Commercial Loans Receivables (Concentrations of Commercial Loans Receivables) (Details)	Sep. 26, 2020	Mar. 28, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration with one independent third-party and its affiliates	17.90%	21.00%
Geographic Concentration of Commercial Loans Receivables in Key States
Concentration Risk on Financing Receivables Percentage	10.00%	10.00%
ARIZONA
Geographic Concentration of Commercial Loans Receivables in Key States
Commercial Loans Receivables Geographic Concentration Percentage	10.50%
CALIFORNIA
Geographic Concentration of Commercial Loans Receivables in Key States
Commercial Loans Receivables Geographic Concentration Percentage	10.00%	11.00%