Warranty (Detail)	12 Months Ended
Dec. 31, 2016
Minimum
Product Warranty Liability
Product warranty period	12 months
Maximum
Product Warranty Liability
Product warranty period	60 months

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_ProductWarrantyLiabilityLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration