Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Jul. 01, 2018	Jul. 02, 2017
Income Statement [Abstract]
Sales	$ 149,800	$ 133,731
Cost of sales	(121,343)	(107,732)
Gross profit	28,457	25,999
Selling, general and administrative expenses	(14,979)	(15,766)
Operating income	13,478	10,233
Interest expense, net	(936)	(750)
Income before income taxes	12,542	9,483
Income tax expense	(3,419)	(3,652)
Net income	$ 9,123	$ 5,831
Weighted average number of shares outstanding - basic	10,648,226	10,582,989
Weighted average number of shares outstanding - diluted	10,682,060	10,615,692
Basic earnings per share
Basic earnings per share	$ 0.86	$ 0.55
Diluted earnings per share
Diluted earnings per share	0.85	0.55
Cash dividends declared per common share	$ 0	$ 0