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INCOME TAXES (Details 3) (USD $)
Dec. 31, 2013
Dec. 31, 2012
Deferred tax assets/(liabilities).    
Net Operating loss carryforward - U.S. $ 263,994,000 $ 244,016,000
Net operating loss carryforward - Foreign 21,660,000 19,638,000
Fixed assets 818,000 38,000
Investments 0 5,139,000
Accrued expenses 22,708,000 20,488,000
Stock-based compensation and other stock based payments 40,346,000 12,326,000
Other 33,530,000 15,881,000
Subtotal 383,056,000 317,526,000
Discount on convertible notes (97,550,000) (68,594,000)
Intangible assets and other (356,669,000) (47,053,000)
Less valuation allowance on deferred tax assets (173,558,000) (175,594,000)
Net deferred tax assets (liabilities)(1) 244,721,000 [1]  
Net deferred tax assets (liabilities)(1)   26,285,000 [1]
Current deferred tax liabilities 0 800,000
Other Income Tax Information    
Valuation allowance related to federal and state net operating loss carryforwards derived from equity transactions 150,100,000  
Valuation allowance related to international operations 21,700,000  
Federal tax deductions related to equity transactions not included in deferred tax assets 235,500,000  
International earnings for which no U.S. tax provision has been made $ 4,900,000,000  
[1] Includes current deferred tax liabilities of $38 thousand and $0.8 million as of December 31, 2013 and 2012, respectively, which are reported in "Accrued expenses and other current liabilities" on the Consolidated Balance Sheets.