Revenue from Contracts with Customers Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017
Disaggregation of Revenue [Line Items]
Revenues	$ 241,530	$ 200,507	$ 487,933	$ 407,323
Factory-built housing
Disaggregation of Revenue [Line Items]
Revenues	227,094	187,380	459,856	380,262
Factory-built housing | HUD Code [Member]
Disaggregation of Revenue [Line Items]
Revenues	184,687		371,003
Factory-built housing | Modular
Disaggregation of Revenue [Line Items]
Revenues	23,901		46,348
Factory-built housing | Park Model RVs
Disaggregation of Revenue [Line Items]
Revenues	5,979		17,706
Factory-built housing | Product and Service, Other
Disaggregation of Revenue [Line Items]
Revenues	12,527		24,799
Financial Services
Disaggregation of Revenue [Line Items]
Revenues	14,436	$ 13,127	28,077	$ 27,061
Financial Services | Insurance Agency Commissions
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	643		1,275
Financial Services | Financial Service, Other
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	$ 13,793		$ 26,802