Revenue from Contracts with Customers Disaggregation of Revenue (Details) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Mar. 30, 2019	Dec. 29, 2018	Sep. 29, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 30, 2017	Sep. 30, 2017	Jul. 01, 2017	Mar. 30, 2019	Mar. 31, 2018	Apr. 01, 2017
Disaggregation of Revenue
Net revenue		$ 241,113	$ 233,700	$ 241,530	$ 246,403	$ 242,529	$ 221,383	$ 200,507	$ 206,816	$ 962,746	$ 871,235	$ 773,797
Factory-built housing
Disaggregation of Revenue
Net revenue										905,726	815,519	720,971
Financial Services
Disaggregation of Revenue
Net revenue										57,020	$ 55,716	$ 52,826
HUD Code | Factory-built housing
Disaggregation of Revenue
Net revenue										727,950
Modular | Factory-built housing
Disaggregation of Revenue
Net revenue										90,636
Park Model RVs | Factory-built housing
Disaggregation of Revenue
Net revenue										38,057
Factory-built housing, other | Factory-built housing
Disaggregation of Revenue
Net revenue	[1]									49,083
Insurance Agency Commissions | Financial Services
Disaggregation of Revenue
Net revenue										3,065
Financial service, other | Financial Services
Disaggregation of Revenue
Net revenue										$ 53,955

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