Annual report pursuant to Section 13 and 15(d)

Changes in Carrying Value of Goodwill (Details)

v3.10.0.1
Changes in Carrying Value of Goodwill (Details) - USD ($)
$ in Thousands
12 Months Ended
Aug. 31, 2018
Aug. 31, 2017
Aug. 31, 2016
Goodwill [Roll Forward]      
Beginning Balance $ 530,081 $ 519,276  
Recognition of Goodwill due to Business acquired 12,441    
Goodwill, Impairment Charge (21,227)   $ (118,122)
Goodwill, Foreign Currency Translation Gain (Loss) (7,383) 9,720  
Goodwill, Reclassification of Assets Held for Sale (1,500)    
Goodwill, Purchase Accounting Adjustments   1,085  
Ending Balance 512,412 530,081 519,276
Industrial Tools & Services [Member] [Domain]      
Goodwill [Roll Forward]      
Beginning Balance 238,707 235,457  
Recognition of Goodwill due to Business acquired 12,441    
Goodwill, Impairment Charge 0    
Goodwill, Foreign Currency Translation Gain (Loss) (2,443) 2,165  
Goodwill, Reclassification of Assets Held for Sale 0    
Goodwill, Purchase Accounting Adjustments   1,085  
Ending Balance 248,705 238,707 235,457
Engineered Components & Systems [Member] [Domain]      
Goodwill [Roll Forward]      
Beginning Balance 291,374 283,819  
Recognition of Goodwill due to Business acquired 0    
Goodwill, Impairment Charge 21,227    
Goodwill, Foreign Currency Translation Gain (Loss) (4,940) 7,555  
Goodwill, Reclassification of Assets Held for Sale (1,500)    
Goodwill, Purchase Accounting Adjustments   0  
Ending Balance $ 263,707 $ 291,374 $ 283,819