Property Plant, and Equipment - Summary of Components of Property, Plant, and Equipment (Detail) - USD ($) $ in Thousands	Sep. 29, 2018	Mar. 31, 2018
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	$ 162,239	$ 113,093
Less accumulated depreciation	50,289	45,133
Property, plant, and equipment, net	111,950	67,960
Land and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	34,927	22,071
Building and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	85,665	58,179
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	38,912	31,924
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	$ 2,735	$ 919