v2.4.0.6
Income Taxes (Details) (USD $)
3 Months Ended 12 Months Ended
Dec. 31, 2009
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2008
Income Tax Contingency [Line Items]          
Federal   $ 30,990,000 $ 85,848,000 $ (5,839,000)  
State   131,000 38,000 37,000  
Foreign source withholding tax   5,453,000 35,707,000 40,997,000  
Current Income Tax Expense (Benefit)   36,574,000 121,593,000 35,195,000  
Federal   (21,308,000) (31,747,000) 909,000  
State   (416,000) 277,000 0  
Foreign source withholding tax   20,603,000 (5,292,000) (12,316,000)  
Change Valuation Allowance   (313,000) 0 1,659,000  
Deferred income taxes   (1,434,000) (36,762,000) (9,748,000)  
Income Tax Expense (Benefit)   35,140,000 84,831,000 25,447,000  
Net operating losses   134,757,000 235,873,000 113,889,000  
Deferred Tax Assets, Operating Loss Carryforwards   73,754,000 60,187,000    
Deferred revenue, net   79,314,000 81,039,000    
Deferred Tax Assets, Tax Credit Carryforwards, Foreign   0 0    
Stock compensation   12,434,000 9,322,000    
Patent amortization   11,944,000 11,323,000    
Deferred Tax Asset Depreciation   1,344,000 1,874,000    
Other accrued liabilities   3,173,000 2,477,000    
Other employee benefits   1,097,000 1,050,000    
Deferred Tax Assets Net Before Deducting Valuation Allowance   183,060,000 167,272,000    
Less: valuation allowance   78,497,000 64,034,000    
Net deferred tax asset   104,563,000 103,238,000    
Tax at U.S. statutory rate   43,612,000 83,456,000 39,446,000  
Foreign withholding tax, with no U.S. foreign tax credit   0 0 0  
State   (14,251,000) (1,252,000) 24,000  
Change in federal and state valuation allowance   13,608,000 1,554,000 1,659,000  
Adjustment to tax credits   0 0 (19,055,000)  
Adjustments to uncertain tax positions   (6,775,000) 0 2,655,000  
Other   (1,054,000) 1,073,000 718,000  
Unrecognized Tax Benefits 6,500,000 0 6,500,000 6,500,000 4,400,000
Unrecognized Tax Benefits, Decreases Resulting from Prior Period Tax Positions   0 0 (600,000)  
Unrecognized Tax Benefits, Increases Resulting from Prior Period Tax Positions 2,700,000 0 0 2,655,000  
Foreign Income Tax Expense (Benefit), Continuing Operations 19,100,000        
Unrecognized Tax Benefits, Period Increase (Decrease)   8,300,000   16,400,000  
Liability for Uncertain Tax Positions, Noncurrent Balance as of December 31, 2010   6,459,000 6,459,000 4,404,000  
Additions   0 0 0  
Reductions   0 0 0  
Unrecognized Tax Benefits, Decreases Resulting from Prior Period Tax Positions   (6,459,000) 0 0  
Settlements   0 0 (600,000)  
Lapses in statues of limitations   0 0 0  
Liability for Uncertain Tax Positions, Noncurrent Balance as of December 31, 2011 6,459,000 0 6,459,000 6,459,000  
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued   0 300,000    
Income taxes paid, including foreign witholding taxes   36,593,000 113,820,000 44,853,000  
Federal
         
Income Tax Contingency [Line Items]          
Deferred Tax Assets, Operating Loss Carryforwards, Domestic   0 0    
Deferred revenue, net   56,128,000 43,042,000    
Deferred Tax Assets, Tax Credit Carryforwards, Foreign   0 0    
Stock compensation   10,748,000 8,011,000    
Patent amortization   11,909,000 11,321,000    
Deferred Tax Asset Depreciation   1,182,000 1,641,000    
Other accrued liabilities   2,726,000 2,115,000    
Other employee benefits   938,000 898,000    
Deferred Tax Assets Net Before Deducting Valuation Allowance   83,631,000 67,028,000    
Less: valuation allowance   2,225,000 1,659,000    
Net deferred tax asset   81,406,000 65,369,000    
State
         
Income Tax Contingency [Line Items]          
Deferred Tax Assets, Operating Loss Carryforwards, State and Local   73,754,000 60,187,000    
Deferred revenue, net   435,000 96,000    
Deferred Tax Assets, Tax Credit Carryforwards, Foreign   0 0    
Stock compensation   1,686,000 1,311,000    
Patent amortization   35,000 2,000    
Deferred Tax Asset Depreciation   162,000 233,000    
Other accrued liabilities   447,000 362,000    
Other employee benefits   159,000 152,000    
Deferred Tax Assets Net Before Deducting Valuation Allowance   76,678,000 62,343,000    
Less: valuation allowance   76,272,000 62,375,000    
Net deferred tax asset   406,000 (32,000)    
Foreign
         
Income Tax Contingency [Line Items]          
Deferred Tax Assets, Operating Loss Carryforwards, Foreign   0 0    
Deferred revenue, net   22,751,000 37,901,000    
Deferred Tax Assets, Tax Credit Carryforwards, Foreign   0 0    
Stock compensation   0 0    
Patent amortization   0 0    
Deferred Tax Asset Depreciation   0 0    
Other accrued liabilities   0 0    
Other employee benefits   0 0    
Deferred Tax Assets Net Before Deducting Valuation Allowance   22,751,000 37,901,000    
Less: valuation allowance   0 0    
Net deferred tax asset   22,751,000 37,901,000    
Income taxes paid, including foreign witholding taxes   5,500,000 35,600,000 40,900,000  
Foreign Withholding Taxes Accrued   2,800,000 2,900,000    
Tax Settlement [Member]
         
Income Tax Contingency [Line Items]          
Unrecognized Tax Benefits, Decreases Resulting from Prior Period Tax Positions   3,800,000      
Tax Period 1999-2005 [Member]
         
Income Tax Contingency [Line Items]          
Income taxes paid, including foreign witholding taxes 29,300,000 29,300,000      
Tax Period 2006-2011 [Member] | Foreign
         
Income Tax Contingency [Line Items]          
Income taxes paid, including foreign witholding taxes   142,200,000      
Valuation Allowance of Deferred Tax Assets [Member]
         
Income Tax Contingency [Line Items]          
Change Valuation Allowance   $ 0 $ 0 $ 0