Quarterly report pursuant to Section 13 or 15(d)

Property, Plant, and Equipment, net - Deprecation Expense (Details)

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Property, Plant, and Equipment, net - Deprecation Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Property, Plant and Equipment [Line Items]        
Total depreciation expense $ 12,010 $ 6,175 $ 33,522 $ 12,882
Cost of sales        
Property, Plant and Equipment [Line Items]        
Total depreciation expense 7,666 3,125 21,259 5,523
Sales and marketing expenses        
Property, Plant and Equipment [Line Items]        
Total depreciation expense 703 420 2,165 1,133
Product development        
Property, Plant and Equipment [Line Items]        
Total depreciation expense 1,687 399 2,838 1,453
General and administrative        
Property, Plant and Equipment [Line Items]        
Total depreciation expense $ 1,954 $ 2,231 $ 7,260 $ 4,773