CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Current Assets:
Cash and Cash Equivalents	$ 22,755	$ 11,899
Marketable Securities	69,374	41,413
Accounts and Other Receivables	140	170
Prepaid and Other Current Assets	1,967	1,202
Total Current Assets	94,236	54,684
Property and Equipment, Net	8,447	9,093
Intangible Assets, Net	24,632	24,923
Other Assets	460	329
Goodwill	8,965	8,965
Total Assets	136,740	97,994
Current Liabilities:
Accounts Payable	535	935
Accrued Expenses	6,359	7,008
Current Portion of Long-Term Liabilities	358	219
Current Portion of Term Loan	5,294	6,136
Total Current Liabilities	12,546	14,298
Term Loan, less Current Portion	9,890	9,008
Other Long-Term Liabilities	6,418	5,966
Total Liabilities	28,854	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 March 31, 2012 and December 31, 2011
Common Stock, $.001 Par Value; 297,000,000 Shares Authorized; 58,735,636 and 44,210,636 Shares Issued and Outstanding at March 31, 2012 and December 31, 2011, respectively	59	44
Additional Paid-In Capital	323,587	271,032
Accumulated Other Comprehensive Income	2,762	2,652
Accumulated Deficit	(218,522)	(205,006)
Total Stockholders' Equity	107,886	68,722
Total Liabilities and Stockholders' Equity	$ 136,740	$ 97,994