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Commercial Loans Receivables and Allowance for Loan Loss (Commercial Loans Receivables, Net) (Details) - USD ($)
Dec. 29, 2018
Sep. 29, 2018
Mar. 31, 2018
Dec. 30, 2017
Sep. 30, 2017
Apr. 01, 2017
Commercial Loans Receivable            
Allowance for loan loss $ (160,000) $ (135,000) $ (42,000) $ (153,000) $ (242,000) $ (210,000)
Deferred Discounts, Finance Charges and Interest Included in Receivables (182,000)   0      
Financing Receivable, Net 37,039,000   16,601,000      
Direct Commercial Loans Receivables [Member]            
Commercial Loans Receivable            
Financing Receivable, Gross 36,849,000   16,368,000      
Allowance for loan loss (160,000)   (42,000)      
Participation Commercial Loans Receivables [Member]            
Commercial Loans Receivable            
Financing Receivable, Gross 532,000   275,000      
Allowance for loan loss $ 0   $ 0