Acquisitions - Additional Information (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	May. 23, 2014	May. 31, 2015	May. 31, 2014	May. 31, 2015	May. 31, 2014
Business Acquisition [Line Items]
Cash paid for business acquisitions, net of cash acquired				$ 0	$ 30,500
Purchase accounting adjustments				3,244
Net sales		$ 320,100	$ 378,187	948,870	$ 1,045,513
Hayes Industries [Member]
Business Acquisition [Line Items]
Business Acquisition, Date of Acquisition Agreement	May 23, 2014
Cash paid for business acquisitions, net of cash acquired	$ 30,500
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High		4,000		4,000
Recognition of Goodwill due to Business acquired	14,300
Business Acquisition, Purchase Price Allocation, Intangible Assets Other than Goodwill	10,600
Purchase accounting adjustments				3,244
Net sales		$ 7,600		$ 21,700
Hayes Industries [Member] | Customer relationships
Business Acquisition [Line Items]
Business Acquisition, Purchase Price Allocation, Intangible Assets Other than Goodwill	3,300
Hayes Industries [Member] | Patents
Business Acquisition [Line Items]
Business Acquisition, Purchase Price Allocation, Intangible Assets Other than Goodwill	5,000
Hayes Industries [Member] | Tradenames
Business Acquisition [Line Items]
Business Acquisition, Purchase Price Allocation, Intangible Assets Other than Goodwill	2,000
Hayes Industries [Member] | Other intangibles
Business Acquisition [Line Items]
Business Acquisition, Purchase Price Allocation, Intangible Assets Other than Goodwill	$ 300