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Fair Value - Assets and Liabilities (Details) - USD ($)
$ in Thousands
Aug. 31, 2019
Nov. 30, 2018
Financial assets:    
Short-term investments $ 9,011 $ 17,000
Financial liabilities:    
Interest rate swaps 5,736 56
Carrying Value | Level 1    
Financial assets:    
Cash and cash equivalents 4,410 8,592
Carrying Value | Level 2    
Financial assets:    
Short-term investments 9,011 17,000
Interest rate swap assets 6 3,157
Financial liabilities:    
Mortgage and construction loans, net of debt issuance costs 143,571 145,052
Interest rate swaps 5,736 56
Estimated Fair Value | Level 1    
Financial assets:    
Cash and cash equivalents 4,410 8,592
Estimated Fair Value | Level 2    
Financial assets:    
Short-term investments 9,011 17,000
Interest rate swap assets 6 3,157
Financial liabilities:    
Mortgage and construction loans, net of debt issuance costs 146,300 144,712
Interest rate swaps $ 5,736 $ 56