Stockholders' Equity (Tables)
|
3 Months Ended |
12 Months Ended |
Mar. 31, 2015 |
Dec. 31, 2014 |
| Schedule of Warrants Outstanding [Table Text Block] |
| |
|
March 31, |
|
| |
|
2015 |
|
|
2014 |
|
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
|
|
1,034,996
|
|
|
1,034,996
|
|
| |
|
|
|
|
|
|
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
|
|
1,117,178
|
|
|
1,250,000
|
|
| |
|
|
|
|
|
|
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
|
|
2,734,590
|
|
|
-
|
|
| |
|
|
|
|
|
|
| Total |
|
4,886,764
|
|
|
2,284,996
|
|
|
|
| Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
| |
|
|
|
|
Weighted |
|
|
Weighted |
|
| |
|
|
|
|
Average |
|
|
Average |
|
| |
|
Options |
|
|
Exercise |
|
|
Grant Date Fair |
|
| |
|
Outstanding |
|
|
Price |
|
|
Value |
|
| |
|
|
|
|
|
|
|
|
|
| Beginning of the year |
|
2,026,564
|
|
$ |
9.19
|
|
$ |
10.61
|
|
| Granted |
|
-
|
|
|
-
|
|
|
-
|
|
| Exercised |
|
-
|
|
|
-
|
|
|
-
|
|
| Forfeited |
|
(114,407
|
) |
$ |
6.63
|
|
$ |
6.06
|
|
| Expired |
|
-
|
|
$ |
-
|
|
$ |
-
|
|
| End of period |
|
1,912,157
|
|
$ |
9.35
|
|
$ |
8.58
|
|
| |
|
|
|
|
|
|
|
|
|
| Options exercisable |
|
1,449,850
|
|
$ |
11.52
|
|
$ |
10.77
|
|
|
| |
|
|
|
|
Weighted |
|
|
Weighted |
|
| |
|
|
|
|
Average |
|
|
Average |
|
| |
|
Options |
|
|
Exercise |
|
|
Grant Date Fair |
|
| |
|
Outstanding |
|
|
Price |
|
|
Value |
|
| |
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
| Beginning of the year |
|
1,564,257
|
|
$ |
9.19
|
|
$ |
10.61
|
|
| Granted |
|
579,429
|
|
$ |
2.55
|
|
$ |
1.79
|
|
| Exercised |
|
-
|
|
|
-
|
|
|
-
|
|
| Forfeited |
|
(117,122
|
) |
$ |
2.55
|
|
$ |
1.79
|
|
| Expired |
|
-
|
|
$ |
-
|
|
$ |
-
|
|
| End of year |
|
2,026,564
|
|
$ |
9.19
|
|
$ |
10.61
|
|
| |
|
|
|
|
|
|
|
|
|
| Options exercisable |
|
1,564,257
|
|
$ |
11.16
|
|
$ |
10.61
|
|
|
| Schedule of Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] |
| |
|
Stock Options Outstanding |
|
|
Stock Options Vested |
|
| |
|
Weighted |
|
|
|
|
|
|
|
|
Weighted |
|
|
|
|
|
|
|
| |
|
Average |
|
|
|
|
|
|
|
|
Average |
|
|
|
|
|
|
|
| |
|
Remaining |
|
|
|
|
|
Weighted |
|
|
Remaining |
|
|
|
|
|
Weighted |
|
| |
|
Contractual |
|
|
Number |
|
|
Average |
|
|
Contractual |
|
|
Number |
|
|
Average |
|
| |
|
Life |
|
|
of |
|
|
Exercise |
|
|
Life |
|
|
of |
|
|
Exercise |
|
| |
|
-Years |
|
|
Awards |
|
|
Price |
|
|
-Years |
|
|
Awards |
|
|
Price |
|
| Exercise Prices |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$2.55
- $5.00
|
|
4.01
|
|
|
645,644
|
|
$ |
3.10
|
|
|
3.81
|
|
|
183,337
|
|
$ |
4.50
|
|
|
$5.01
- $12.90
|
|
3.80
|
|
|
668,177
|
|
$ |
7.59
|
|
|
3.80
|
|
|
668,177
|
|
$ |
7.59
|
|
|
$13.50
-$18.90
|
|
1.06
|
|
|
358,336
|
|
$ |
14.17
|
|
|
1.06
|
|
|
358,336
|
|
$ |
14.17
|
|
|
$19.20
-$23.85
|
|
0.88
|
|
|
240,000
|
|
$ |
23.85
|
|
|
0.88
|
|
|
240,000
|
|
$ |
23.85
|
|
| Total |
|
2.99
|
|
|
1,912,157
|
|
$ |
9.35
|
|
|
2.64
|
|
|
1,449,850
|
|
$ |
11.52
|
|
|
| |
|
Stock Options Outstanding |
|
|
Stock Options Vested |
|
| |
|
Weighted |
|
|
|
|
|
|
|
|
Weighted |
|
|
|
|
|
|
|
| |
|
Average |
|
|
|
|
|
|
|
|
Average |
|
|
|
|
|
|
|
| |
|
Remaining |
|
|
|
|
|
Weighted |
|
|
Remaining |
|
|
|
|
|
Weighted |
|
| |
|
Contractual |
|
|
Number |
|
|
Average |
|
|
Contractual |
|
|
Number |
|
|
Average |
|
| |
|
Life |
|
|
of |
|
|
Exercise |
|
|
Life |
|
|
of |
|
|
Exercise |
|
| |
|
-Years |
|
|
Awards |
|
|
Price |
|
|
-Years |
|
|
Awards |
|
|
Price |
|
| Exercise Prices |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$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] |
| |
Year ended |
Year ended |
| |
12/31/2014 |
12/31/2011 |
| |
|
|
| Average risk-free interest rate |
1.68%
|
3.35%
|
| Average expected life- years |
5
|
10
|
| Expected volatility |
90.44%
|
94.32%
|
| Expected dividends |
0
|
0
|
|
|