Fair Value Measurements (Assets and Liabilities Measured at Fair Value) (Details) - USD ($) $ in Thousands	Mar. 30, 2019	Mar. 31, 2018
Summary of Assets and Liabilities Measured at Fair Value for Disclosure
Loans held for investment	$ 76,319	$ 88,960
Loans held for sale	11,799	13,229
Loans held-construction advances	12,883	11,008
Commercial loans receivable	43,582	16,972
Securitized financings and other	(38,101)	(64,509)
Equity Method Investments	20,276	18,853
Level 1
Summary of Assets and Liabilities Measured at Fair Value for Disclosure
Loans held for investment	0	0
Loans held for sale	0	0
Loans held-construction advances	0	0
Commercial loans receivable	0	0
Securitized financings and other	0	0
Equity Method Investments	0	0
Level 2
Summary of Assets and Liabilities Measured at Fair Value for Disclosure
Loans held for investment	0	0
Loans held for sale	0	0
Loans held-construction advances	0	0
Commercial loans receivable	0	0
Securitized financings and other	(38,101)	0
Equity Method Investments	0	0
Level 3
Summary of Assets and Liabilities Measured at Fair Value for Disclosure
Loans held for investment	76,319	88,960
Loans held for sale	11,799	13,229
Loans held-construction advances	12,883	11,008
Commercial loans receivable	43,582	16,972
Securitized financings and other	0	(64,509)
Equity Method Investments	$ 20,276	$ 18,853