Quarterly report pursuant to Section 13 or 15(d)

Summary of Financial Information by Reportable Segment and Product Line (Detail)

v2.4.0.8
Summary of Financial Information by Reportable Segment and Product Line (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Feb. 28, 2014
Feb. 28, 2013
Feb. 28, 2014
Segment
Feb. 28, 2013
Aug. 31, 2013
Segment Reporting Information [Line Items]          
Number of reportable segments     3    
Net sales $ 327,770 $ 300,468 $ 667,326 $ 608,277  
Operating profit (Loss) 38,981 36,871 82,628 80,345  
Assets 1,959,134   1,959,134   2,119,332
Assets of discontinued operations 0   0   272,606
Industrial
         
Segment Reporting Information [Line Items]          
Net sales 93,571 98,999 192,212 200,121  
Operating profit (Loss) 26,477 26,350 53,374 53,356  
Assets 280,498   280,498   280,110
Energy
         
Segment Reporting Information [Line Items]          
Net sales 106,031 80,794 213,956 171,563  
Operating profit (Loss) 9,504 9,677 18,427 25,064  
Assets 851,618   851,618   817,547
Engineered Solutions
         
Segment Reporting Information [Line Items]          
Net sales 128,168 120,675 261,158 236,593  
Operating profit (Loss) 9,548 8,275 22,737 15,900  
Assets 690,537   690,537   652,581
Vehicle Systems
         
Segment Reporting Information [Line Items]          
Net sales 67,278 56,468 138,927 114,498  
Other
         
Segment Reporting Information [Line Items]          
Net sales 60,890 64,207 122,231 122,095  
General Corporate
         
Segment Reporting Information [Line Items]          
Operating profit (Loss) (6,548) (7,431) (11,910) (13,975)  
Assets $ 136,481   $ 136,481   $ 96,488