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Commitments and Contingencies - Noncontrolling Interest Holder Put Agreements and Company Call Arrangements (Details) - USD ($)
$ in Thousands
9 Months Ended
Jul. 11, 2017
Sep. 30, 2017
Jun. 30, 2017
Redeemable Noncontrolling Interest [Line Items]      
Accretion of redeemable noncontrolling interests and equity   $ 14,441  
Purchase of noncontrolling interest   $ 834  
Pearl Retail Solutions Private Limited and Creative Arts Education Society      
Redeemable Noncontrolling Interest [Line Items]      
Noncontrolling interest, noncontrolling owners, ownership percent   10.00% 45.00%
Puttable Non-controlling Interest      
Redeemable Noncontrolling Interest [Line Items]      
Total redeemable noncontrolling interests and equity   $ 11,911  
Estimated Value as of September 30, 2017 redeemable within 12-months:   11,911  
Puttable Common Stock | Pearl Retail Solutions Private Limited and Creative Arts Education Society      
Redeemable Noncontrolling Interest [Line Items]      
Total redeemable noncontrolling interests and equity   1,835  
Estimated Value as of September 30, 2017 redeemable within 12-months:   $ 1,835  
Noncontrolling interest, noncontrolling owners, ownership percent 10.00%   45.00%
Noncontrolling interest, noncontrolling owners, interest acquired 35.00%    
Purchase of noncontrolling interest $ 11,400    
Callable Noncontrolling Interest, Common Stock | Pearl Retail Solutions Private Limited and Creative Arts Education Society      
Redeemable Noncontrolling Interest [Line Items]      
Noncontrolling interest, noncontrolling owners, ownership percent     35.00%
Percentage of noncontrolling interest of ownership percentage by noncontrolling owners     78.00%