Revenue from Contracts with Customers (Disaggregation of Revenue) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018
Disaggregation of Revenue [Line Items]
Revenues		$ 268,675	$ 241,530	$ 532,717	$ 487,933
Factory-built housing
Disaggregation of Revenue [Line Items]
Revenues		252,690	227,094	501,458	459,856
Factory-built housing | HUD Code
Disaggregation of Revenue [Line Items]
Revenues		207,556	184,687	410,035	371,003
Factory-built housing | Modular
Disaggregation of Revenue [Line Items]
Revenues		19,412	23,901	38,819	46,348
Factory-built housing | Park Model RVs
Disaggregation of Revenue [Line Items]
Revenues		11,751	5,979	24,612	17,706
Factory-built housing | Product and Service, Other
Disaggregation of Revenue [Line Items]
Revenues	[1]	13,971	12,527	27,992	24,799
Financial Services
Disaggregation of Revenue [Line Items]
Revenues		15,985	14,436	31,259	28,077
Financial Services | Insurance Agency Commissions
Disaggregation of Revenue [Line Items]
Revenues		274	643	1,429	1,275
Financial Services | Financial Service, Other
Disaggregation of Revenue [Line Items]
Revenues	[2]	$ 15,711	$ 13,793	$ 29,830	$ 26,802

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

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