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11. STOCK-BASED COMPENSATION | 12 Months Ended
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Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
STOCK-BASED COMPENSATION | Stock Incentive Plans Options We have one long-term equity incentive plan which we refer to as the 2006 Equity Incentive Plan, which we amended and restated as of April 20, 2015 (the “Restated Plan”). The Restated Plan was approved by our stockholders at our annual stockholders meeting on June 11, 2015. As of December 31, 2015, we have reserved for issuance under the Restated Plan 12,000,000 shares of common stock. We can issue options, stock awards, stock appreciation rights and cash awards under the Restated Plan. Certain options granted under the Restated Plan to employees are intended to qualify as incentive stock options under existing tax regulations. Stock options generally vest over two to five years and expire five to ten years from the date of grant. As of December 31, 2015, we had outstanding options to acquire 931,667 shares of our Common Stock, of which options to acquire 918,334 shares were exercisable. During the twelve months ended December 31, 2015, we did not grant any stock options under our Restated Plan. The following summarizes all of our option transactions during the year ended December 31, 2015:
Outstanding Options Under the 2006 Plan |  | Shares |  |  | Weighted Average Exercise price Per Common Share |  |  | Weighted Average Remaining Contractual Life (in years) |  |  | Aggregate Intrinsic Value |
Balance, December 31, 2014 |  |  | 2,092,509 |  |  | $ | 3.58 |  |  |  |  |  |  |  |  |
Exercised |  |  | (1,135,833 | ) |  |  | 2.69 |  |  |  |  |  |  |  |  |
Canceled, forfeited or expired |  |  | (25,009 | ) |  |  | 2.22 |  |  |  |  |  |  |  |  |
Balance, December 31, 2015 |  |  | 931,667 |  |  |  | 4.69 |  |  |  | 0.82 |  |  | $ | 2,109,751 |
Exercisable at December 31, 2015 |  |  | 918,334 |  |  |  | 4.73 |  |  |  | 0.79 |  |  |  | 2,054,551 |
Aggregate intrinsic value in the table above represents the total pretax intrinsic value (the difference between our closing stock price on December 31, 2015 and the exercise price, multiplied by the number of in-the-money options as applicable) that would have been received by the holder had all holders exercised their options on December 31, 2015. Total intrinsic value of options exercised during the year ended December 31, 2015 and 2014 was approximately $6.2 million and $7.3 million, respectively. As of December 31, 2015, total unrecognized stock-based compensation expense related to non-vested employee awards was $9,815, which is expected to be recognized over a weighted average period of approximately 0.87 years. Restricted Stock Awards (“RSA’s”) The Restated Plan permits the award of restricted stock awards (“RSA’s”). As of December 31, 2015, we have issued a total of 3,461,208 RSA’s of which 771,342 were unvested at December 31, 2015. The following summarizes all unvested RSA’s activities during the year ended December 31, 2015:
|  |  |  |  | Weighted-Average |  |  |  |
|  |  |  |  | Remaining |  |  |  |
|  |  |  |  | Contractual |  |  | Weighted-Average |
|  | RSA's |  |  | Term (Years) |  |  | Fair Value |
RSA's unvested at December 31, 2014 |  |  | 942,024 |  |  |  |  |  |  | $ | 1.96 |
Changes during the period |  |  |  |  |  |  |  |  |  |  |  |
Granted |  |  | 744,423 |  |  |  |  |  |  | $ | 8.60 |
Vested |  |  | (856,052 | ) |  |  |  |  |  | $ | 4.59 |
Forfeited |  |  | (59,053 | ) |  |  |  |  |  | $ | 5.59 |
RSA's unvested at December 31, 2015 |  |  | 771,342 |  |  |  | 0.71 |  |  | $ | 5.17 |
We determine the fair value of all RSA’s based of the closing price of our common stock on award date. Other stock bonus awards The Restated Plan also permits the award of stock bonuses not subject to any future service period. These awards are valued and expensed based on the closing price of our common stock on the date of award. During the year ended December 31, 2015 we issued 170,000 shares relating to these awards. In sum, of the 12,000,000 shares of common stock reserved for issuance under the Restated Plan, at December 31, 2015, we had issued 11,059,958 total shares between options, RSA’s and other stock awards. With options cancelled and RSA’s forfeited amounting to 2,825,009 and 59,053 shares, respectively, there remain 3,824,104 shares available under the Restated Plan for future issuance.

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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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