Quarterly report pursuant to Section 13 or 15(d)

Investments in Available-for-Sale Securities (Details)

v3.4.0.3
Investments in Available-for-Sale Securities (Details) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Available-for-sale securities    
Investments in available-for-sale securities $ 484,084 $ 439,560
Unrealized Holding Gains and Losses    
Gross unrealized holding gains 54 357
Gross unrealized holding losses 0 0
Other equity securities    
Available-for-sale securities    
Investments in available-for-sale securities 167 648
Time Warner    
Available-for-sale securities    
Investments in available-for-sale securities $ 483,917 $ 438,912