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Consolidated Balance Sheets (USD $) | Dec. 31, 2011 | Dec. 31, 2010
--- | --- | ---
Current assets: |  |
Cash and cash equivalents | $ 13,311,261 | $ 19,707,821
Marketable securities, current | 3,280,591 | 190,804
Trade receivables | 54,527 | 118,890
Other receivables | 213,500 | 151,144
Prepaid assets | 506,464 | 610,980
Other current assets | 22,063 | 389,039
Total current assets | 17,388,406 | 21,168,678
Property, plant and equipment, net | 2,054,563 | 2,626,821
Other assets, non-current | 1,856,057 | 1,931,871
Goodwill | 1,895,000 | 1,877,315
Other intangible assets, net | 2,011,473 | 2,996,888
Total assets | 25,205,499 | 30,601,573
Current liabilities: |  |
Accounts payable | 1,066,495 | 1,098,962
Accrued expenses and other current liabilities | 2,970,251 | 2,828,168
Accrued wind-down expenses, current | 1,360,766 | 1,310,571
Deferred revenue, current | 43,910 | 45,885
Capital lease obligation, current | 17,979 | 67,847
Deferred rent, current | 2,603 | 0
Bonds payable, current | 191,250 | 176,250
Total current liabilities | 5,653,254 | 5,527,683
Capital lease obligation, non-current | 0 | 17,979
Bonds payable, non-current | 331,250 | 522,500
Fair value of warrant liability | 6,042,315 | 6,671,929
Deposits and other long-term liabilities | 281,807 | 276,439
Accrued wind-down expenses, non-current | 774,020 | 1,989,800
Deferred rent, non-current | 1,301,167 | 1,227
Deferred revenue, non-current | 96,562 | 113,387
Total liabilities | 14,480,375 | 15,120,944
Commitments and contingencies (Note 12) |  |
Stockholders' equity: |  |
Common stock, $0.01 par value; 75,000,000 shares authorized; issued and outstanding 22,427,955 at December 31, 2011 and 12,731,287 at December 31, 2010 | 1,472,776 | 1,273,128
Additional paid-in capital | 341,811,657 | 325,359,265
Accumulated deficit | (332,600,022) | (311,271,486)
Accumulated other comprehensive income | 40,713 | 119,722
Total stockholders' equity | 10,725,124 | 15,480,629
Total liabilities and stockholders' equity | $ 25,205,499 | $ 30,601,573

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