (“SARs”) The following table summarizes SARs activity under the Plan during the nine months ended September 30, 2015:
| Number of SARs |  | Weighted-Average Exercise Price
Outstanding at January 1, 2015 | 98,333 |  |  | $ | 4.14 |
Outstanding at September 30, 2015 | 98,333 |  |  | $ | 4.14 |
Exercisable at September 30, 2015 | 55,833 |  |  | $ | 4.32 |
All outstanding SARs were issued solely to our executive officers. As of September 30, 2015, 55,833 shares subject to outstanding SARs were exercisable and 98,333 shares were vested or expected to vest. The weighted-average exercise price of these SARs was $4.14 per share and the aggregate intrinsic value was zero.

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- Definition The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=51659978&loc=d3e25284-112666 Reference 3: 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=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 + Details
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