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Long-Term Debt - Mortgage (Narrative) (Details) - Bond St. Building Brooklyn NY Two [Member] - USD ($)
1 Months Ended
Jan. 09, 2015
Nov. 30, 2019
Oct. 31, 2019
Debt Instrument [Line Items]      
Closed bank liabilities $ 6,000,000 $ 5,255,920  
Additional loans 652,274 144,080  
Amount outstanding $ 5,347,726 $ 5,400,000  
Term of loan 5 years 5 years  
Amortization period of loan 25 years    
Interest rate, percent 3.54% 4.375% 4.375%