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Restructuring (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended
Nov. 30, 2020
Nov. 28, 2020
Nov. 30, 2019
Restructuring Cost and Reserve [Line Items]      
Proceeds from sale of property   $ 7,775 $ 0
Restructuring expenses   $ 93 $ (172)
Subsequent Event      
Restructuring Cost and Reserve [Line Items]      
Proceeds from sale of property $ 7,700    
Gain on sale of properties $ 3,600