Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Dec. 28, 2019	Mar. 30, 2019
Property, plant and equipment
Property, plant and equipment, at cost	$ 102,787	$ 91,388
Accumulated depreciation	(31,380)	(27,904)
Property, plant and equipment, net	71,407	63,484
Land
Property, plant and equipment
Property, plant and equipment, at cost	21,723	21,359
Buildings and improvements
Property, plant and equipment
Property, plant and equipment, at cost	50,914	42,976
Machinery and equipment
Property, plant and equipment
Property, plant and equipment, at cost	$ 30,150	$ 27,053