Quarterly report pursuant to Section 13 or 15(d)

Assets and Liabilities Measured at Fair Value (Details)

v3.8.0.1
Assets and Liabilities Measured at Fair Value (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2017
Sep. 30, 2016
Realized and Unrealized Gains (Losses) on Financial Instruments      
Realized and unrealized gains (losses) $ 2,675 $ 5,026 $ 92,990
Zero-strike call option      
Realized and Unrealized Gains (Losses) on Financial Instruments      
Realized and unrealized gains (losses) $ 2,675 $ 5,026  
Time Warner Cable | Investment and financial instruments [member]      
Realized and Unrealized Gains (Losses) on Financial Instruments      
Realized and unrealized gains (losses)     $ 92,990