Revenue from Contracts with Customers (Disaggregation of Revenue) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Dec. 28, 2019	Dec. 29, 2018	Dec. 28, 2019	Dec. 29, 2018
Disaggregation of Revenue [Line Items]
Revenues		$ 273,722	$ 233,700	$ 806,439	$ 721,633
Factory-built housing
Disaggregation of Revenue [Line Items]
Revenues		257,106	220,342	758,564	680,198
Factory-built housing | HUD Code
Disaggregation of Revenue [Line Items]
Revenues		208,966	174,068	619,001	545,071
Factory-built housing | Modular
Disaggregation of Revenue [Line Items]
Revenues		24,508	25,698	63,327	72,046
Factory-built housing | Park Model RVs
Disaggregation of Revenue [Line Items]
Revenues		10,219	10,037	34,831	27,743
Factory-built housing | Product and Service, Other
Disaggregation of Revenue [Line Items]
Revenues	[1]	13,413	10,539	41,405	35,338
Financial Services
Disaggregation of Revenue [Line Items]
Revenues		16,616	13,358	47,875	41,435
Financial Services | Insurance Agency Commissions
Disaggregation of Revenue [Line Items]
Revenues		783	704	2,212	1,979
Financial Services | Financial Service, Other
Disaggregation of Revenue [Line Items]
Revenues	[2]	$ 15,833	$ 12,654	$ 45,663	$ 39,456

[1] Other factory-built housing revenue from ancillary products and services including freight, used homes and other services.

[2] Other financial services revenue includes consumer finance and insurance revenue that is not within the scope of ASU 2014-09, Revenue from Contracts with Customers ("Topic 606").