Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 29, 2019	Dec. 30, 2018	Dec. 29, 2019	Dec. 30, 2018
Income Statement [Abstract]
Sales	$ 120,406	$ 128,151	$ 407,785	$ 423,275
Cost of sales	(98,928)	(107,118)	(329,516)	(348,013)
Gross profit	21,478	21,033	78,269	75,262
Selling, general and administrative expenses	(14,702)	(14,312)	(44,355)	(44,232)
Operating income	6,776	6,721	33,914	31,030
Interest expense, net	(584)	(807)	(2,013)	(2,552)
Other income (expense)	131	(316)	274	(240)
Income before income taxes	6,323	5,598	32,175	28,238
Income tax expense	(1,776)	(1,468)	(8,571)	(7,576)
Net income	$ 4,547	$ 4,130	$ 23,604	$ 20,662
Weighted average number of shares outstanding - basic	10,546,453	10,667,001	10,575,432	10,663,807
Weighted average number of shares outstanding - diluted	10,605,895	10,712,027	10,656,115	10,727,377
Basic earnings per share
Basic earnings per share	$ 0.43	$ 0.39	$ 2.23	$ 1.94
Diluted earnings per share
Diluted earnings per share	0.43	0.39	2.22	1.93
Cash dividends declared per common share	$ 0.23	$ 0.225	$ 0.69	$ 0.45