CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current Assets:
Cash and Cash Equivalents	$ 28,020	$ 169,402
Marketable Securities	173,023	133,581
Accounts and Other Receivables	427	489
Prepaid and Other Current Assets	3,515	1,717
Total Current Assets	204,985us-gaap_AssetsCurrent	305,189us-gaap_AssetsCurrent
Property and Equipment, Net	10,535us-gaap_PropertyPlantAndEquipmentNet	9,973us-gaap_PropertyPlantAndEquipmentNet
Intangible Assets, Net	21,807	22,820
Other Assets	1,722us-gaap_OtherAssetsNoncurrent	148us-gaap_OtherAssetsNoncurrent
Goodwill	8,965us-gaap_Goodwill	8,965us-gaap_Goodwill
Total Assets	248,014us-gaap_Assets	347,095us-gaap_Assets
Current Liabilities:
Accounts Payable	2,603us-gaap_AccountsPayableCurrent	2,243us-gaap_AccountsPayableCurrent
Accrued Expenses	19,296us-gaap_AccruedLiabilitiesCurrent	17,179us-gaap_AccruedLiabilitiesCurrent
Current Portion of Long-Term Liabilities	2,592us-gaap_OtherLiabilitiesCurrent	928us-gaap_OtherLiabilitiesCurrent
Total Current Liabilities	24,491us-gaap_LiabilitiesCurrent	20,350us-gaap_LiabilitiesCurrent
Other Long-Term Liabilities	11,863us-gaap_OtherLiabilitiesNoncurrent	6,950us-gaap_OtherLiabilitiesNoncurrent
Total Liabilities	36,354us-gaap_Liabilities	27,300us-gaap_Liabilities
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, 2014 and 2013
Common Stock, $.001 Par Value; 297,000,000 Shares Authorized; 89,592,779 and 89,246,832 Shares Issued and Outstanding at December 31, 2014 and 2013, respectively	90us-gaap_CommonStockValue	89us-gaap_CommonStockValue
Additional Paid-In Capital	672,739	662,717
Accumulated Other Comprehensive Income	2,590	2,668
Accumulated Deficit	(463,759)	(345,679)
Total Stockholders' Equity	211,660us-gaap_StockholdersEquity	319,795us-gaap_StockholdersEquity
Total Liabilities and Stockholders' Equity	$ 248,014	$ 347,095

Amount due from customers, clients, or other third-parties, or arising from transactions not separately disclosed, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value.

No definition available.