Quarterly report pursuant to Section 13 or 15(d)

Changes in Carrying Value of Goodwill (Details)

v3.8.0.1
Changes in Carrying Value of Goodwill (Details)
$ in Thousands
6 Months Ended
Feb. 28, 2018
USD ($)
Goodwill [Roll Forward]  
Balance as of August 31, 2016 $ 530,081
Goodwill, Acquired During Period 8,856
Impact of changes in foreign currency rates 7,198
Balance as of February 28, 2018 546,135
Industrial  
Goodwill [Roll Forward]  
Balance as of August 31, 2016 103,875
Goodwill, Acquired During Period 0
Impact of changes in foreign currency rates 968
Balance as of February 28, 2018 104,843
Energy  
Goodwill [Roll Forward]  
Balance as of August 31, 2016 188,830
Goodwill, Acquired During Period 8,856
Impact of changes in foreign currency rates 4,180
Balance as of February 28, 2018 201,866
Engineered Solutions  
Goodwill [Roll Forward]  
Balance as of August 31, 2016 237,376
Goodwill, Acquired During Period 0
Impact of changes in foreign currency rates 2,050
Balance as of February 28, 2018 $ 239,426