Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 26, 2021	Sep. 27, 2020	Sep. 26, 2021	Sep. 27, 2020
Income Statement [Abstract]
Sales	$ 183,277	$ 147,801	$ 364,518	$ 290,973
Cost of sales	(145,990)	(115,004)	(288,257)	(227,200)
Gross profit	37,287	32,797	76,261	63,773
Selling, general and administrative expenses	(17,679)	(16,221)	(34,535)	(31,259)
Operating income	19,608	16,576	41,726	32,514
Interest expense, net	(329)	(339)	(678)	(719)
Other income	184	327	416	804
Income before income taxes	19,463	16,564	41,464	32,599
Income tax expense	(5,330)	(4,374)	(10,703)	(8,621)
Net income	$ 14,133	$ 12,190	$ 30,761	$ 23,978
Weighted average number of shares outstanding - basic	20,986,542	21,055,782	21,010,422	21,053,022
Weighted average number of shares outstanding - diluted	21,140,087	21,245,762	21,168,809	21,268,562
Basic earnings per share
Basic earnings per share	$ 0.67	$ 0.58	$ 1.46	$ 1.14
Diluted earnings per share
Diluted earnings per share	0.67	0.57	1.45	1.13
Cash dividends declared per common share	$ 0.13000	$ 0.11625	$ 0.25250	$ 0.23250