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CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) | Jun. 30, 2013 | Dec. 31, 2012
--- | --- | ---
Current assets: |  |
Cash and cash equivalents | $ 22,752,895 | $ 8,471,275
Marketable securities, current | 1,426,061 | 13,900,678
Trade receivables | 68,472 | 110,159
Other receivables | 418,489 | 200,788
Prepaid assets | 568,968 | 537,590
Deferred financing costs, current | 55,964 |
Other assets, current | 704,041 | 820,827
Total current assets | 25,994,890 | 24,041,317
Property, plant and equipment, net | 3,450,968 | 1,375,329
Deferred financing costs, non-current | 43,255 |
Other assets, non-current | 1,053,850 | 947,301
Goodwill | 1,855,117 | 1,983,426
Other intangible assets, net | 1,654,085 | 1,822,904
Total assets | 34,052,165 | 30,170,277
Current liabilities: |  |
Accounts payable | 3,021,521 | 999,365
Accrued expenses and other current liabilities | 1,917,581 | 2,707,441
Accrued wind-down expenses, current |  | 1,102,762
Deferred revenue, current | 23,597 | 74,426
Capital lease obligation, current | 7,141 | 6,888
Deferred rent, current | 28,050 |
Loan payable net of discount, current | 2,609,954 |
Bonds payable, current | 213,750 | 206,250
Total current liabilities | 7,821,594 | 5,097,132
Bonds payable, non-current | 17,500 | 125,000
Capital lease obligations, non-current | 9,011 | 12,646
Loan payable net of discount, non-current | 6,976,234 |
Fair value of warrant liability | 8,277,443 | 9,265,365
Deposits and other long-term liabilities | 367,726 | 216,439
Deferred rent, non-current | 1,753,349 | 1,389,342
Deferred revenue, non-current | 71,323 | 79,736
Total liabilities | 25,294,180 | 16,185,660
Commitments and contingencies (Note 8) |  |
Stockholders' equity: |  |
Common stock, $0.01 par value; 75,000,000 shares authorized; issued and outstanding 41,260,461 at June 30, 2013 and 37,506,305 at December 31, 2012 | 412,605 | 375,063
Additional paid-in capital | 381,756,774 | 374,507,552
Accumulated deficit | (373,376,304) | (361,091,175)
Accumulated other comprehensive income | (35,090) | 193,177
Total stockholders' equity | 8,757,985 | 13,984,617
Total liabilities and stockholders' equity | $ 34,052,165 | $ 30,170,277

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