Commercial Loans Receivables and Allowance for Loan Loss (Commercial Loans Receivables by Class and Credit Quality Indicator) (Details) - USD ($) $ in Thousands	Dec. 28, 2019	Mar. 30, 2019
Direct loans receivable
Risk profile based on payment activity
Financing Receivable, before Allowance for Credit Loss	$ 44,619	$ 42,899
Direct loans receivable | Performing
Risk profile based on payment activity
Financing Receivable, before Allowance for Credit Loss	44,619	42,899
Direct loans receivable | Watch list
Risk profile based on payment activity
Financing Receivable, before Allowance for Credit Loss	0	0
Direct loans receivable | Nonperforming
Risk profile based on payment activity
Financing Receivable, before Allowance for Credit Loss	0	0
Participation loans receivable
Risk profile based on payment activity
Financing Receivable, before Allowance for Credit Loss	148	495
Participation loans receivable | Performing
Risk profile based on payment activity
Financing Receivable, before Allowance for Credit Loss	148	495
Participation loans receivable | Watch list
Risk profile based on payment activity
Financing Receivable, before Allowance for Credit Loss	0	0
Participation loans receivable | Nonperforming
Risk profile based on payment activity
Financing Receivable, before Allowance for Credit Loss	$ 0	$ 0