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Stock-Based Compensation | 9 Months Ended
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Sep. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Stock-Based Compensation | Stock-Based Compensation We maintain a stock-based compensation program intended to attract, retain and provide incentives for talented employees and directors and align stockholder and employee interests. Currently, we grant options and restricted stock units ("RSUs") from the 2010 Equity Compensation Plan (“2010 ECP”) and 2017 Equity Compensation Plan ("2017 ECP"). Option and RSUs vesting periods are generally up to three years and/or achieving certain financial targets. Compensation Expense For the three and nine months ended September 30, 2018, we recorded stock-based compensation expense for all equity incentive plans of $159,799 and $827,595, respectively. For the three and nine months ended September 30, 2017, we recorded stock-based compensation expense for all equity incentive plans of $336,913 and $923,072, respectively. Total compensation cost not yet recognized at September 30, 2018 was $1,138,696 to be recognized over a weighted-average recognition period of 1.7 years. The following table summarizes the stock grants outstanding under our 2005 Long-Term Incentive Plan ("2005 LTIP"), the 2010 ECP and the 2017 ECP as of September 30, 2018:
| Options Outstanding |  | RSUs Outstanding |  | Options and RSUs Exercised |  | Available Shares |  | Total
2017 ECP | — |  | 733,500 |  | 41,664 |  | 1,374,836 |  | 2,150,000
2010 ECP | 250,498 |  | 910,449 |  | 3,380,919 |  | 290,152 |  | 4,832,018
2005 LTIP (*) | 13,748 |  | — |  | 950,085 |  | — |  | 963,833
Total | 264,246 |  | 1,643,949 |  | 4,372,668 |  | 1,664,988 |  | 7,945,851
(*) Expired June 2015 The following table summarizes the activities of stock option awards under the 2005 LTIP and the 2010 ECP as of September 30, 2018:
| Shares Subject to Options Outstanding |  |  |  |  |  |
| Number of Shares |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Term (in years) |  | Aggregate Intrinsic Value
Balance as of December 31, 2017 | 264,246 |  | $ | 2.84 |  | 2.7 |  | $ | 2,019
Stock options exercised | — |  | $ | — |  | — |  | —
Balance as of September 30, 2018 | 264,246 |  | $ | 2.84 |  | 2.7 |  | $ | 2,019
Stock options exercisable as of September 30, 2018 | 264,246 |  | $ | 2.84 |  | 2.7 |  | $ | 2,019
The following table summarizes the activities for our unvested RSUs for the nine months ended September 30, 2018:
| Unvested RSUs |  |
| Number of Shares |  | Weighted Average Grant Date Fair Value
Unvested as of December 31, 2017 | 1,071,538 |  | $ | 1.84
Granted | 1,664,266 |  | $ | 0.76
Vested | 641,843 |  | $ | 2.26
Forfeited | 450,012 |  | $ | 1.05
Unvested as of September 30, 2018 | 1,643,949 |  | $ | 0.80

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -URI http://asc.fasb.org/subtopic&trid=2208855 + Details
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