Property Plant, and Equipment - Summary of Components of Property, Plant, and Equipment (Detail) - USD ($) $ in Thousands	Dec. 29, 2018	Mar. 31, 2018
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	$ 164,241	$ 113,093
Less accumulated depreciation	52,881	45,133
Property, plant, and equipment, net	111,360	67,960
Land and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	34,797	22,071
Building and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	85,863	58,179
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	40,459	31,924
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, at cost	$ 3,122	$ 919