XML 57 R45.htm IDEA: XBRL DOCUMENT v3.19.1
Related Party Transactions (Transaction with Related Parties) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Related Party Transaction [Line Items]      
Prepaid expenses and other current assets $ 18,678   $ 19,972
Other non-current assets 5,908   8,898
Accrued expenses 42,126   58,140
Other non-current liabilities 13,688   14,367
Financing derivatives 22,000   26,100
Senior secured convertible notes 178,913   177,342
Investor      
Related Party Transaction [Line Items]      
Accounts receivable, net 3,818   4,024
Prepaid expenses and other current assets 849   484
Other non-current assets 50   65
Accounts payable 2,187   1,878
Accrued expenses 1,426   4,478
Other non-current liabilities 5,353   251
WPP | Investor      
Related Party Transaction [Line Items]      
Revenues 3,845 $ 2,091  
Interest income 0 219  
Accounts receivable, net 3,669   3,353
Prepaid expenses and other current assets 835   429
Other non-current assets 50   65
Accounts payable 2,187   1,833
Accrued expenses 1,325   1,384
Contract liability 2,894   1,945
Other non-current liabilities 219   251
WPP | Investor | Cost of revenues      
Related Party Transaction [Line Items]      
Expenses 2,095 2,490  
WPP | Investor | Selling and marketing      
Related Party Transaction [Line Items]      
Expenses 3 43  
WPP | Investor | Research and development      
Related Party Transaction [Line Items]      
Expenses 0 30  
WPP | Investor | General and administrative      
Related Party Transaction [Line Items]      
Expenses 40 27  
Starboard Value LP | Investor      
Related Party Transaction [Line Items]      
Interest income 6,700 $ 2,900  
Accrued expenses 0   3,046
Other non-current liabilities 5,134   0
Financing derivatives 22,000   26,100
Senior secured convertible notes $ 178,913   $ 177,342