Annual report pursuant to Section 13 and 15(d)

Schedule Of Disposal Groups Including Discontinued Operations Income Statement Balance Sheet And Additional Disclosures (Details)

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Schedule Of Disposal Groups Including Discontinued Operations Income Statement Balance Sheet And Additional Disclosures (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 02, 2019
Oct. 22, 2019
Sep. 20, 2019
Dec. 31, 2018
Dec. 19, 2018
Aug. 31, 2021
Aug. 31, 2020
Aug. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                
Disposal Group, Including Discontinued Operation, Revenue           $ 0 $ 67,010 $ 459,144
Disposal Group, Including Discontinued Operation, Costs of Goods Sold           0 49,749 344,563
Disposal Group, Including Discontinued Operation, Gross Profit (Loss)           0 17,261 114,581
Disposal Group, Including Discontinued Operation, General and Administrative Expense           1,456 11,561 68,339
Depreciation and Amortization, Discontinued Operations           0 0 5,666
Disposal Group including Discontinued Operation Restructuring Charges           0 (11) 1,779
Disposal Group including Discontinued Operation Impairment and other divestiture charges           0 28,972 286,175
Disposal Group, Including Discontinued Operation, Operating Income (Loss)           (1,456) (23,261) (247,378)
Disposal Group, Including Discontinued Operation, Interest Expense           0 14 124
Disposal Group, Including Discontinued Operation, Other Income           0 104 1,922
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax           (1,456) (23,171) (249,424)
Disposal Group Including Discontinued Operation Income Tax (Benefit) Expense           679 (18,337) 7,788
Net (Loss) Earnings from Discontinued Operations           (2,135) 4,834 257,212
Proceeds from sale of businesses, net of transaction costs           0 10,226 0
Goodwill, Impairment Charge           $ 5,656    
Other Divestiture Charges             10,500  
Precision-Hayes International [Member]                
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                
Impairment & divestiture charges               9,500
Disposal Date       Dec. 31, 2018        
Proceeds from sale of businesses, net of transaction costs       $ 23,600        
Cortland Fibron [Member]                
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                
Impairment & divestiture charges               1,700
Disposal Date         Dec. 19, 2018      
Proceeds from sale of businesses, net of transaction costs         $ 12,500      
UNI-LIFT Product Line [Domain]                
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                
Impairment & divestiture charges     $ 6,300          
Disposal Date     Sep. 20, 2019          
Proceeds from sale of businesses, net of transaction costs     $ 7,500          
Contingent Proceeds     $ 1,500          
Milwaukee Cylinder (Excluding UNI-LIFT) [Member]                
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                
Impairment & divestiture charges             4,500  
Disposal Date Dec. 02, 2019              
Goodwill, Impairment Charge             2,500  
Other Divestiture Charges             300  
Charges Associated with Withdrawal of Pension Plan             1,700  
Milwaukee Cylinder (including UNI-LIFT) [Member]                
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                
Disposal Group, Not Discontinued Operation, annual revenue             2,900 13,200
Connectors Product Line [Member]                
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                
Impairment & divestiture charges             1,000  
Disposal Date   Oct. 22, 2019            
Proceeds from sale of businesses, net of transaction costs   $ 2,700            
Disposal Group, Not Discontinued Operation, annual revenue             $ 200 $ 5,000