Purchase Price Allocation (Parenthetical) (Detail) - Gilliland Gold Young (GGY) [Member]	Mar. 01, 2016
Business Acquisition [Line Items]
Weighted average life of intangible assets acquired (in years)	14 years
Trade Names [Member]
Business Acquisition [Line Items]
Weighted average life of intangible assets acquired (in years)	19 years
Customer Relationships [Member]
Business Acquisition [Line Items]
Weighted average life of intangible assets acquired (in years)	21 years
Software [Member]
Business Acquisition [Line Items]
Weighted average life of intangible assets acquired (in years)	7 years