Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Additional Information (Details)

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Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Jan. 01, 2018
Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]            
Stockholders’ (deficit) equity $ (1,370,568)   $ (1,370,568)     $ (1,523,874)
Foreign currency translation adjustment, net of tax 8,242 $ (2,763) 17,826 $ (2,746)    
Foreign currency translation adjustment, tax 2,663   5,735      
Accumulated other comprehensive income, net of tax 4,594   $ 4,594   $ 22,420 18,407
Activation fee revenue recognition period     1 month      
Accumulated deficit (2,647,277)   $ (2,647,277)   (3,229,070) (3,243,473)
Adjustments Due to ASU 2018-02            
Accumulated Other Comprehensive Income (Loss) [Line Items]            
Accumulated other comprehensive income, net of tax         4,013  
Accumulated deficit         (4,013)  
Adjustments Due to ASU 2014-09 | Impact of Adopting ASU 2014-09            
Accumulated Other Comprehensive Income (Loss) [Line Items]            
Accumulated other comprehensive income, net of tax         0  
Accumulated deficit         18,416  
Adjustments Due to ASU 2014-09 | Impact of Adopting ASU 2014-09 | Activation Fees            
Accumulated Other Comprehensive Income (Loss) [Line Items]            
Reduction in deferred revenue         8,260  
Accumulated deficit         8,260  
Adjustments Due to ASU 2014-09 | Impact of Adopting ASU 2014-09 | Loyalty Payments            
Accumulated Other Comprehensive Income (Loss) [Line Items]            
Accumulated deficit         10,156  
Prepaid expenses and other current assets         $ 10,156  
Accumulated Other Comprehensive Income (Loss)            
Accumulated Other Comprehensive Income (Loss) [Line Items]            
Stockholders’ (deficit) equity $ 4,594   $ 4,594     $ 18,407