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Commercial Loans Receivables and Allowance for Loan Loss (Finance Receivables by Evaluation Methodology) (Details) - USD ($)
Dec. 30, 2017
Sep. 30, 2017
Apr. 01, 2017
Dec. 31, 2016
Oct. 01, 2016
Apr. 02, 2016
Allowance for loan losses and inventory finance receivables by class individually and collectively evaluated for impairment            
Allowance for loan loss $ (153,000) $ (242,000) $ (210,000) $ (130,000) $ (126,000) $ (128,000)
Direct Inventory Finance [Member]            
Allowance for loan losses and inventory finance receivables by class individually and collectively evaluated for impairment            
Financing Receivable, Collectively Evaluated for Impairment 15,253,000   13,688,000      
Financing Receivable, Individually Evaluated for Impairment 10,548,000   11,271,000      
Financing Receivable, Gross 25,801,000   24,959,000      
Allowance for loan loss: collectively evaluated for impairment (153,000)   (137,000)      
Allowance for loan loss: individually evaluated for impairment 0   (73,000)      
Allowance for loan loss (153,000)   (210,000)      
Participation Inventory Finance [Member]            
Allowance for loan losses and inventory finance receivables by class individually and collectively evaluated for impairment            
Financing Receivable, Collectively Evaluated for Impairment 0   0      
Financing Receivable, Individually Evaluated for Impairment 1,206,000   1,084,000      
Financing Receivable, Gross 1,206,000   1,084,000      
Allowance for loan loss: collectively evaluated for impairment 0   0      
Allowance for loan loss: individually evaluated for impairment 0   0      
Allowance for loan loss $ 0   $ 0