Segment Information - Schedule of Financial Information by Reportable Segments (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 26, 2020	Dec. 28, 2019	Dec. 26, 2020	Dec. 28, 2019	Mar. 28, 2020
Segment Reporting Information [Line Items]
Net sales	$ 377,581	$ 342,239	$ 973,232	$ 1,068,585
Operating income (loss)	27,498	23,664	62,114	73,637
Other income	(180)		(6,993)
Depreciation	3,025	3,171	8,994	9,826
Amortization	(1,361)	(1,345)	(4,082)	(4,069)
Amortization of intangible assets	1,400	1,400	4,082	4,069
Assets	825,865		825,865		$ 781,700
U.S Factory-built Housing [Member]
Segment Reporting Information [Line Items]
Net sales	336,358	304,818	868,577	949,253
Canadian Factory-built Housing [Member]
Segment Reporting Information [Line Items]
Net sales	26,351	22,809	66,104	72,916
Operating Segments [Member] | U.S Factory-built Housing [Member]
Segment Reporting Information [Line Items]
Net sales	336,358	304,818	868,577	949,253
Operating income (loss)	35,538	33,165	88,628	104,624
Depreciation	2,378	2,659	7,167	8,365
Amortization of intangible assets	1,361	1,345	4,082	4,069
Capital expenditures	1,234	1,981	3,173	9,483
Assets	482,043		482,043		491,110
Operating Segments [Member] | Canadian Factory-built Housing [Member]
Segment Reporting Information [Line Items]
Net sales	26,351	22,809	66,104	72,916
Operating income (loss)	2,933	1,786	13,790	9,085
Depreciation	246	255	609	744
Capital expenditures	312	414	554	842
Assets	77,113		77,113		56,760
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Net sales	14,872	14,612	38,551	46,416
Operating income (loss)	(6,407)	(6,771)	(20,235)	(26,177)
Depreciation	401	257	1,218	717
Capital expenditures	137	306	508	1,785
Assets	266,709		266,709		233,830
Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
Net sales	377,581	342,239	973,232	1,068,585
Operating income (loss)	27,498	23,664	62,114	73,637
Depreciation	3,025	3,171	8,994	9,826
Amortization of intangible assets	1,361	1,345	4,082	4,069
Capital expenditures	1,683	$ 2,701	4,235	$ 12,110
Assets	$ 825,865		$ 825,865		$ 781,700