CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Current Assets:
Cash and Cash Equivalents	$ 18,563	$ 11,899
Marketable Securities	60,109	41,413
Accounts and Other Receivables	61	170
Prepaid and Other Current Assets	1,665	1,202
Total Current Assets	80,398	54,684
Property and Equipment, Net	7,998	9,093
Intangible Assets, Net	24,340	24,923
Other Assets	428	329
Goodwill	8,965	8,965
Total Assets	122,129	97,994
Current Liabilities:
Accounts Payable	395	935
Accrued Expenses	6,555	7,008
Current Portion of Long-Term Liabilities	335	219
Current Portion of Term Loan	5,294	6,136
Total Current Liabilities	12,579	14,298
Term Loan, less Current Portion	8,608	9,008
Other Long-Term Liabilities	6,394	5,966
Total Liabilities	27,581	29,272
Commitments and Contingent Liabilities
Stockholders' Equity:
Convertible Preferred Stock, $.01 Par Value; 3,000,000 Shares Authorized; No Shares Issued and Outstanding at June 30, 2012 and December 31, 2011
Common Stock, $.001 Par Value; 297,000,000 Shares Authorized; 58,753,571 and 44,210,636 Shares Issued and Outstanding at June 30, 2012 and December 31, 2011, respectively	59	44
Additional Paid-In Capital	324,062	271,032
Accumulated Other Comprehensive Income	2,722	2,652
Accumulated Deficit	(232,295)	(205,006)
Total Stockholders' Equity	94,548	68,722
Total Liabilities and Stockholders' Equity	$ 122,129	$ 97,994