Condensed Consolidated Balance Sheets (Unaudited) - USD ($)	Sep. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 34,739,000	$ 52,306,000
Marketable securities	2,500,000	0
Restricted cash	2,863,000	2,997,000
Accounts receivable	2,334,000	2,341,000
Prepaid expenses and other current assets	1,364,000	1,484,000
Total current assets	43,800,000	59,128,000
Property and equipment, net	52,000	11,295,000
Other assets	164,000	239,000
Total assets	44,016,000	70,662,000
Current liabilities:
Accounts payable	290,000	3,245,000
Accrued expenses	5,453,000	9,301,000
Loans payable, net of discount	4,217,000	11,722,000
Deferred revenue	457,000	537,000
Lease exit obligation		4,981,000
Deferred rent		10,569,000
Total current liabilities	10,417,000	40,355,000
Loans payable, net of current portion and discount	8,260,000	8,930,000
Deferred revenue	884,000	231,000
Other liabilities	$ 577,000	$ 540,000
Stockholders’ equity:
Preferred stock, $.001 par value: 5,000 shares authorized; no shares issued and outstanding
Common stock, $.001 par value: 200,000 shares authorized; 58,177 and 52,289 shares issued and outstanding at September 30, 2015 and December 31, 2014, respectively	$ 58,000	$ 52,000
Additional paid-in capital	512,259,000	500,582,000
Accumulated other comprehensive income (loss)	1,000
Accumulated deficit	(488,440,000)	(480,028,000)
Total stockholders’ equity	23,878,000	20,606,000
Total liabilities and stockholders’ equity	$ 44,016,000	$ 70,662,000