Condensed Consolidated Balance Sheets (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
ASSETS
Cash	$ 4,705	$ 1,066
Restricted cash	1,157	1,017
Accounts receivable	5	59
Prepaid expenses and other current assets	567	818
Total current assets	6,434	2,960
Property and equipment, net of accumulated depreciation and amortization of $8,081 and $8,744	2,991	3,695
Intangible assets	22,734	22,734
Other assets	45	54
Total assets	32,204	29,443
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	2,611	3,922
Liability for refunds of warrant exercise proceeds	1,519	0
Accrued payroll and employee benefits	882	781
Other accrued liabilities	794	1,225
Accrued restructuring - current portion	593	312
Deferred revenue	510	34
Total current liabilities	6,909	6,274
Accrued restructuring, net of current portion	0	148
Deferred rent and other liabilities	1,319	1,384
Fair value liability for price adjustable subscription investment units	125	1,483
Fair value liability for price adjustable warrants	6,333	1,783
Deferred tax liabilities	1,202	1,202
Total liabilities	15,888	12,274
Commitments and contingencies
Stockholders' equity:
Preferred stock, $.01 par value; 100,000 shares authorized: no shares issued and outstanding	0	0
Common stock and additional paid-in capital, $0.006 par value; 180,000,000 shares authorized, 27,800,748 shares issued and outstanding as of December 31, 2010 and 64,339,555 shares issued and outstanding as of June 30, 2011	314,336	307,939
Accumulated deficit	(298,020)	(290,770)
Total stockholders' equity	16,316	17,169
Total liabilities and stockholders' equity	$ 32,204	$ 29,443