Annual report pursuant to Section 13 and 15(d)

Assets and Liabilities Measured at Fair Value (Details)

v3.3.1.900
Assets and Liabilities Measured at Fair Value (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Realized and Unrealized Gains (Losses) on Financial Instruments      
Realized and unrealized gains (losses) $ 2,619 $ 51,189 $ 97,860
Charter | Warrants      
Realized and Unrealized Gains (Losses) on Financial Instruments      
Realized and unrealized gains (losses)   32,782 38,234
Time Warner | Investment and financial instruments [member]      
Realized and Unrealized Gains (Losses) on Financial Instruments      
Realized and unrealized gains (losses) $ 2,619 $ 18,407 $ 59,626