Commitments and Contingencies - Additional Information (Detail) € in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2016 EUR (€)
Schedule Of Commitments And Contingencies [Line Items]
Net rent expense under operating leases	$ 8.9	$ 9.0	$ 8.8
Loss Contingency Accrual	0.0	$ 0.0
Purchase contracts [Member] | Inventory [Member]
Schedule Of Commitments And Contingencies [Line Items]
Minimum purchase contracts	$ 5.1			€ 4.8
Maximum [Member]
Schedule Of Commitments And Contingencies [Line Items]
Term of lease	11 years