Stockholders' Equity (Tables)
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6 Months Ended |
12 Months Ended |
Jun. 30, 2015 |
Dec. 31, 2014 |
| Schedule of Warrants Outstanding [Table Text Block] |
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|
June 30, |
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|
2015 |
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|
2014 |
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|
Issued to Investors on July 28, 2010, entitling the holders to purchase
1,034,996
common shares in the Company at an exercise price of $9.00
per common share up to and including July 27, 2017
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|
1,034,996
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|
1,034,996
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|
| |
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|
|
|
|
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|
Issued to Investors on October 25, 2013, entitling the holders to purchase
1,250,000
common shares in the Company at an exercise price of $2.30
per common share up to and including April 24, 2021
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|
1,117,178
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|
1,250,000
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|
| |
|
|
|
|
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Issued to Investors on November 17, 2014, entitling the holders to purchase
2,734,590
common shares in the Company at an exercise price of $2.31
per common share up to and including May 16, 2022
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|
2,734,590
|
|
|
-
|
|
| |
|
|
|
|
|
|
| Total |
|
4,886,764
|
|
|
2,284,996
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|
| Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
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Weighted |
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Weighted |
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Average |
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Average |
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Options |
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Exercise |
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Grant Date Fair |
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Outstanding |
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Price |
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Value |
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| Beginning of the period |
|
2,026,564
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|
$ |
9.19
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|
$ |
10.61
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|
| Granted |
|
1,333,056
|
|
$ |
1.26
|
|
$ |
0.88
|
|
| Exercised |
|
-
|
|
|
-
|
|
|
-
|
|
| Forfeited |
|
(114,407
|
) |
$ |
6.63
|
|
$ |
6.06
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|
| Expired |
|
-
|
|
$ |
-
|
|
$ |
-
|
|
| End of the period |
|
3,245,213
|
|
$ |
6.03
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|
$ |
5.42
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| |
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|
|
|
|
|
|
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| Options exercisable |
|
2,312,149
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|
$ |
7.80
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|
$ |
7.15
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|
|
| |
|
|
|
|
Weighted |
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|
Weighted |
|
| |
|
|
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|
Average |
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|
Average |
|
| |
|
Options |
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|
Exercise |
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|
Grant Date Fair |
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| |
|
Outstanding |
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Price |
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Value |
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| |
|
|
|
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|
|
|
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| |
|
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| Beginning of the year |
|
1,564,257
|
|
$ |
11.16
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|
$ |
10.61
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| Granted |
|
579,429
|
|
$ |
2.55
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|
$ |
1.79
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| Exercised |
|
-
|
|
|
-
|
|
|
-
|
|
| Forfeited |
|
(117,122
|
) |
$ |
2.55
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|
$ |
1.79
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| Expired |
|
-
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|
$ |
-
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|
$ |
-
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|
| End of the year |
|
2,026,564
|
|
$ |
9.19
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|
$ |
10.61
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|
| |
|
|
|
|
|
|
|
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|
| Options exercisable |
|
1,564,257
|
|
$ |
11.16
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|
$ |
10.61
|
|
|
| Schedule of Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] |
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|
Stock Options Outstanding |
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Stock Options Vested |
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Weighted |
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Weighted |
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Average |
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Average |
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Remaining |
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Weighted |
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|
Remaining |
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Weighted |
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| |
|
Contractual |
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Number |
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Average |
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Contractual |
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|
Number |
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Average |
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| |
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Life |
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of |
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|
Exercise |
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|
Life |
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|
of |
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|
Exercise |
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| |
|
-Years |
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|
Awards |
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|
Price |
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|
-Years |
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|
Awards |
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|
Price |
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| Exercise Prices |
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$1.12
- $5.00
|
|
7.81
|
|
|
1,978,700
|
|
$ |
1.86
|
|
|
7.59
|
|
|
1,045,636
|
|
$ |
2.07
|
|
|
$5.01
- $12.90
|
|
3.55
|
|
|
668,177
|
|
$ |
7.59
|
|
|
3.55
|
|
|
668,177
|
|
$ |
7.59
|
|
|
$13.50
-$18.90
|
|
0.81
|
|
|
358,336
|
|
$ |
14.17
|
|
|
0.81
|
|
|
358,336
|
|
$ |
14.17
|
|
|
$19.20
-$23.85
|
|
0.63
|
|
|
240,000
|
|
$ |
23.85
|
|
|
0.63
|
|
|
240,000
|
|
$ |
23.85
|
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| Total |
|
5.63
|
|
|
3,245,213
|
|
$ |
6.03
|
|
|
4.65
|
|
|
2,312,149
|
|
$ |
7.80
|
|
|
| |
|
Stock Options Outstanding |
|
|
Stock Options Vested |
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| |
|
Weighted |
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|
|
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|
|
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|
Weighted |
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|
|
|
|
|
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| |
|
Average |
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|
Average |
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|
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| |
|
Remaining |
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|
|
|
|
Weighted |
|
|
Remaining |
|
|
|
|
|
Weighted |
|
| |
|
Contractual |
|
|
Number |
|
|
Average |
|
|
Contractual |
|
|
Number |
|
|
Average |
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| |
|
Life |
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|
of |
|
|
Exercise |
|
|
Life |
|
|
of |
|
|
Exercise |
|
| |
|
-Years |
|
|
Awards |
|
|
Price |
|
|
-Years |
|
|
Awards |
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|
Price |
|
| Exercise Prices |
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$2.55
- $5.00
|
|
4.26
|
|
|
645,644
|
|
$ |
3.10
|
|
|
4.06
|
|
|
183,337
|
|
$ |
4.50
|
|
|
$5.01
- $12.90
|
|
4.11
|
|
|
782,584
|
|
$ |
7.45
|
|
|
4.11
|
|
|
782,584
|
|
$ |
7.45
|
|
|
$13.50
-$18.90
|
|
1.30
|
|
|
358,336
|
|
$ |
14.17
|
|
|
1.30
|
|
|
358,336
|
|
$ |
14.17
|
|
|
$19.20
-$23.85
|
|
1.12
|
|
|
240,000
|
|
$ |
23.85
|
|
|
1.12
|
|
|
240,000
|
|
$ |
23.85
|
|
| Total |
|
3.31
|
|
|
2,026,564
|
|
$ |
9.19
|
|
|
3.00
|
|
|
1,564,257
|
|
$ |
11.16
|
|
|
| Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
| |
|
Six Months |
|
|
|
|
| |
|
ended |
|
|
Year ended |
|
| |
|
June 30, |
|
|
December 31, |
|
| |
|
2015 |
|
|
2014 |
|
| |
|
|
|
|
|
|
| Average risk-free interest rate |
|
1.46%
|
|
|
1.68%
|
|
| Average expected life- years |
|
5.5
|
|
|
5.0
|
|
| Expected volatility |
|
86.78%
|
|
|
90.44%
|
|
| Expected dividends |
|
0
|
|
|
0
|
|
|
|