Quarterly report pursuant to Section 13 or 15(d)

Assets and Liabilities Measured at Fair Value (Details)

v3.2.0.727
Assets and Liabilities Measured at Fair Value (Details)
$ in Thousands
 1 Months Ended 6 Months Ended
Jul. 31, 2015
USD ($)
Jun. 30, 2015
USD ($)
Apr. 30, 2015
USD ($)
Jun. 30, 2015
USD ($)
Jun. 30, 2014
USD ($)
Mar. 27, 2015
USD ($)
$ / item
shares
Feb. 28, 2015
$ / item
shares
Dec. 31, 2014
USD ($)
$ / item
shares
Assets and Liabilities Measured at Fair Value                
Short-term marketable securities   $ 9,008   $ 9,008       $ 9,001
Investments, at fair value   421,914   421,914       360,762
Payments from settlements of financial instruments       115,106 $ 32,415      
Revolving Credit Facility                
Assets and Liabilities Measured at Fair Value                
Line of Credit Facility, Maximum Borrowing Capacity           $ 234,000    
Time Warner                
Assets and Liabilities Measured at Fair Value                
Investments, at fair value   421,364   421,364       359,615
Cashless Collar                
Assets and Liabilities Measured at Fair Value                
Payments from settlements of financial instruments $ 67,100              
Cashless Collar | Time Warner                
Assets and Liabilities Measured at Fair Value                
Derivative share amount hedged | shares           1,700,000    
Cashless Collar | Put Option | Time Warner                
Assets and Liabilities Measured at Fair Value                
Derivative, Price Risk Option Strike Price | $ / item           136.80    
Cashless Collar | Call Option | Time Warner                
Assets and Liabilities Measured at Fair Value                
Derivative, Price Risk Option Strike Price | $ / item           161.62    
Total | Recurring                
Assets and Liabilities Measured at Fair Value                
Cash and cash equivalents   745,178   745,178       36,002
Short-term marketable securities   9,008   9,008       9,001
Total | Written call option | Recurring | Time Warner                
Assets and Liabilities Measured at Fair Value                
Derivative liabilities, at fair value   (41,132)   (41,132)       (75,356)
Available for sale securities | Total | Recurring                
Assets and Liabilities Measured at Fair Value                
Investments, at fair value   421,914   421,914       $ 360,762
Expiration Date February 2015 | Written call option | Time Warner                
Assets and Liabilities Measured at Fair Value                
Class of Warrant or Right, Outstanding | shares               625,000
Derivative, Price Risk Option Strike Price | $ / item               92.02
Expiration Date February 2016 [member] | Written call option | Time Warner                
Assets and Liabilities Measured at Fair Value                
Class of Warrant or Right, Outstanding | shares             625,000  
Derivative, Price Risk Option Strike Price | $ / item             100.39  
Payments from settlements of financial instruments   48,300            
Expiration Date May 2015 | Written call option | Time Warner                
Assets and Liabilities Measured at Fair Value                
Class of Warrant or Right, Outstanding | shares               625,000
Derivative, Price Risk Option Strike Price | $ / item               90.84
Payments from settlements of financial instruments     $ 36,700          
Quoted prices in active markets for identical assets (Level 1) | Recurring                
Assets and Liabilities Measured at Fair Value                
Cash and cash equivalents   745,178   745,178       $ 36,002
Short-term marketable securities   9,008   9,008       9,001
Quoted prices in active markets for identical assets (Level 1) | Available for sale securities | Recurring                
Assets and Liabilities Measured at Fair Value                
Investments, at fair value   421,914   421,914       360,762
Level 2 | Written call option | Recurring | Time Warner                
Assets and Liabilities Measured at Fair Value                
Derivative liabilities, at fair value   $ (41,132)   $ (41,132)       $ (75,356)
Minimum                
Level 2 input                
Volatility       17.40%        
Interest rate       0.41%        
Dividend yield       0.00%        
Maximum                
Level 2 input                
Volatility       21.40%        
Interest rate       0.65%        
Dividend yield       0.24%