CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Current Assets:
Cash and Cash Equivalents	$ 11,899	$ 21,287
Marketable Securities	41,413	39,811
Accounts and Other Receivables	170	324
Prepaid and Other Current Assets	1,202	1,525
Total Current Assets	54,684	62,947
Property and Equipment, Net	9,093	10,832
Intangible Assets, Net	24,923	26,836
Other Assets	329	363
Goodwill	8,965	8,965
Total Assets	97,994	109,943
Current Liabilities:
Accounts Payable	935	931
Accrued Expenses	7,008	4,936
Current Portion of Long-Term Liabilities	219	818
Current Portion of Term Loan	6,136	1,111
Convertible Subordinated Debt		12,412
Total Current Liabilities	14,298	20,208
Term Loan, less Current Portion	9,008	8,889
Other Long-Term Liabilities	5,966	5,591
Total Liabilities	29,272	34,688
Commitments and Contingent Liabilities (Notes 14 and 16)
Stockholders' Equity:
Convertible Preferred Stock, $.01 Par Value; 3,000,000 Shares Authorized; No Shares Issued and Outstanding at December 31, 2011 and 2010
Common Stock, $.001 Par Value; 297,000,000 Shares Authorized; 44,210,636 and 32,055,382 Shares Issued and Outstanding at December 31, 2011 and 2010, respectively	44	32
Additional Paid-In Capital	271,032	232,679
Accumulated Other Comprehensive Income	2,652	2,751
Accumulated Deficit	(205,006)	(160,207)
Total Stockholders' Equity	68,722	75,255
Total Liabilities and Stockholders' Equity	$ 97,994	$ 109,943