Segment Information - Identifiable Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Segment Reporting, Asset Reconciling Item [Line Items]
Property and equipment, net	$ 412,861	$ 429,842
Operating Segments | North America
Segment Reporting, Asset Reconciling Item [Line Items]
Property and equipment, net	234,305	238,601
Operating Segments | Europe & Africa
Segment Reporting, Asset Reconciling Item [Line Items]
Property and equipment, net	135,684	145,824
Operating Segments | Australia & New Zealand
Segment Reporting, Asset Reconciling Item [Line Items]
Property and equipment, net	17,709	19,232
Corporate
Segment Reporting, Asset Reconciling Item [Line Items]
Property and equipment, net	$ 25,163	$ 26,185