Commercial Loans Receivables (Commercial Loans Receivables by Credit Quality Indicator and Year of Origination) (Details) - USD ($) $ in Thousands	Jun. 27, 2020	Mar. 28, 2020
Financing Receivable Recorded Investment [Line Items]
Commercial loans receivable	$ 45,081	$ 47,202
Fiscal 2021
Financing Receivable Recorded Investment [Line Items]
Commercial loans receivable	13,074
Fiscal 2020
Financing Receivable Recorded Investment [Line Items]
Commercial loans receivable	18,359
Fiscal 2019
Financing Receivable Recorded Investment [Line Items]
Commercial loans receivable	9,495
Fiscal 2018
Financing Receivable Recorded Investment [Line Items]
Commercial loans receivable	2,534
Fiscal 2017
Financing Receivable Recorded Investment [Line Items]
Commercial loans receivable	1,619
Performing
Financing Receivable Recorded Investment [Line Items]
Commercial loans receivable	44,956	47,016
Performing | Fiscal 2021
Financing Receivable Recorded Investment [Line Items]
Commercial loans receivable	13,074
Performing | Fiscal 2020
Financing Receivable Recorded Investment [Line Items]
Commercial loans receivable	18,359
Performing | Fiscal 2019
Financing Receivable Recorded Investment [Line Items]
Commercial loans receivable	9,370
Performing | Fiscal 2018
Financing Receivable Recorded Investment [Line Items]
Commercial loans receivable	2,534
Performing | Fiscal 2017
Financing Receivable Recorded Investment [Line Items]
Commercial loans receivable	1,619
Watch list
Financing Receivable Recorded Investment [Line Items]
Commercial loans receivable	125	186
Watch list | Fiscal 2021
Financing Receivable Recorded Investment [Line Items]
Commercial loans receivable	0
Watch list | Fiscal 2020
Financing Receivable Recorded Investment [Line Items]
Commercial loans receivable	0
Watch list | Fiscal 2019
Financing Receivable Recorded Investment [Line Items]
Commercial loans receivable	125
Watch list | Fiscal 2018
Financing Receivable Recorded Investment [Line Items]
Commercial loans receivable	0
Watch list | Fiscal 2017
Financing Receivable Recorded Investment [Line Items]
Commercial loans receivable	0
Nonperforming
Financing Receivable Recorded Investment [Line Items]
Commercial loans receivable	0	$ 0
Nonperforming | Fiscal 2021
Financing Receivable Recorded Investment [Line Items]
Commercial loans receivable	0
Nonperforming | Fiscal 2020
Financing Receivable Recorded Investment [Line Items]
Commercial loans receivable	0
Nonperforming | Fiscal 2019
Financing Receivable Recorded Investment [Line Items]
Commercial loans receivable	0
Nonperforming | Fiscal 2018
Financing Receivable Recorded Investment [Line Items]
Commercial loans receivable	0
Nonperforming | Fiscal 2017
Financing Receivable Recorded Investment [Line Items]
Commercial loans receivable	$ 0