Commercial Loans Receivables and Allowance for Loan Loss (Commercial Loans Receivables by Class and Credit Quality Indicator) (Details) - USD ($) $ in Thousands	Mar. 30, 2019	Mar. 31, 2018
Financing Receivable Recorded Investment [Line Items]
Commerical loans receivable, gross	$ 12,883	$ 11,088
Direct commercial loans receivables
Financing Receivable Recorded Investment [Line Items]
Commerical loans receivable, gross	42,899	16,368
Direct commercial loans receivables | Performing
Financing Receivable Recorded Investment [Line Items]
Commerical loans receivable, gross	42,899	16,368
Direct commercial loans receivables | Watch List
Financing Receivable Recorded Investment [Line Items]
Commerical loans receivable, gross	0	0
Direct commercial loans receivables | Nonperforming
Financing Receivable Recorded Investment [Line Items]
Commerical loans receivable, gross	0	0
Participation commercial loans receivables
Financing Receivable Recorded Investment [Line Items]
Commerical loans receivable, gross	495	275
Participation commercial loans receivables | Performing
Financing Receivable Recorded Investment [Line Items]
Commerical loans receivable, gross	495	275
Participation commercial loans receivables | Watch List
Financing Receivable Recorded Investment [Line Items]
Commerical loans receivable, gross	0	0
Participation commercial loans receivables | Nonperforming
Financing Receivable Recorded Investment [Line Items]
Commerical loans receivable, gross	$ 0	$ 0