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Sale of Real Estate (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
Aug. 31, 2020
Apr. 30, 2020
May 31, 2020
Aug. 31, 2020
Assets held for sale        
Gain on sale of assets       $ 2,551
Randolph MA        
Assets held for sale        
Proceeds from the sale of property $ 1,805     1,805
Gain on sale of assets $ 1,791     1,791
Pawtucket, RI manufacturing facility        
Assets held for sale        
Proceeds from the sale of property   $ 1,810 $ 1,810 1,810
Gain on sale of assets   $ 760   $ 760