Commercial Loans Receivables and Allowance for Loan Loss (Concentrations of Inventory Finance Receivables) (Details)	Mar. 30, 2019	Mar. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration Risk on Financing Receivables Percentage	10.00%	10.00%
Commercial Loans Receivable Principal Balance Concentration	22.00%	37.40%
CALIFORNIA
Geographic Concentration of Commercial Loans Receivables in Key States
Commercial loan receivables concentrations	21.10%	14.40%
ARIZONA
Geographic Concentration of Commercial Loans Receivables in Key States
Commercial loan receivables concentrations	16.30%	16.70%
OREGON
Geographic Concentration of Commercial Loans Receivables in Key States
Commercial loan receivables concentrations	10.40%	14.70%