Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Expected Subscriber Fees (Details)

v3.3.1.900
Summary of Significant Accounting Policies - Expected Subscriber Fees (Details) - Subscriber Accounts
$ in Thousands
Dec. 31, 2015
USD ($)
Finite-Lived Intangible Assets [Line Items]  
2016 $ 220,860
2017 186,295
2018 157,168
2019 132,735
2020 $ 117,419