Segment Information - Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting, Asset Reconciling Item [Line Items]
Property and equipment, net	$ 429,842	$ 461,277
Operating Segments | North America
Segment Reporting, Asset Reconciling Item [Line Items]
Property and equipment, net	238,601	258,496
Operating Segments | Europe & Africa
Segment Reporting, Asset Reconciling Item [Line Items]
Property and equipment, net	145,824	158,335
Operating Segments | Australia & New Zealand
Segment Reporting, Asset Reconciling Item [Line Items]
Property and equipment, net	19,232	19,988
Corporate
Segment Reporting, Asset Reconciling Item [Line Items]
Property and equipment, net	$ 26,185	$ 24,458