CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current Assets:
Cash and Cash Equivalents	$ 24,310	$ 40,288
Marketable Securities	69,712	99,139
Accounts and Other Receivables	3,162	1,880
Prepaid and Other Current Assets	1,895	3,449
Total Current Assets	99,079	144,756
Property and Equipment, Net	6,111	10,372
Intangible Assets, Net	48,690	67,591
Other Assets	1,929	1,929
Goodwill		90,976
Total Assets	155,809	315,624
Current Liabilities:
Accounts Payable	1,069	1,715
Accrued Expenses	7,007	19,455
Current Portion of Long-Term Liabilities	4,526	6,566
Total Current Liabilities	12,602	27,736
Other Long-Term Liabilities	19,147	51,519
Total Liabilities	31,749	79,255
Commitments and Contingent Liabilities (Notes 13 and 15)
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; 11,957,635 and 9,234,693 Shares Issued and Outstanding at December 31, 2018 and 2017, Respectively	12	9
Additional Paid-In Capital	1,083,903	1,046,313
Accumulated Other Comprehensive Income	2,583	2,564
Accumulated Deficit	(962,438)	(812,517)
Total Stockholders' Equity	124,060	236,369
Total Liabilities and Stockholders' Equity	$ 155,809	$ 315,624