Income Taxes - Open Tax Years - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2017
Earliest Tax Year [Member] | State Tax Jurisdictions [Member]
Income Tax Examination [Line Items]
Open tax year	2012
Earliest Tax Year [Member] | Internal Revenue Service [Member]
Income Tax Examination [Line Items]
Open tax year	2014
Earliest Tax Year [Member] | Netherlands Tax Authority [Member]
Income Tax Examination [Line Items]
Open tax year	2012
Earliest Tax Year [Member] | Spanish Tax Authority [Member]
Income Tax Examination [Line Items]
Open tax year	2013
Earliest Tax Year [Member] | Italian Tax Authority [Member]
Income Tax Examination [Line Items]
Open tax year	2012
Earliest Tax Year [Member] | Israel Tax Authority [Member]
Income Tax Examination [Line Items]
Open tax year	2011
Latest Tax Year [Member] | State Tax Jurisdictions [Member]
Income Tax Examination [Line Items]
Open tax year	2015
Latest Tax Year [Member] | Internal Revenue Service [Member]
Income Tax Examination [Line Items]
Open tax year	2015
Latest Tax Year [Member] | Netherlands Tax Authority [Member]
Income Tax Examination [Line Items]
Open tax year	2015
Latest Tax Year [Member] | Spanish Tax Authority [Member]
Income Tax Examination [Line Items]
Open tax year	2016
Latest Tax Year [Member] | Italian Tax Authority [Member]
Income Tax Examination [Line Items]
Open tax year	2015
Latest Tax Year [Member] | Israel Tax Authority [Member]
Income Tax Examination [Line Items]
Open tax year	2015