CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current Assets:
Cash and Cash Equivalents	$ 32,823	$ 40,288
Marketable Securities	72,795	99,139
Accounts and Other Receivables	3,175	1,880
Prepaid and Other Current Assets	2,176	3,449
Total Current Assets	110,969	144,756
Property and Equipment, Net	6,699	10,372
Intangible Assets, Net	48,690	67,591
Other Assets	1,929	1,929
Goodwill		90,976
Total Assets	168,287	315,624
Current Liabilities:
Accounts Payable	2,311	1,715
Accrued Expenses	9,614	19,455
Current Portion of Long-Term Liabilities	4,926	6,566
Total Current Liabilities	16,851	27,736
Other Long-Term Liabilities	23,302	51,519
Total Liabilities	40,153	79,255
Commitments and Contingent Liabilities
Stockholders' Equity:
Convertible Preferred Stock, $.01 Par Value; 3,000,000 Shares Authorized; No Shares Issued and Outstanding at September 30, 2018 and December 31, 2017
Common Stock, $.001 Par Value; 297,000,000 Shares Authorized; 168,575,504 and 138,520,404 Shares Issued and Outstanding at September 30, 2018 and December 31, 2017, Respectively	169	139
Additional Paid-In Capital	1,078,419	1,046,183
Accumulated Other Comprehensive Income	2,582	2,564
Accumulated Deficit	(953,036)	(812,517)
Total Stockholders' Equity	128,134	236,369
Total Liabilities and Stockholders' Equity	$ 168,287	$ 315,624