Fair Value Measurements (Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	Dec. 26, 2020	Mar. 28, 2020
Summary of Assets and Liabilities Measured at Fair Value for Disclosure
Non-marketable equity investments	$ 21,791	$ 21,536
Non Recurring
Summary of Assets and Liabilities Measured at Fair Value for Disclosure
Loans held for investment	59,167	68,503
Loans held for sale	23,223	15,492
Construction Loan	13,923	13,400
Commercial loans receivable	38,300	46,819
Securitized financings and other	(12,493)	(15,592)
Non-marketable equity investments	21,791	21,536
Level 1 | Non Recurring
Summary of Assets and Liabilities Measured at Fair Value for Disclosure
Loans held for investment	0	0
Loans held for sale	0	0
Construction Loan	0	0
Commercial loans receivable	0	0
Securitized financings and other	0	0
Non-marketable equity investments	0	0
Level 2 | Non Recurring
Summary of Assets and Liabilities Measured at Fair Value for Disclosure
Loans held for investment	0	0
Loans held for sale	0	0
Construction Loan	0	0
Commercial loans receivable	0	0
Securitized financings and other	(12,493)	(15,592)
Non-marketable equity investments	0	0
Level 3 | Non Recurring
Summary of Assets and Liabilities Measured at Fair Value for Disclosure
Loans held for investment	59,167	68,503
Loans held for sale	23,223	15,492
Construction Loan	13,923	13,400
Commercial loans receivable	38,300	46,819
Securitized financings and other	0	0
Non-marketable equity investments	$ 21,791	$ 21,536