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Condensed Consolidated Balance Sheets (unaudited) (USD $)
Sep. 30, 2011
Dec. 31, 2010
Current assets:  
Cash and cash equivalents$ 7,294,074$ 19,707,821
Marketable securities, current5,240,400190,804
Trade receivables76,718118,890
Other receivables527,466151,144
Prepaid assets485,238610,980
Other assets, current0389,039
Total current assets13,623,89621,168,678
Property, plant and equipment, net2,247,8012,626,821
Other assets, non-current1,913,6371,931,871
Goodwill1,905,6111,877,315
Other intangible assets, net2,768,9622,996,888
Total assets22,459,90730,601,573
Current liabilities:  
Accounts payable1,424,4361,098,962
Accrued expenses and other current liabilities2,322,8332,828,168
Accrued wind-down expenses, current1,429,4691,310,571
Deferred revenue, current54,06545,885
Capital lease obligation, current35,58167,847
Deferred rent, current3,5790
Bonds payable, current197,333176,250
Total current liabilities5,467,2965,527,683
Capital lease obligation, non-current017,979
Bonds payable, non-current371,417522,500
Fair value of warrant liability171,5516,671,929
Deposits and other long-term liabilities291,807276,439
Accrued wind-down expenses, non-current1,050,1941,989,800
Deferred rent, non-current1,031,7371,227
Deferred revenue, non-current100,768113,387
Total liabilities8,484,77015,120,944
Commitments and contingencies (Note 7)  
Stockholders' equity:  
Common stock, $0.01 par value; 75,000,000 shares authorized; issued and outstanding 14,283,853 at September 30, 2011 and 12,731,287 at December 31, 2010*1,391,335[1]1,273,128[1]
Additional paid-in capital337,909,810325,359,265
Accumulated deficit(325,388,266)(311,271,486)
Accumulated other comprehensive income62,258119,722
Total stockholders' equity13,975,13715,480,629
Total liabilities and stockholders' equity$ 22,459,907$ 30,601,573
[1] Adjusted for the 1-for-10 reverse stock split as discussed in Note 1