|
Consolidated Statements of Changes in Stockholders' Equity (USD $)
|
Total
|
Common Stock [Member]
|
Additional Paid-in Capital [Member]
|
Retained Earnings [Member]
|
| Balance at Dec. 31, 2011 |
$ 1,301,800 |
$ 446 |
$ 42,462,554 |
$ (41,161,200) |
| Balance (in shares) at Dec. 31, 2011 |
|
4,455,790 |
|
|
| Net income (loss) |
3,886,905 |
0 |
0 |
3,886,905 |
| Stock-based compensation |
127,488 |
0 |
127,488 |
0 |
| Balance at Dec. 31, 2012 |
5,316,193 |
446 |
42,590,042 |
(37,274,295) |
| Balance (in shares) at Dec. 31, 2012 |
|
4,455,790 |
|
|
| Net income (loss) |
(10,590,106) |
0 |
0 |
(10,590,106) |
| Stock-based compensation |
979,151 |
0 |
979,151 |
0 |
| Option exercises |
10,575 |
0 |
10,575 |
0 |
| Option exercises (in shares) |
3,761 |
3,761 |
|
|
| Vesting of restricted stock awards |
0 |
1 |
(1) |
0 |
| Vesting of restricted stock awards (in shares) |
|
7,763 |
|
|
| Repurchase and retirement of common stock |
(53,100) |
(1) |
(53,099) |
0 |
| Repurchase and retirement of common stock (in shares) |
|
(8,626) |
|
|
| Issuance of common stock in private offering |
35,709,645 |
634 |
35,709,011 |
0 |
| Issuance of common stock in private offering (in shares) |
|
6,336,664 |
|
|
| Issuance of common stock in offering |
12,537,943 |
172 |
12,537,771 |
0 |
| Issuance of common stock in offering (in shares) |
|
1,715,800 |
|
|
| Common stock issued in reverse merger |
|
5,000 |
|
|
| Issuance of common stock for termination of certain rights in stock purchase agreement |
913,446 |
15 |
913,431 |
0 |
| Issuance of common stock for termination of certain rights in stock purchase agreement (in shares) |
|
152,241 |
|
|
| Balance at Dec. 31, 2013 |
$ 44,823,747 |
$ 1,267 |
$ 92,686,881 |
$ (47,864,401) |
| Balance (in shares) at Dec. 31, 2013 |
|
12,668,393 |
|
|