Stockholders' Equity (Tables)
|
3 Months Ended |
12 Months Ended |
Mar. 31, 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 at March 31, 2016 are as follows:
|
|
March
31, 2016 |
|
Dividend yield |
|
|
0% |
|
Expected volatility |
|
|
54.50% - 59.50% |
|
Risk free interest rates |
|
|
0.63% - 0.70% |
|
Expected remaining term (in years) |
|
|
1.25 1.82 |
|
Assumptions
used in calculating the fair value of the warrants are as follows:
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|
|
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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 for the three months ended
March 31, 2016 are as follows:
Balance, December 31, 2015 |
|
|
$ |
658,286 |
|
Gain on change in fair value for the three months
ended March 31, 2016 |
|
|
|
(160,118 |
) |
Balance, March 31, 2016 |
|
|
$ |
(498,168 |
) |
|
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 equity compensation plans during the three months ended March 31, 2016 is summarized below:
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|
|
Shares |
|
|
Weighted
- Average Exercise Price |
|
Outstanding at December 31, 2015 |
|
|
|
397,710 |
|
|
$ |
36.60 |
|
Granted |
|
|
|
10,000 |
|
|
|
9.30 |
|
Forfeited |
|
|
|
(3,000 |
) |
|
|
32.40 |
|
Outstanding at March 31, 2016 |
|
|
|
404,710 |
|
|
$ |
36.00 |
|
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|
|
|
|
|
|
|
|
|
|
|
Activity
with respect to stock options issued by the Company is summarized as follows:
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|
Options
Outstanding |
|
|
Options
Exercisable |
|
|
Range
of Exercise Prices |
|
|
Weighted -average
Exercise price per share |
|
|
Intrinsic
Value (1) |
|
Outstanding
at December 31, 2013 |
|
|
247,674 |
|
|
|
|
|
|
$ |
26.40 |
|
$ |
289.20 |
|
|
$ |
44.10 |
|
|
$ |
1,493,368 |
|
Exercisable at December
31, 2013 |
|
|
|
|
|
|
147,209 |
|
|
$ |
26.40 |
|
$ |
289.20 |
|
|
$ |
50.40 |
|
|
$ |
566,589 |
|
Activity during
the year ended |
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December 31, 2014 |
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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Granted |
|
|
109,483 |
|
|
|
|
|
|
$ |
24.00 |
|
$ |
43.80 |
|
|
$ |
32.70 |
|
|
|
|
|
Exercised |
|
|
(5,416 |
) |
|
|
|
|
|
$ |
26.40 |
|
$ |
26.40 |
|
|
$ |
26.40 |
|
|
|
|
|
Cancelled
or forfeited |
|
|
(6,963 |
) |
|
|
|
|
|
$ |
26.40 |
|
$ |
289.20 |
|
|
$ |
42.60 |
|
|
|
|
|
Outstanding at December
31, 2014 |
|
|
344,778 |
|
|
|
|
|
|
$ |
24.00 |
|
$ |
289.20 |
|
|
$ |
40.80 |
|
|
$ |
4,800 |
|
Exercisable at December
31, 2014 |
|
|
|
|
|
|
187,583 |
|
|
$ |
30.00 |
|
$ |
289.20 |
|
|
$ |
46.80 |
|
|
$ |
600 |
|
Activity during
the year ended |
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|
December 31, 2015 |
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Granted |
|
|
82,550 |
|
|
|
|
|
|
$ |
22.20 |
|
$ |
31.80 |
|
|
$ |
24.60 |
|
|
|
|
|
Exercised |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
Cancelled
or forfeited |
|
|
(29,616 |
) |
|
|
|
|
|
$ |
24.00 |
|
$ |
96.00 |
|
|
$ |
44.40 |
|
|
|
|
|
Outstanding at December
31, 2015 |
|
|
397,712 |
|
|
|
|
|
|
|
|
|
|
|
|
|
$ |
36.60 |
|
|
|
|
|
Exercisable at December
31, 2015 |
|
|
|
|
|
|
238,954 |
|
|
|
|
|
|
|
|
|
$ |
42.30 |
|
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|
|
|
|
(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):
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Options
Outstanding |
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|
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 |
|
$22.20 |
- |
$33.90 |
|
|
|
269,468 |
|
|
|
8.14 |
|
|
$ |
29.40 |
|
|
|
121,780 |
|
|
|
6.87 |
|
|
$ |
30.60 |
|
$34.80 |
- |
$62.70 |
|
|
|
126,370 |
|
|
|
6.19 |
|
|
$ |
50.70 |
|
|
|
115,303 |
|
|
|
5.87 |
|
|
$ |
51.60 |
|
$96.00 |
- |
$289.20 |
|
|
|
1,870 |
|
|
|
2.61 |
|
|
$ |
238.50 |
|
|
|
1,870 |
|
|
|
2.61 |
|
|
$ |
238.50 |
|
|
|
|
|
|
|
397,708 |
|
|
|
|
|
|
|
|
|
|
|
238,953 |
|
|
|
|
|
|
|
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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 |
|
|
100,464 |
|
|
$ |
16.80 |
|
Activity during
the year ended December 31, 2014 |
|
|
|
|
|
|
|
|
Granted |
|
|
109,483 |
|
|
$ |
18.90 |
|
Forfeited |
|
|
(1,547 |
) |
|
$ |
22.80 |
|
Vested |
|
|
(51,207 |
) |
|
$ |
17.40 |
|
Nonvested December
31, 2014 |
|
|
157,193 |
|
|
$ |
15.60 |
|
Activity during
the year ended December 31, 2015 |
|
|
|
|
|
|
|
|
Granted |
|
|
82,550 |
|
|
$ |
14.10 |
|
Forfeited |
|
|
(3,416 |
) |
|
$ |
17.70 |
|
Vested |
|
|
(77,571 |
) |
|
$ |
15.90 |
|
Nonvested December
31, 2015 |
|
|
158,756 |
|
|
$ |
14.10 |
|
|
Schedule of share based payment award stock option valuation assumptions |
The
estimated grant date fair values of options granted during the three months ended March 31, 2016 were calculated using the Black-Scholes
valuation model, based on the following assumptions:
Dividend yield |
|
|
0% |
|
Expected volatility |
|
|
49.86% |
|
Risk free interest rates |
|
|
1.38% |
|
Expected lives (in years) |
|
|
6.0 |
|
|
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 |
|
46.67% to 47.93% |
|
|
49.4% to 51.8% |
|
Risk 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 months
ended March 31, 2016 and 2015, share-based compensation expense related to options was:
|
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|
|
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|
Three
Months Ended March 31, |
|
2016 |
|
2015 |
|
$ |
260,149 |
|
$ |
367,309 |
|
|
|
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 three months ended March 31, 2016
was as follows:
|
|
|
Shares |
|
|
Weighted
- Average Exercise Price |
|
Outstanding at December 31, 2015 |
|
|
|
1,127,203 |
|
|
$ |
19.80 |
|
Issued |
|
|
|
|
|
|
|
|
|
Terminated |
|
|
|
|
|
|
|
|
|
Outstanding at March 31, 2016 |
|
|
|
1,127,203 |
|
|
$ |
19.80 |
|
|
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 |
|
|
404,562 |
|
|
$ |
23.70 |
(1) |
Issued during
the year ended December 31, 2014 |
|
|
287,409 |
|
|
$ |
29.40 |
|
Outstanding at December 31, 2014 |
|
|
691.971 |
|
|
$ |
24.00 |
(1) |
Activity during the year ended December 31,
2015 |
|
|
|
|
|
|
|
|
Issued |
|
|
436,080 |
|
|
$ |
13.50 |
|
Terminated |
|
|
(848 |
) |
|
$ |
240.00 |
|
Outstanding at December 31, 2015 |
|
|
1,127,203 |
|
|
$ |
19.80 |
|
|
(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 (1) |
|
$ |
9.60 |
|
|
|
153,361 |
|
|
2.07 |
|
|
$ |
276,051 |
|
$ |
12.30 |
|
|
|
271,820 |
|
|
4.98 |
|
|
$ |
|
|
$ |
15.90 |
|
|
|
163,092 |
|
|
4.98 |
|
|
$ |
|
|
$ |
18.00 |
|
|
|
15,299 |
|
|
1.15 |
|
|
$ |
|
|
$ |
22.50 |
|
|
|
85,925 |
|
|
1.11 |
|
|
$ |
|
|
$ |
25.80 |
|
|
|
247,734 |
|
|
3.98 |
|
|
$ |
|
|
$ |
28.20 |
|
|
|
90,909 |
|
|
1.50 |
|
|
$ |
|
|
$ |
29.10 |
|
|
|
11,452 |
|
|
1.50 |
|
|
$ |
|
|
$ |
30.00 |
|
|
|
46,500 |
|
|
1.42 |
|
|
$ |
|
|
$ |
52.50 |
|
|
|
41,108 |
|
|
1.51 |
|
|
$ |
|
|
|
|
|
|
|
1,127,203 |
|
|
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. |
|