Annual report pursuant to Section 13 and 15(d)

Changes in Carrying Value of Goodwill (Detail)

v3.5.0.2
Changes in Carrying Value of Goodwill (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
May 23, 2014
Feb. 29, 2016
Feb. 28, 2015
Feb. 29, 2016
Aug. 31, 2016
Aug. 31, 2015
Goodwill [Roll Forward]            
Beginning Balance       $ 608,256 $ 608,256 $ 742,770
Recognition of Goodwill due to Business acquired $ 14,300       45,967  
Purchase accounting adjustments           (3,244)
Goodwill, Impairment Charge   $ (118,462) $ (78,530) (118,122)    
Write off of goodwill related to a business divestiture         (3,778)  
Impact of changes in foreign currency rates         (12,707) (52,740)
Ending Balance         519,276 608,256
Industrial            
Goodwill [Roll Forward]            
Beginning Balance       92,107 92,107 100,266
Recognition of Goodwill due to Business acquired         9,726  
Purchase accounting adjustments           (3,244)
Goodwill, Impairment Charge   0 0      
Write off of goodwill related to a business divestiture         0  
Impact of changes in foreign currency rates         (94) (4,915)
Ending Balance         101,739 92,107
Energy            
Goodwill [Roll Forward]            
Beginning Balance       236,450 236,450 350,627
Recognition of Goodwill due to Business acquired         36,241  
Purchase accounting adjustments           0
Goodwill, Impairment Charge   (73,919) (78,530)     (78,530)
Write off of goodwill related to a business divestiture         0  
Impact of changes in foreign currency rates         (11,451) (35,647)
Ending Balance         187,321 236,450
Engineered Solutions            
Goodwill [Roll Forward]            
Beginning Balance       $ 279,699 279,699 291,877
Recognition of Goodwill due to Business acquired         0  
Purchase accounting adjustments           0
Goodwill, Impairment Charge   $ (44,543) $ 0      
Write off of goodwill related to a business divestiture         (3,778)  
Impact of changes in foreign currency rates         (1,162) (12,178)
Ending Balance         $ 230,216 $ 279,699