| Temporary Equity Disclosure [Abstract] | Period [Axis] |
|---|
2015-01-01 - 2015-12-31 |
|---|
Temporary Equity Disclosure [Abstract] | |
Warrants outstanding |
Exercise
Price |
|
Number
Outstanding |
|
Warrants Outstanding
Weighted Average
Remaining Contractual
Life (years) |
|
Weighted
Average
Exercise price |
|
Number
Exercisable |
|
Warrants Exercisable
Weighted
Average
Exercise Price |
| $ |
1.00 |
|
|
|
60,100 |
|
|
|
2.81 |
|
|
$ |
1.00 |
|
|
|
60,100 |
|
|
$ |
1.00 |
|
| |
2.00 |
|
|
|
60,200 |
|
|
|
3.81 |
|
|
|
2.00 |
|
|
|
60,200 |
|
|
|
2.00 |
|
| |
|
|
|
|
120,300 |
|
|
|
3.31 |
|
|
|
1.50 |
|
|
|
120,300 |
|
|
$ |
1.50 |
|
|
Transactions involving warrant issuance |
| |
|
Number of
Shares |
|
Weighted
Average
Price Per Share |
| |
Outstanding at December 31, 2013 |
|
|
|
100,100 |
|
|
$ |
0.65 |
|
| |
Issued |
|
|
|
60,200 |
|
|
|
2.00 |
|
| |
Exercised |
|
|
|
(40,000 |
) |
|
|
(0.13 |
) |
| |
Expired |
|
|
|
— |
|
|
|
— |
|
| |
Outstanding at December 31, 2014 |
|
|
|
120,300 |
|
|
$ |
1.50 |
|
| |
Issued |
|
|
|
— |
|
|
|
— |
|
| |
Exercised |
|
|
|
— |
|
|
|
— |
|
| |
Expired |
|
|
|
— |
|
|
|
— |
|
| |
Outstanding at December 31, 2015 |
|
|
|
120,300 |
|
|
$ |
1.50 |
|
|
Significant assumptions used to determine fair value of warrants | | Significant assumptions: |
|
|
|
| Risk-free interest rate at grant date |
|
|
0.95% to 1.78 |
% |
| Expected stock price volatility |
|
|
86.22% to 400.79 |
% |
| Expected dividend payout |
|
|
— |
|
| Expected option life-years (a) |
|
|
3.81 to 4.56 |
|
__________________________
(a) The expected option life is based on contractual expiration
dates |
Options outstanding, shares issued to employees under stock option plan |
| |
Options Outstanding |
|
|
|
Options Exercisable |
|
| |
Exercise
Prices (S) |
|
|
|
Number
Outstanding |
|
|
|
Weighted Average
Remaining
Contractual Life
(Years) |
|
|
|
Weighted
Average
Exercise
Price (S) |
|
|
|
Number
Exercisable |
|
|
|
Weighted
Average
Exercise
Price |
|
| $ |
0.80 |
|
|
|
85,000 |
|
|
|
5.20 |
|
|
$ |
0.80 |
|
|
|
85,000 |
|
|
$ |
0.80 |
|
| |
1.00 |
|
|
|
649,875 |
|
|
|
1.45 |
|
|
|
1.00 |
|
|
|
591,646 |
|
|
|
1.00 |
|
| |
1.11 |
|
|
|
100,000 |
|
|
|
5.00 |
|
|
|
1.11 |
|
|
|
100,000 |
|
|
|
1.11 |
|
| |
1.25 |
|
|
|
600,000 |
|
|
|
5.67 |
|
|
|
1.25 |
|
|
|
150,000 |
|
|
|
1.25 |
|
| |
2.25 |
|
|
|
162,696 |
|
|
|
2.40 |
|
|
|
2.25 |
|
|
|
162,696 |
|
|
|
2.25 |
|
| |
|
|
|
|
1,597,571 |
|
|
|
3.55 |
|
|
$ |
1.22 |
|
|
|
1,089,342 |
|
|
$ |
1.22 |
|
|
Transactions involving employee stock options issued |
| |
|
Number of Shares |
|
Weighted Average
Price Per Share |
| Outstanding at December 31, 2013: |
|
|
1,879,571 |
|
|
$ |
0.90 |
|
| Granted |
|
|
— |
|
|
|
— |
|
| Exercised |
|
|
(400,000 |
) |
|
|
(0.15 |
) |
| Canceled or expired |
|
|
(40,000 |
) |
|
|
(1.00 |
) |
| Outstanding at December 31, 2014 |
|
|
1,439,571 |
|
|
$ |
1.10 |
|
| Granted |
|
|
600,000 |
|
|
|
1.25 |
|
| Exercised |
|
|
— |
|
|
|
— |
|
| Expired |
|
|
(442,000 |
) |
|
|
(0.88 |
) |
| Outstanding at December 31, 2015: |
|
|
1,597,571 |
|
|
$ |
1.22 |
|
|
Significant assumptions used to determine fair value of employee options | | Significant assumptions: |
|
|
|
| Risk-free interest rate at grant date |
|
|
|
1.61% to 2.12 |
% |
| Expected stock price volatility |
|
|
|
186.74 |
% |
| Expected dividend payout |
|
|
|
— |
|
| Expected option life-years (a) |
|
|
3.75 to 6.25 |
|
__________________________
(a) The expected option life is based on “simplified”
method. |
Options outstanding, shares issued to non-employees under stock option plan |
| |
Options Outstanding |
|
|
|
Options Exercisable |
|
| |
Exercise
Prices |
|
|
|
Number
Outstanding |
|
|
|
Weighted Average
Remaining
Contractual Life
(Years) |
|
|
|
Weighted
Average
Exercise
Price |
|
|
|
Number
Exercisable |
|
|
|
Weighted
Average
Exercise
Price |
|
| $ |
1.00 |
|
|
|
255,000 |
|
|
|
4.32 |
|
|
$ |
1.00 |
|
|
|
208,125 |
|
|
$ |
1.00 |
|
| |
1.40 |
|
|
|
105,000 |
|
|
|
3.23 |
|
|
|
1.40 |
|
|
|
105,000 |
|
|
|
1.40 |
|
| |
|
|
|
|
360,000 |
|
|
|
4.00 |
|
|
$ |
1.12 |
|
|
|
313,125 |
|
|
$ |
1.13 |
|
|
Transactions involving non-employee stock options issued |
| |
|
Number of Shares |
|
Weighted Average
Price Per Share |
| |
Outstanding at December 31, 2013: |
|
|
|
365,000 |
|
|
$ |
1.12 |
|
| |
Granted |
|
|
|
— |
|
|
|
— |
|
| |
Exercised |
|
|
|
— |
|
|
|
— |
|
| |
Expired |
|
|
|
— |
|
|
|
— |
|
| |
Outstanding at December 31, 2014: |
|
|
|
365,000 |
|
|
$ |
1.12 |
|
| |
Granted |
|
|
|
— |
|
|
|
— |
|
| |
Exercised |
|
|
|
— |
|
|
|
— |
|
| |
Expired |
|
|
|
(5,000 |
) |
|
|
(1.00 |
) |
| |
Outstanding at December 31, 2015: |
|
|
|
360,000 |
|
|
$ |
1.12 |
|
|
Significant assumptions used to determine fair values of non-employee options |
| Significant assumptions: |
|
|
|
| Risk-free interest rate at grant date |
|
|
1.71% to 2.09 |
% |
| Expected stock price volatility |
|
|
86.22% to 400.79 |
% |
| Expected dividend payout |
|
|
— |
|
| Expected option life-years (a) |
|
|
7.24 to 7.99 |
|
|