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Consolidated Statements of Equity (USD $) In Thousands, except Share data | Total | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | Noncontrolling Interest [Member]
--- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2011 | $ 7,059 | $ 31 | $ 58,901 | $ (51,873) | $ 0
Balance (in shares) at Dec. 31, 2011 |  | 31,292,520 |  |  |
Stock-based compensation | 1,852 | 0 | 1,852 | 0 | 0
Issuance of common stock for exclusive channel collaboration agreement | 7,814 | 3 | 7,811 | 0 | 0
Issuance of common stock for exclusive channel collaboration agreement (in shares) |  | 3,552,210 |  |  |
Issuance of common stock for acquisition of program assets | 1,169 | 1 | 1,168 | 0 | 0
Issuance of common stock for acquisition of program assets (in shares) |  | 625,000 |  |  |
Issuance of common stock for stock options and warrants exercised | 2,082 | 2 | 2,080 | 0 | 0
Issuance of common stock for stock options and warrants exercised (in shares) |  | 2,143,018 |  |  |
Issuance of common stock, net of issuance costs | 10,120 | 7 | 10,113 | 0 | 0
Issuance of common stock, net of issuance costs (in shares) |  | 6,750,000 |  |  |
Net loss | (17,068) | 0 | 0 | (17,068) | 0
Balance at Dec. 31, 2012 | 13,028 | 44 | 81,925 | (68,941) | 0
Balance (in shares) at Dec. 31, 2012 |  | 44,362,748 |  |  |
Stock-based compensation | 1,669 | 0 | 1,669 | 0 | 0
Issuance of common stock, net of issuance costs | 12,193 | 13 | 12,180 |  |
Issuance of common stock, net of issuance costs (in shares) |  | 13,225,000 |  |  |
Stock issued for exercise of stock options | 232 | 1 | 231 |  |
Stock issued for exercise of stock options (in shares) |  | 291,667 |  |  |
Stock issued for license agreement | 425 | 0 | 425 |  |
Stock issued for license agreement (in shares) |  | 334,911 |  |  |
Issuance of stock | 1 | 0 | 0 | 0 | 1
Issuance of stock (in shares) |  | 0 |  |  |
Net loss | (12,318) |  |  | (12,317) | (1)
Balance at Dec. 31, 2013 | $ 15,230 | $ 58 | $ 96,430 | $ (81,258) | $ 0
Balance (in shares) at Dec. 31, 2013 |  | 58,214,326 |  |  |

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