CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 15,496	$ 39,788
Marketable securities	122,727	86,444
Accounts receivable	1,059	5,189
Income tax receivable	4,892	2,963
Prepaid expenses and other current assets	2,333	2,186
Total current assets	146,507	136,570
Marketable securities, non-current	40	1,819
Property, plant and equipment, net	5,749	7,013
Goodwill	46,790	44,794
Other intangible assets, net	74,514	86,198
Other assets	1,564	554
Total assets	275,164	276,948
Current liabilities:
Accounts payable	9,238	7,529
Accrued compensation	4,076	5,324
Other accrued liabilities	619	613
Deferred acquisition consideration	2,213	17,353
Deferred tax liability	3,494	3,342
Deferred revenue		509
Total current liabilities	19,640	34,670
Warrant liability	276	187
Deferred acquisition consideration, non-current	14,763	11,624
Deferred tax liability, non-current	3,543	9,545
Deferred revenue, non-current		921
Total liabilities	38,222	56,947
Commitments and contingencies
Stockholders' equity:
Preferred stock, $.001 par value; 2,000,000 shares authorized; none outstanding
Common stock, $.001 par value; 150,000,000 shares authorized; 93,573,548 and 93,049,938 shares issued and outstanding at December 31, 2012 and December 31, 2011, respectively	94	93
Additional paid in capital	565,153	561,355
Accumulated other comprehensive loss	(1,782)	(6,677)
Accumulated deficit	(326,523)	(334,770)
Total stockholders' equity	236,942	220,001
Total liabilities and stockholders' equity	$ 275,164	$ 276,948