Revenue from Contracts with Customers (Disaggregation of Revenue) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Disaggregation of Revenue [Line Items]
Revenues		$ 257,976	$ 268,675	$ 512,777	$ 532,717
Factory-built housing
Disaggregation of Revenue [Line Items]
Revenues		240,967	252,690	479,057	501,458
Factory-built housing | HUD Code
Disaggregation of Revenue [Line Items]
Revenues		197,723	207,556	387,169	410,035
Factory-built housing | Modular
Disaggregation of Revenue [Line Items]
Revenues		20,483	19,412	41,266	38,819
Factory-built housing | Park Model RVs
Disaggregation of Revenue [Line Items]
Revenues		9,027	11,751	22,749	24,612
Factory-built housing | Product and Service, Other
Disaggregation of Revenue [Line Items]
Revenues	[1]	13,734	13,971	27,873	27,992
Financial Services
Disaggregation of Revenue [Line Items]
Revenues		17,009	15,985	33,720	31,259
Financial Services | Insurance Agency Commissions
Disaggregation of Revenue [Line Items]
Revenues		777	274	1,547	1,429
Financial Services | Financial Service, Other
Disaggregation of Revenue [Line Items]
Revenues	[2]	$ 16,232	$ 15,711	$ 32,173	$ 29,830

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