v3.19.1

COMPENSATION PLANS (Tables) | 12 Months Ended
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Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule of non-vested restricted shares of common stock | A summary of all activity relating to our restricted shares for the year ended December 31, 2018, is presented below:
|  |  |  | Weighted Average Grant-Date Fair Value
|  | Shares |
Restricted shares of common stock, beginning of period |  | 3,163,903 |  |  | $ | 1.73 |
Granted with service only condition |  | 277,911 |  |  | $ | 4.16 |
Granted with service and performance conditions |  | 187,296 |  |  | $ | 3.91 |
Vested, service only condition |  | (1,112,256 | ) |  | $ | 2.14 |
Vested, service and market conditions |  | (71,251 | ) |  | $ | 2.10 |
Forfeited, service only condition |  | (305,002 | ) |  | $ | 1.67 |
Forfeited, service and market conditions |  | — |  |  | $ | — |
Forfeited, service and performance conditions |  | (187,296 | ) |  | $ | 3.91 |
Restricted shares of common stock, end of period |  | 1,953,305 |  |  | $ | 1.87 |
Summary of stock option activity | A summary of all stock option activity for the year ended December 31, 2018, is as follows:
|  | Shares |  | Weighted Average Exercise Price |  | Aggregate Intrinsic Value 1 |  | Weighted Average Remaining Contractual Life
Outstanding non-qualified stock options, beginning of period |  | 2,075,821 |  |  | $3.74 |  |  |  |
Granted |  | 1,558,185 |  |  | $3.90 |  |  |  |
Exercised |  | (95,004 | ) |  | $1.20 |  |  |  |
Forfeited |  | (174,025 | ) |  | $1.21 |  |  |  |
Expired |  | (13,293 | ) |  | $30.49 |  |  |  |
Outstanding non-qualified stock options, end of period |  | 3,351,684 |  |  | $3.91 |  | $1,810,165 |  | 8.2
Vested or expected to vest, end of period |  | 3,351,684 |  |  | $3.91 |  | $1,810,165 |  | 8.2
Exercisable non-qualified stock options, end of period |  | 876,084 |  |  | $6.44 |  | $845,691 |  | 6.4
Service And Market Condition Based Vesting [Member] | Stock Options [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule of stock options, valuation assumptions | Valuation models require the input of highly subjective assumptions, including the expected volatility of the price of the underlying stock. We used the following assumptions to compute the weighted average fair market value of options with service and market conditions granted in 2018 and 2017:
|  | 2018 |  | 2017 |  | 2016
Closing stock price on grant date |  | $ | 3.90 |  |  | $ | 2.29 |  |  | $ | 1.03 |
Risk free interest rate |  | 2.9 | % |  | 2.2 | % |  | 1.9 | %
Dividend yield |  | — | % |  | — | % |  | — | %
Estimated volatility |  | 75.0 | % |  | 81.7 | % |  | 86.2 | %
Expected life |  | 10.00 years |  |  | 10.00 years |  |  | 10.00 years |
Service And Market Condition Based Vesting [Member] | Restricted Shares [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule of stock options, valuation assumptions | Valuation models require the input of highly subjective assumptions, including the expected volatility of the price of the underlying stock. We used the following assumptions to compute the weighted-average grant date fair market value of restricted stock with service and market conditions granted in 2017 and 2016:
|  | 2017 |  | 2016
Closing stock price on grant date |  | $ | 2.29 |  |  | $ | 1.03 |
Risk free interest rate |  | 1.7 | % |  | 1.3 | %
Dividend yield |  | — | % |  | — | %
Estimated volatility |  | 81.7 | % |  | 86.2 | %
Expected life |  | 5.00 years |  |  | 5.00 years |
Service Based Vesting [Member] | Stock Options [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule of stock options, valuation assumptions | Option valuation models require the input of highly subjective assumptions, including the expected volatility of the price of the underlying stock. We used the following assumptions to compute the weighted average fair market value of options with service-based vesting granted in 2018, 2017 and 2016:
|  | 2018 |  | 2017 |  | 2016
Closing stock price on grant date |  | $ | 3.90 |  |  | $ | 2.29 |  |  | $ | 1.03 |
Risk free interest rate |  | 1.1 | % |  | 1.6 | % |  | 1.8 | %
Dividend yield |  | — | % |  | — | % |  | — | %
Estimated volatility |  | 72.8 | % |  | 71.5 | % |  | 63.8 | %
Expected option life |  | 6.00 years |  |  | 6.00 years |  |  | 6.25 years |

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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