Acquisition - Additional Information (Detail) - Pure Wick Inc $ in Millions	Jun. 22, 2017 USD ($)
Business Acquisition [Line Items]
Acquisition of a group of assets that does not meet the definition of a business, acquisition percentage	100.00%
Acquisition of a group of assets that does not meet the definition of a business, purchase consideration, cash payment	$ 10.0
Acquisition of a group of assets that does not meet the definition of a business, contingent payments	20.0
Acquisition of a group of assets that does not meet the definition of a business, recognition of deferred tax liabilities	5.4
Acquisition of a group of assets that does not meet the definition of a business, other net assets and liabilities	0.9
Developed technologies
Business Acquisition [Line Items]
Acquisition of a group of assets that does not meet the definition of a business, recognition of intangible assets	$ 14.5