CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 65,860	$ 58,838
Accounts receivable, net	2,879	6,937
Other current assets	1,943	1,692
Total current assets	70,682	67,467
Auction rate securities	2,208	3,240
Fixed assets, at cost, net of accumulated depreciation and amortization	2,413	3,399
Intangible assets, net (Note 3)	31,379	0
Goodwill	7,702	0
Deferred tax assets - long term	0	2,052
Other assets	157	150
Total assets	114,541	76,308
Current liabilities:
Accounts payable and accrued expenses	6,512	5,640
Deferred tax liability - current	0	2,069
Deferred revenue - current	0	838
Other current liabilities	115	115
Total current liabilities	6,627	8,662
Contingent consideration liability	15,700	0
Deferred tax liability - long term	12,321	0
Other liabilities	914	1,078
Total liabilities	35,562	9,740
Stockholders' equity:
Preferred stock, $.001 par value; 20,000,000 shares authorized; issued and outstanding - none	0	0
Common stock, $.0013 par value; shares authorized - 160,000,000 in 2013 and 80,000,000 in 2012; issued - 61,025,404 in 2013 and 46,765,472 in 2012	79	61
Additional paid-in capital	548,510	493,613
Accumulated deficit	(466,677)	(424,105)
Accumulated other comprehensive loss	(192)	(260)
Treasury stock, at cost (200,000 shares in 2013 and 2012)	(2,741)	(2,741)
Total stockholders' equity	78,979	66,568
Total liabilities and stockholders' equity	$ 114,541	$ 76,308