Business Combination - Summary of Results of Operation as Reported and Proforma Basis (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 29, 2018	Dec. 30, 2017
Business Acquisition [Line Items]
Net sale, Reported	$ 354,671,000	$ 294,378,000	$ 1,032,368,000	$ 798,443,000
Net income (loss), Proforma	$ 0
Skyline [Member]
Business Acquisition [Line Items]
Net sale, Reported		294,378,000	1,032,368,000	798,443,000
Net income (loss), Reported		5,393,000	(67,365,000)	18,064,000
Net sale, Proforma		350,913,000	1,078,172,000	972,903,000
Net income (loss), Proforma		$ 8,421,000	$ (52,256,000)	$ 22,281,000