Restructuring Charges and Other Exit-Related Activities - Restructuring Costs and Other Exit-Related Activities by Segment (Details) $ in Thousands	12 Months Ended
	Aug. 31, 2016 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 6,022
Total restructuring charges and other exit-related activities	7,812
Asset impairments and accelerated depreciation
Restructuring Cost and Reserve [Line Items]
Asset impairments and accelerated depreciation	3,127
Gains on exit-related disposals
Restructuring Cost and Reserve [Line Items]
Gains on exit-related disposals	(1,337)
Total other exit-related activities
Restructuring Cost and Reserve [Line Items]
Total other exit-related activities	1,790
Operating Segments | AMR and CSS
Restructuring Cost and Reserve [Line Items]
Restructuring charges	4,995
Operating Segments | AMR | Asset impairments and accelerated depreciation
Restructuring Cost and Reserve [Line Items]
Asset impairments and accelerated depreciation	2,180
Operating Segments | AMR | Gains on exit-related disposals
Restructuring Cost and Reserve [Line Items]
Gains on exit-related disposals	(1,337)
Unallocated (Corporate)
Restructuring Cost and Reserve [Line Items]
Restructuring charges	943
Restructuring charges and other exit-related activities | Asset impairments and accelerated depreciation
Restructuring Cost and Reserve [Line Items]
Asset impairments and accelerated depreciation	3,127
Restructuring charges and other exit-related activities | Gains on exit-related disposals
Restructuring Cost and Reserve [Line Items]
Gains on exit-related disposals	(1,337)
Restructuring charges and other exit-related activities | Total other exit-related activities
Restructuring Cost and Reserve [Line Items]
Total other exit-related activities	1,790
Restructuring charges and other exit-related activities | Discontinued operations
Restructuring Cost and Reserve [Line Items]
Restructuring charges	84
Total restructuring charges and other exit-related activities	1,031
Restructuring charges and other exit-related activities | Discontinued operations | Asset impairments and accelerated depreciation
Restructuring Cost and Reserve [Line Items]
Asset impairments and accelerated depreciation	$ 947