Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current Assets:
Cash and cash equivalents	$ 20,671	$ 33,091
Investments	32,684	49,100
Accounts receivable	1,857	2,106
Prepaid expenses and other current assets	1,437	1,204
Total current assets	56,649	85,501
Property and equipment, net	406	278
Long-term investment – restricted	153	153
Goodwill	8,982	8,982
Other assets	3	51
Total assets	66,193	94,965
Current Liabilities:
Accounts payable	5,056	4,217
Accrued liabilities	2,324	1,934
Current portion of long-term debt, net	5,104	4,607
Total current liabilities	12,484	10,758
Long-term debt, net	15,798	19,558
Other long-term liabilities	41	139
Total liabilities	28,323	30,455
Commitments
Stockholders’ Equity:
Common stock, $0.01 par value—225,000,000 shares authorized; 141,217,276 shares issued and 139,994,430 shares outstanding at September 30, 2016; 130,213,224 shares issued and 128,990,378 shares outstanding at December 31, 2015	1,412	1,302
Additional paid-in capital	925,569	903,240
Treasury stock (at cost, 1,222,846 shares)	(1,524)	(1,524)
Accumulated deficit	(887,613)	(838,536)
Accumulated other comprehensive income	26	28
Total stockholders’ equity	37,870	64,510
Total liabilities and stockholders’ equity	$ 66,193	$ 94,965