|
Consolidated Statements of Stockholders' Equity (USD $)
|
Total
|
Common Stock [Member]
|
Additional Paid-in Capital [Member]
|
Accumulated Deficit [Member]
|
| Balance at Dec. 31, 2011 |
$ 17,892,303 |
$ 1,215 |
$ 31,996,560 |
$ (14,105,472) |
| Balance, shares at Dec. 31, 2011 |
|
12,149,061 |
|
|
| Exercise of stock options |
31,081 |
3 |
31,078 |
|
| Exercise of stock options, shares |
|
33,270 |
|
|
| Share-based compensation |
295,106 |
|
295,106 |
|
| Conversion of convertible notes in private placement |
15,356,422 |
242 |
15,356,180 |
|
| Conversion of convertible notes in private placement, shares |
|
2,417,281 |
|
|
| Net loss |
(16,590,827) |
|
|
(16,590,827) |
| Balance at Dec. 31, 2012 |
16,984,085 |
1,460 |
47,678,924 |
(30,696,299) |
| Balance, shares at Dec. 31, 2012 |
|
14,599,612 |
|
|
| Exercise of stock options |
332,938 |
51 |
332,887 |
|
| Exercise of stock options, shares |
514,466 |
514,466 |
|
|
| Share-based compensation |
391,393 |
|
391,393 |
|
| Conversion of convertible notes in private placement |
701,723 |
11 |
701,712 |
|
| Conversion of convertible notes in private placement, shares |
|
110,446 |
|
|
| Private placement of common stock |
39,963,500 |
692 |
39,962,808 |
|
| Private placement of common stock, shares |
|
6,916,697 |
|
|
| Stock subscription |
109,834 |
2 |
109,832 |
|
| Stock subscription, shares |
|
18,225 |
|
|
| Net loss |
(26,868,198) |
|
|
(26,868,198) |
| Balance at Dec. 31, 2013 |
$ 31,615,275 |
$ 2,216 |
$ 89,177,556 |
$ (57,564,497) |
| Balance, shares at Dec. 31, 2013 |
|
22,159,446 |
|
|