Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 9,744	$ 137,266
Short-term investments, including restricted investments of $430	272,739	202,073
Accounts receivable, net of allowances of $35	316	1,035
Assets held for sale	23,849	23,849
Prepaid expenses and other current assets	7,151	4,764
Total current assets	313,799	368,987
Property and equipment, net of accumulated depreciation and amortization of $18,672 and $36,274, respectively	684	1,080
Goodwill	44,543	44,543
Other intangible assets	53,357	53,357
Other assets	3,581	3,409
Total assets	415,964	471,376
Current liabilities:
Accounts payable	11,291	13,064
Accrued liabilities	10,807	10,120
Current portion of deferred revenue	2,218	1,618
Current portion of long-term debt	19,255	20,167
Total current liabilities	43,571	44,969
Deferred revenue, net of current portion	11,708	12,679
Long-term debt	87,500	87,500
Deferred tax liabilities	18,675	18,675
Other long-term liabilities	23,036	23,535
Total liabilities	$ 184,490	$ 187,358
Commitments and contingencies
Equity:
Preferred stock, $.01 par value; 5,000 shares authorized; no shares issued and outstanding	$ 0	$ 0
Common stock, $.001 par value; 225,000 and 128,571 shares authorized; 103,851 and 103,663 shares issued, respectively	104	104
Additional paid-in capital	1,394,421	1,390,619
Accumulated deficit	(1,160,402)	(1,104,252)
Accumulated other comprehensive gain (loss)	98	(63)
Treasury stock, at cost, 237 and 183 shares, respectively	(2,747)	(2,390)
Total equity	231,474	284,018
Total liabilities and equity	$ 415,964	$ 471,376