Stockholders' Equity (Tables)
|
6 Months Ended |
12 Months Ended |
Jun. 30, 2016 |
Dec. 31, 2015 |
Equity [Abstract] |
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|
Schedule of assumptions used in calculating the fair value of the warrants |
|
Assumptions
used in calculating the fair value of the warrants are as follows:
|
December
31, |
|
2015 |
2014 |
Dividend yield |
0% |
0% |
Expected volatility |
47.17%
48.83% |
39.3%
100.0% |
Risk free interest
rates |
0.855%
1.0775% |
0.67%
1.12% |
Expected remaining
term (in years) |
1.51
2.07 |
2.51
3.07 |
|
Schedule of fair value of liabilities measured on recurring basis |
|
The
fair values and the changes in fair values of the warrants accounted for as derivative liabilities are reflected below:
Balance,
December 31, 2013 |
|
$ |
3,747,858 |
|
Gain
on change in fair value for the year ended December 31, 2014 |
|
|
(1,549,696 |
) |
Balance, December
31, 2014 |
|
|
2,198,162 |
|
Gain
on change in fair value for the year ended December 31, 2015 |
|
|
(1,539,876 |
) |
Balance,
December 31, 2015 |
|
$ |
658,286 |
|
|
Schedule of compensation stock option activity |
Activity
under all of the Companys Plans during the six months ended June 30, 2016 is summarized below:
|
|
|
Shares |
|
|
Weighted
Average Exercise Price |
|
Outstanding
at December 31, 2015 |
|
|
|
298,282 |
|
|
|
48.80 |
|
Granted |
|
|
|
11,500 |
|
|
|
11.57 |
|
Forfeited |
|
|
|
(2,250 |
) |
|
|
43.04 |
|
Outstanding at June
30, 2016 |
|
|
|
307,532 |
|
|
|
49.18 |
|
|
Activity
with respect to stock options issued by the Company is summarized as follows:
|
|
Options
Outstanding |
|
|
Options
Exercisable |
|
|
Range
of Exercise Prices |
|
|
|
|
|
|
Weighted-
average Exercise price per share |
|
Intrinsic
Value (1) |
Outstanding
at December 31, 2013 |
|
|
185,755 |
|
|
|
|
|
|
$ |
35.20 |
|
|
|
|
|
$ |
385.60 |
|
|
$ |
58.80 |
|
$ |
1,493,368 |
Exercisable
at December 31, 2013 |
|
|
|
|
|
|
110,407 |
|
|
$ |
35.20 |
|
|
|
|
|
$ |
385.60 |
|
|
$ |
67.20 |
|
$ |
566,589 |
Activity
during the year ended |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
December
31, 2014 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Granted |
|
|
82,112 |
|
|
|
|
|
|
$ |
32.00 |
|
|
|
|
|
$ |
58.40 |
|
|
$ |
43.60 |
|
|
|
Exercised |
|
|
(4,062 |
) |
|
|
|
|
|
$ |
35.20 |
|
|
|
|
|
$ |
35.20 |
|
|
$ |
35.20 |
|
|
|
Cancelled
or forfeited |
|
|
(5,222 |
) |
|
|
|
|
|
$ |
35.20 |
|
|
|
|
|
$ |
385.60 |
|
|
$ |
56.80 |
|
|
|
Outstanding
at December 31, 2014 |
|
|
258,583 |
|
|
|
|
|
|
$ |
32.00 |
|
|
|
|
|
$ |
385.60 |
|
|
$ |
54.40 |
|
$ |
4,800 |
Exercisable
at December 31, 2014 |
|
|
|
|
|
|
140,687 |
|
|
$ |
40.00 |
|
|
|
|
|
$ |
385.60 |
|
|
$ |
62.40 |
|
$ |
600 |
Activity
during the year ended |
|
|
|
|
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|
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|
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|
|
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|
December
31, 2015 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Granted |
|
|
61,912 |
|
|
|
|
|
|
$ |
29.60 |
|
|
|
|
|
$ |
42.40 |
|
|
$ |
32.80 |
|
|
|
Exercised |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
Cancelled
or forfeited |
|
|
(22,212 |
) |
|
|
|
|
|
$ |
32.00 |
|
|
|
|
|
$ |
128.00 |
|
|
$ |
59.20 |
|
|
|
Outstanding
at December 31, 2015 |
|
|
298,283 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ |
48.80 |
|
|
|
Exercisable
at December 31, 2015 |
|
|
|
|
|
|
179,215 |
|
|
|
|
|
|
|
|
|
|
|
|
|
$ |
56.40 |
|
|
|
|
(1) |
Intrinsic value
is calculated as the estimated fair value of the Companys stock at the end of the related period less the option exercise
price of in-the-money options. |
|
Schedule of stock options by exercise price range |
|
The
following table summarizes information about stock options at December 31, 2015 (contractual life expressed in years):
|
|
|
|
|
|
|
|
|
Options
Outstanding |
|
|
Options
Exercisable |
|
Range
of Exercise Prices |
|
|
Number
Outstanding |
|
|
Weighted
Average Remaining Contractual Life |
|
|
Weighted
Average Exercise Price |
|
|
Number
Exercisable |
|
|
Weighted
Average Remaining Contractual Life |
|
|
Weighted
Average Exercise Price |
|
|
$29.60 |
|
|
- |
|
|
|
|
$45.20 |
|
|
|
202,101 |
|
|
|
8.14 |
|
|
$ |
39.20 |
|
|
|
91,335 |
|
|
|
6.87 |
|
|
$ |
40.80 |
|
|
$46.40 |
|
|
- |
|
|
|
|
$83.60 |
|
|
|
94,777 |
|
|
|
6.19 |
|
|
$ |
67.60 |
|
|
|
86,477 |
|
|
|
5.87 |
|
|
$ |
68.80 |
|
|
$128.00 |
|
|
- |
|
|
|
|
$385.60 |
|
|
|
1,403 |
|
|
|
2.61 |
|
|
$ |
318.00 |
|
|
|
1,403 |
|
|
|
2.61 |
|
|
$ |
318.00 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
298,281 |
|
|
|
|
|
|
|
|
|
|
|
179,215 |
|
|
|
|
|
|
|
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|
Schedule of summary of the status of the Company''s nonvested stock options |
|
A
summary of the status of the Companys nonvested stock options during the years ended December 31, 2015 and 2014 is presented
below:
Nonvested
Stock Options |
|
Shares |
|
Weighted
Average Grant Date Fair Value |
Nonvested January 1, 2014 |
|
|
75,348 |
|
|
$ |
22.40 |
|
Activity during the year ended December 31,
2014 |
|
|
|
|
|
|
|
|
Granted |
|
|
82,112 |
|
|
$ |
25.20 |
|
Forfeited |
|
|
(1,160 |
) |
|
$ |
30.40 |
|
Vested |
|
|
(38,405 |
) |
|
$ |
23.20 |
|
Nonvested December 31, 2014 |
|
|
117,895 |
|
|
$ |
20.80 |
|
Activity during the year ended December 31,
2015 |
|
|
|
|
|
|
|
|
Granted |
|
|
61,912 |
|
|
$ |
18.80 |
|
Forfeited |
|
|
(2,562 |
) |
|
$ |
23.60 |
|
Vested |
|
|
(58,178 |
) |
|
$ |
21.20 |
|
Nonvested December 31, 2015 |
|
|
119,067 |
|
|
$ |
18.80 |
|
|
Schedule of share based payment award stock option valuation assumptions |
The
estimated grant date fair values of options granted during the three months ended June 30, 2016 were calculated using the Black-Scholes
valuation model, based on the following assumptions:
Dividend
yield |
0% |
Expected
volatility |
49.86%
- 50.69% |
Risk
free interest rates |
1.23%
- 1.38% |
Expected
lives (in years) |
6 |
|
The
assumptions used in calculating the fair value under the Black-Scholes option-pricing model are as follows:
|
Years
Ended December 31, |
|
2015 |
2014 |
Dividend
yield |
0% |
0% |
Expected
Volatility Risk |
46.67%
to 47.93% |
49.4%
to 51.8% |
free
Interest rates |
1.48%
to 1.80% |
1.73%
to 2.71% |
Expected
lives (in years) |
6.0 |
5.5
- 6.0 |
|
Schedule of share-based compensation expense |
The
Company records share-based compensation expense on a straight-line basis over the related vesting period. For the three and six
months ended June 30, 2016 and 2015, share-based compensation expense related to options was:
Three
Months Ended June 30, |
2016 |
|
2015 |
$
238,312 |
|
$
774,417 |
|
|
|
Six
Months Ended June 30, |
2016 |
|
2015 |
$
498,881 |
|
$
1,152,309 |
|
|
Schedule of stockholders' equity note warrants or rights |
Warrants
have generally been issued for terms of up to five years. Common stock warrant activity for the six months ended June 30, 2016
was as follows:
|
|
|
Shares |
|
|
Weighted
Average Exercise Price |
|
Outstanding
at December 31, 2015 |
|
|
|
845,402 |
|
|
$ |
19.20 |
|
Issues |
|
|
|
69,517 |
|
|
|
40.00 |
|
Terminated |
|
|
|
-- |
|
|
|
-- |
|
Outstanding at June
30, 2016 |
|
|
|
914,920 |
|
|
$ |
25.85 |
|
|
Warrants
have generally been issued in connection with financing transactions and for terms of up to five years. Common stock warrant activity
for the years ended December 31, 2015 and 2014 is as follows:
|
|
|
Shares |
|
Weighted
Average Exercise Price |
Outstanding
at December 31, 2013 |
|
|
|
303,421 |
|
|
$ |
31.60 |
(1) |
Issued
during the year ended December 31, 2014 |
|
|
|
215,556 |
|
|
$ |
39.20 |
|
Outstanding at December
31, 2014 |
|
|
|
518,977 |
|
|
$ |
32.00 |
(1) |
Activity during the
year ended December 31, 2015 |
|
|
|
|
|
|
|
|
|
Issued |
|
|
|
327,060 |
|
|
$ |
18.00 |
|
Terminated |
|
|
|
(636 |
) |
|
$ |
320.00 |
|
Outstanding at December
31, 2015 |
|
|
|
845,401 |
|
|
$ |
26.40 |
|
|
(1) |
The weighted-average exercise price reflects
exercise prices adjustments triggered by the December 2014 and December 2015 Private Placements described above. |
|
Schedule of information regarding outstanding warrants |
|
Information
regarding outstanding warrants at December 31, 2015 is as follows (contractual life expressed in years):
Exercise
Price |
|
Number
Outstanding |
|
Weighted
Average Remaining Contractual Life |
|
Intrinsic
Value |
$ |
12.80 |
|
|
|
115,021 |
|
|
|
2.07 |
|
|
$ |
276,051 |
|
$ |
16.40 |
|
|
|
203,865 |
|
|
|
4.98 |
|
|
$ |
|
|
$ |
21.20 |
|
|
|
122,319 |
|
|
|
4.98 |
|
|
$ |
|
|
$ |
24.00 |
|
|
|
11,474 |
|
|
|
1.15 |
|
|
$ |
|
|
$ |
30.00 |
|
|
|
64,443 |
|
|
|
1.11 |
|
|
$ |
|
|
$ |
34.40 |
|
|
|
185,800 |
|
|
|
3.98 |
|
|
$ |
|
|
$ |
37.60 |
|
|
|
68,181 |
|
|
|
1.50 |
|
|
$ |
|
|
$ |
38.80 |
|
|
|
8,589 |
|
|
|
1.50 |
|
|
$ |
|
|
$ |
40.00 |
|
|
|
34,875 |
|
|
|
1.42 |
|
|
$ |
|
|
$ |
70.00 |
|
|
|
30,831 |
|
|
|
1.51 |
|
|
$ |
|
|
|
|
|
|
|
845,398 |
|
|
|
3.43 |
|
|
$ |
276,051 |
|
|
(1) |
Intrinsic value is calculated as the estimated
fair value of the Companys stock at December 31, 2015 less the warrant exercise price of in-the-money warrants. |
|