Segment Information - Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Segment Reporting, Asset Reconciling Item [Line Items]
Total identifiable assets	$ 1,763,958	$ 1,875,895	$ 1,787,344
Operating Segments | North America
Segment Reporting, Asset Reconciling Item [Line Items]
Total identifiable assets	1,141,084		1,195,693
Operating Segments | Europe & Africa
Segment Reporting, Asset Reconciling Item [Line Items]
Total identifiable assets	511,037		494,457
Operating Segments | Australia & New Zealand
Segment Reporting, Asset Reconciling Item [Line Items]
Total identifiable assets	60,416		63,613
Corporate
Segment Reporting, Asset Reconciling Item [Line Items]
Total identifiable assets	$ 51,421		$ 33,581