Goodwill and Intangible Assets - Additional Information (Detail) - USD ($)		6 Months Ended		12 Months Ended
	Mar. 02, 2017	Aug. 31, 2017	Aug. 31, 2016	Feb. 28, 2017
Finite-Lived Intangible Assets [Line Items]
Amortization of trade names, customer lists, and patent		$ 3,077,000	$ 2,321,000
Goodwill acquired				$ 6,066,000
Independent Printing Company, Inc. [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill acquired				$ 6,100,000
Selling, General and Administrative [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization of trade names, customer lists, and patent	$ 830,000
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Remaining estimated useful life	17 years
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Remaining estimated useful life	19 years