v3.3.1.900
Income Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Components of income (loss) before income taxes      
Domestic $ 224,058 $ 172,276 $ (50,551)
Foreign (2,486) 6,057 16,515
Income (loss) before income taxes 221,572 178,333 (34,036)
Current benefit (provision):      
Federal (165) (2,593) 1,118
State (9,601) 9,006 6,531
Foreign (6,303) (5,455) (5,992)
Total current (provision) benefit (16,069) 958 1,657
Deferred benefit (provision):      
Federal (62,572) (31,905) 26,511
State 4,818 (1,283) 10,074
Foreign 1,622 1,446 (805)
Total deferred (provision) benefit (56,132) (31,742) 35,780
Total income tax (provision) benefit, net $ (72,201) $ (30,784) $ 37,437
Actual tax provision reconciliation to the amounts computed by applying statutory Federal tax rate to income (loss) before taxes      
Statutory rate (as a percent) 35.00% 35.00% 35.00%
State income taxes, net of Federal benefit (as a percent) 2.10% (0.20%) 21.00%
Permanent differences (as a percent) 3.60% 0.60% (10.70%)
Tax credits (as a percent) (10.10%) (18.60%) 48.70%
Valuation allowance (as a percent) 2.80% (0.90%) 14.20%
Other (as a percent) (0.80%) 1.40% 1.80%
Total effective tax rate (as a percent) 32.60% 17.30% 110.00%
Deferred tax assets:      
Net operating losses, credit and other carryforwards $ 315,924 $ 412,744  
Unrealized losses on investments, net 47,678 30,248  
Accrued expenses 34,037 34,632  
Stock-based compensation 13,345 8,445  
Other asset 9,534 12,157  
Total deferred tax assets 420,518 498,226  
Valuation allowance (72,131) (73,664)  
Deferred tax assets after valuation allowance 348,387 424,562  
Deferred tax liabilities:      
Depreciation and amortization (993,326) (1,014,812)  
Other liabilities (1,412) (748)  
Total deferred tax liabilities (994,738) (1,015,560)  
Total net deferred tax liabilities (646,351) (590,998)  
Deferred Taxes by classification      
Current portion of net deferred tax assets   87,208  
Noncurrent portion of net deferred tax liabilities (646,351) (678,206)  
Total net deferred tax liabilities (646,351) (590,998)  
Net operating loss carryforwards 768,800    
Net operating loss carryforwards attributable to stock-based compensation 38,400    
Provision for income and withholding taxes on undistributed earnings attributable to foreign subsidiaries 0    
Reconciliation of the beginning and ending amount of unrecognized tax benefits      
Balance as of beginning of period 44,839 43,319 $ 34,677
Additions based on tax positions related to the current year 11,748 3,806 81
Additions based on tax positions related to prior years 5,779 4,643 9,929
Reductions based on tax positions related to prior years   (81) (1,253)
Reductions based on tax settlements   (6,848) (115)
Balance as of end of period 62,366 44,839 $ 43,319
Unrecognized tax benefits if recognized, could affect our effective tax rate 62,400 $ 44,800  
Federal      
Deferred Taxes by classification      
Tax credit available to offset future tax liabilities 96,900    
State      
Deferred Taxes by classification      
Tax credit available to offset future tax liabilities 30,600    
Foreign      
Deferred Taxes by classification      
Net operating loss carryforwards $ 92,700