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STOCKHOLDERS' EQUITY (Tables)
6 Months Ended
Jun. 30, 2019
Equity [Abstract]  
Schedule Of Stock Options Activity

The following table summarizes stock option activity for the six months ended June 30, 2019:

 

 

 

Number of shares

 

 

Weighted- average exercise price

 

 

Weighted- average Contractual Term

 

 

Aggregate

Intrinsic Value

 

 

 

 

 

 

 

 

 

 

 

 

  (in years)  

 

 

 

 

 

Outstanding at December 31, 2018

 

 

1,916,900

 

 

$

6.50

 

 

 

9.75

 

 

$

 

Granted

 

 

740,000

 

 

 

6.90

 

 

 

 

 

 

 

 

 

Exercised

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Forfeited

 

 

(113,190

)

 

 

6.33

 

 

 

 

 

 

 

 

 

Expired

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Outstanding at June 30, 2019

 

 

2,543,710

 

 

$

6.63

 

 

 

9.39

 

 

$

5,684,217

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Expected to vest at June 30, 2019

 

 

2,543,710

 

 

$

6.63

 

 

 

9.39

 

 

$

5,684,217

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Exercisable at June 30, 2019

 

 

 

 

$

 

 

 

--

 

 

$

 

Schedule of Fair Value Assumptions

The fair value of the Company’s option awards granted during the six months ended June 30, 2019 and 2018 were estimated on the grant date using the Black-Scholes option-pricing model using the assumptions below:

 

 

 

Six months ended

 

 

 

June 30, 2019

 

 

June 30, 2018

 

Volatility

 

 

172.99-291.61

 

 

 

186.99-305.77

 

Expected term (in years)

 

 

5.0-6.25

 

 

 

5.0-6.25

 

Risk-free rate

 

 

1.96-2.49

%

 

 

2.56-2.72

%

Expected dividend yield

 

 

%

 

 

--

%

Schedule of Nonvested Restricted Stock Units Activity

The following table summarizes restricted share activity for the six months ended June 30, 2019:

 

 

 

Number of Shares

 

 

Weighted Average Grant

Date Fair Value

 

Outstanding at December 31, 2018

 

 

6,095,692

 

 

$

8.07

 

Granted

 

 

1,268,080

 

 

 

12.95

 

Vested

 

 

(620,527

)

 

 

8.91

 

Forfeited

 

 

(106,046

)

 

 

7.82

 

Outstanding at June 30, 2019

 

 

6,637,199

 

 

$

7.76

 

Schedule of Stock-Based Compensation

The following table summarizes stock-based compensation expense information about restricted stock and stock options for the three and six months ended June 30, 2019:

 

(in thousands)

 

Three months ended June 30, 2019

 

 

Six months ended June 30, 2019

 

Stock-based compensation expense associated with restricted stock

 

$

950

 

 

$

2,127

 

Stock-based compensation expense associated with option grants

 

 

807

 

 

 

1,512

 

Total

 

$

1,757

 

 

$

3,639

 

Schedule of Warrant Activity

The following table summarizes warrant activity for the six months ended June 30, 2019:

 

 

 

Warrants

 

 

Weighted-average exercise price

 

 

Aggregate Intrinsic Value

 

Outstanding at December 31, 2018

 

 

 

 

$

--

 

 

$

--

 

Issued

 

 

147,058

 

 

 

4.08

 

 

 

 

 

Exercised

 

 

 

 

 

--

 

 

 

 

 

Expired

 

 

 

 

 

--

 

 

 

 

 

Outstanding at June 30, 2019

 

 

147,058

 

 

$

4.08

 

 

$

672,055