Breakdown of Revenue and Non-Current Assets by Geographical Areas - Narrative (Details) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
---|---|---|---|---|
Jun. 30, 2019
USD ($)
market
|
Jun. 30, 2018
USD ($)
|
Jun. 30, 2019
USD ($)
market
|
Jun. 30, 2018
USD ($)
|
|
Revenues from External Customers and Long-Lived Assets [Line Items] | ||||
Number of geographical markets | market | 3 | 3 | ||
Revenue | $ 528,147 | $ 537,185 | $ 1,086,270 | $ 1,101,349 |
Sales Revenue, Net | ||||
Revenues from External Customers and Long-Lived Assets [Line Items] | ||||
Concentration risk, percentage | 1.40% | 2.40% | ||
France | ||||
Revenues from External Customers and Long-Lived Assets [Line Items] | ||||
Revenue | $ 35,200 | $ 37,000 | $ 72,600 | $ 78,400 |