Long Lived Assets by Geographic Area (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting, Asset Reconciling Item [Line Items]
Long Lived Assets	$ 494,527	$ 500,737
North America
Segment Reporting, Asset Reconciling Item [Line Items]
Long Lived Assets	464,253	465,453
Europe
Segment Reporting, Asset Reconciling Item [Line Items]
Long Lived Assets	29,426	34,430
APAC
Segment Reporting, Asset Reconciling Item [Line Items]
Long Lived Assets	$ 848	$ 854