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Basis of Presentation (Details) $ / shares in Units, $ in Thousands |  |  | 1 Months Ended | 3 Months Ended
--- | --- | --- | --- | ---
Dec. 10, 2014 $ / shares | Nov. 04, 2014 | Jan. 09, 2015 USD ($) shares | Mar. 31, 2016 USD ($) | Mar. 31, 2015 USD ($)
Broadband Spin-Off Distribution Ratio |  | 0.25 |  |  |
Subscription Rights Discount to Market Percentage | 20.00% |  |  |  |
Subscription Rights Period of Time for Calculation of Subscription Price | 20 days |  |  |  |
Cash received from rights offering |  |  | $ 697,300 |  | $ 697,309
Liberty |  |  |  |  |
Related Party Transaction, Amounts of Transaction |  |  |  | $ 1,000 | $ 891
Class C common stock |  |  |  |  |
Subscription rights distribution ratio | 0.20 |  |  |  |
Share Price | $ / shares | $ 40.36 |  |  |  |
Stock Issued During Period, Shares, New Issues | shares |  |  | 17,277,224 |  |

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