Quarterly report pursuant to Section 13 or 15(d)

Changes in Carrying Value of Goodwill (Details)

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Changes in Carrying Value of Goodwill (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Feb. 28, 2015
May. 31, 2015
Goodwill [Roll Forward]    
Balance as of August 31, 2014   $ 742,770
Purchase accounting adjustments   (3,244)
Goodwill Impairment charge $ (77,992) (78,530)
Impact of changes in foreign currency rates   (48,764)
Balance as of May 31, 2015   612,232
Industrial    
Goodwill [Roll Forward]    
Balance as of August 31, 2014   100,265
Purchase accounting adjustments   (3,244)
Goodwill Impairment charge   0
Impact of changes in foreign currency rates   (5,058)
Balance as of May 31, 2015   91,963
Energy    
Goodwill [Roll Forward]    
Balance as of August 31, 2014   350,628
Purchase accounting adjustments   0
Goodwill Impairment charge   (78,530)
Impact of changes in foreign currency rates   (31,382)
Balance as of May 31, 2015   240,715
Engineered Solutions    
Goodwill [Roll Forward]    
Balance as of August 31, 2014   291,877
Purchase accounting adjustments   0
Goodwill Impairment charge   0
Impact of changes in foreign currency rates   (12,324)
Balance as of May 31, 2015   $ 279,553