CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 119,302	$ 65,860
Accounts receivable, net	109	2,879
Other current assets	2,515	1,943
Total current assets	121,926	70,682
Auction rate securities	0	2,208
Fixed assets, at cost, net of accumulated depreciation and amortization	2,552	2,413
Intangible assets, net (Note 3)	28,700	31,379
Goodwill	7,702	7,702
Other assets	157	157
Total assets	161,037	114,541
Current liabilities:
Accounts payable and accrued expenses	6,570	6,512
Other current liabilities	115	115
Total current liabilities	6,685	6,627
Contingent consideration liability	17,200	15,700
Deferred tax liability - long term	11,332	12,321
Other liabilities	911	914
Total liabilities	36,128	35,562
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 2014 and 2013; issued - 69,832,949 in 2014 and 61,025,404 in 2013	91	79
Additional paid-in capital	589,826	548,510
Accumulated deficit	(462,267)	(466,677)
Accumulated other comprehensive loss	0	(192)
Treasury stock, at cost (200,000 shares in 2014 and 2013)	(2,741)	(2,741)
Total stockholders' equity	124,909	78,979
Total liabilities and stockholders' equity	$ 161,037	$ 114,541