Revenue Recognition - Summary of Corporate Net Sales (Detail) - 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]
Consolidated Net Sales	$ 355,436	$ 259,963	$ 677,697	$ 504,065
U.S Factory-built Housing [Member]
Disaggregation of Revenue [Line Items]
Consolidated Net Sales	306,615		572,739
Canadian Factory-built Housing [Member]
Disaggregation of Revenue [Line Items]
Consolidated Net Sales	25,401		52,755
Corporate Other [Member]
Disaggregation of Revenue [Line Items]
Consolidated Net Sales	23,420		52,203
Manufacturing and Retail [Member]
Disaggregation of Revenue [Line Items]
Consolidated Net Sales	327,418		615,558
Manufacturing and Retail [Member] | U.S Factory-built Housing [Member]
Disaggregation of Revenue [Line Items]
Consolidated Net Sales	302,017		562,803
Manufacturing and Retail [Member] | Canadian Factory-built Housing [Member]
Disaggregation of Revenue [Line Items]
Consolidated Net Sales	25,401		52,755
Commercial [Member]
Disaggregation of Revenue [Line Items]
Consolidated Net Sales	4,598		9,936
Commercial [Member] | U.S Factory-built Housing [Member]
Disaggregation of Revenue [Line Items]
Consolidated Net Sales	4,598		9,936
Transportation [Member]
Disaggregation of Revenue [Line Items]
Consolidated Net Sales	23,420		52,203
Transportation [Member] | Corporate Other [Member]
Disaggregation of Revenue [Line Items]
Consolidated Net Sales	$ 23,420		$ 52,203