Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Apr. 01, 2017
Property, plant and equipment
Property, plant and equipment, at cost	$ 81,909	$ 78,695
Accumulated depreciation	(23,195)	(21,731)
Property, plant and equipment, net	58,714	56,964
Land [Member]
Property, plant and equipment
Property, plant and equipment, at cost	23,276	22,897
Buildings and improvements [Member]
Property, plant and equipment
Property, plant and equipment, at cost	36,099	34,180
Machinery and equipment [Member]
Property, plant and equipment
Property, plant and equipment, at cost	$ 22,534	$ 21,618