Quarterly report pursuant to Section 13 or 15(d)

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

v3.10.0.1
Summary of Financial Information by Reportable Segment and Product Line (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
May 31, 2018
May 31, 2017
May 31, 2018
May 31, 2017
Aug. 31, 2017
Segment Reporting Information [Line Items]          
Net sales $ 317,096 $ 295,427 $ 881,216 $ 820,089  
Operating profit (Loss) 32,585 27,332 56,847 49,003  
Assets 1,504,785   1,504,785   $ 1,516,955
Impairment & divestiture charges   0 2,987 0  
Industrial          
Segment Reporting Information [Line Items]          
Net sales 108,297 100,503 304,294 279,441  
Operating profit (Loss) 25,999 23,705 61,023 60,860  
Assets 325,291   325,291   329,134
Industrial Tools [Member]          
Segment Reporting Information [Line Items]          
Net sales 98,970 87,404 270,919 245,122  
Heavy Lifting Technology [Member]          
Segment Reporting Information [Line Items]          
Net sales 9,327 13,099 33,375 34,319  
Energy          
Segment Reporting Information [Line Items]          
Net sales 83,857 83,480 225,690 241,010  
Operating profit (Loss) 6,269 905 2,050 3,537  
Assets 463,026   463,026   482,963
Energy Maintenance & Integrity          
Segment Reporting Information [Line Items]          
Net sales 63,421 59,905 169,020 176,316  
Other Energy Solutions [Member]          
Segment Reporting Information [Line Items]          
Net sales 20,436 23,575 56,670 64,694  
Engineered Solutions          
Segment Reporting Information [Line Items]          
Net sales 124,942 111,444 351,232 299,638  
Operating profit (Loss) 9,027 8,105 17,570 10,676  
Assets 543,760   543,760   531,068
On-Highway          
Segment Reporting Information [Line Items]          
Net sales 66,556 57,710 190,735 159,952  
Agriculture, Off-Highway and Other          
Segment Reporting Information [Line Items]          
Net sales 58,386 53,734 160,497 139,686  
General Corporate          
Segment Reporting Information [Line Items]          
Operating profit (Loss) (8,710) $ (5,383) (23,796) $ (26,070)  
Assets 172,708   172,708   $ 173,790
Viking [Domain]          
Segment Reporting Information [Line Items]          
Impairment & divestiture charges $ 0   $ 2,987