Goodwill and Other Intangible Assets Intangibles (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 28, 2017	Feb. 29, 2016	Feb. 28, 2017	Feb. 29, 2016	Aug. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 1,000	$ 2,300	$ 2,100	$ 3,800
Other Intangible Assets [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			2 years
Other Intangible Assets [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			30 years
Customer Lists [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Carrying Amount	49,379		$ 49,379		$ 51,554
Finite-Lived Intangible Assets, Accumulated Amortization	(13,899)		(13,899)		(15,550)
Finite-Lived Intangible Assets, Net	35,480		35,480		36,004
Trademarks and other intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Carrying Amount	31,569		31,569		35,015
Finite-Lived Intangible Assets, Accumulated Amortization	(24,015)		(24,015)		(26,253)
Finite-Lived Intangible Assets, Net	7,554		7,554		8,762
Total intangible assets [Domain]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Carrying Amount	80,948		80,948		86,569
Finite-Lived Intangible Assets, Accumulated Amortization	(37,914)		(37,914)		(41,803)
Finite-Lived Intangible Assets, Net	$ 43,034		$ 43,034		$ 44,766