Condensed Consolidated Balance Sheets (unaudited) (USD $)	Jun. 30, 2011		Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 6,533,645		$ 19,707,821
Marketable securities, current	9,123,188		190,804
Trade receivables	81,838		118,890
Other receivables	433,899		151,144
Prepaid assets	591,390		610,980
Other assets, current	489,039		389,039
Total current assets	17,252,999		21,168,678
Property, plant and equipment, net	2,248,319		2,626,821
Other assets, non-current	1,930,418		1,931,871
Goodwill	1,959,642		1,877,315
Other intangible assets, net	2,930,052		2,996,888
Total assets	26,321,430		30,601,573
Current liabilities:
Accounts payable	1,350,309		1,098,962
Accrued expenses and other current liabilities	1,666,914		2,828,168
Accrued wind-down expenses, current	1,406,465		1,310,571
Deferred revenue, current	23,593		45,885
Capital lease obligation, current	52,749		67,847
Deferred rent, current	2,584		0
Bonds payable, current	183,750		176,250
Total current liabilities	4,686,364		5,527,683
Capital lease obligation, non-current	0		17,979
Bonds payable, non-current	430,000		522,500
Fair value of warrant liability	1,868,745		6,671,929
Deposits and other long-term liabilities	291,807		276,439
Accrued wind-down expenses, non-current	1,363,353		1,989,800
Deferred rent, non-current	714,667		1,227
Deferred revenue, non-current	104,974		113,387
Total liabilities	9,459,910		15,120,944
Commitments and contingencies (Note 7)
Stockholders' equity:
Common stock, $0.01 par value; 75,000,000 shares authorized; issued and outstanding 13,865,574 at June 30, 2011 and 12,731,287 at December 31, 2010*	1,386,557	[1]	1,273,128	[1]
Additional paid-in capital	336,327,613		325,359,265
Accumulated deficit	(321,053,914)		(311,271,486)
Accumulated other comprehensive income	201,264		119,722
Total stockholders' equity	16,861,520		15,480,629
Total liabilities and stockholders' equity	$ 26,321,430		$ 30,601,573

[1] Adjusted for the 1-for-10 reverse stock split as discussed in Note 1