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Revenue - Effect of New Accounting Pronouncement on Balance Sheet (Details) - USD ($) $ in Thousands | Mar. 31, 2018 | Jan. 01, 2018 | Dec. 31, 2017
--- | --- | --- | ---
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Prepaid expenses and other current assets | $ 102,349 | $ 79,973 | $ 73,358
Deferred Set-up Costs, Noncurrent | 342,913 |  | 282,478
Deferred subscriber acquisition costs, net |  | 315,858 |
Other assets | 131,988 | 130,288 | 123,967
Deferred tax liabilities | 1,381,723 | 1,388,594 | 1,376,708
Accumulated deficit | (1,148,059) | (963,782) | (998,212)
Calculated under Revenue Guidance in Effect before Topic 606 |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Prepaid expenses and other current assets | 95,108 |  | 73,358
Deferred subscriber acquisition costs, net | 302,947 |  | 282,478
Other assets | 126,117 |  | 123,967
Deferred tax liabilities | 1,368,180 |  | 1,376,708
Accumulated deficit | (1,187,594) |  | $ (998,212)
Difference between Revenue Guidance in Effect before and after Topic 606 | Accounting Standards Update 2014-09 |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Prepaid expenses and other current assets | 7,241 | 6,615 |
Deferred subscriber acquisition costs, net | 39,966 | 33,380 |
Other assets | 5,871 | 6,321 |
Deferred tax liabilities | 13,543 | 11,886 |
Accumulated deficit | $ 39,535 | $ 34,430 |

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