Condensed Consolidated Statements of Income (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Mar. 29, 2015	Mar. 30, 2014	Mar. 31, 2013
Income Statement [Abstract]
Sales	$ 364,023	$ 348,263	$ 350,387
Cost of sales	(298,232)	(286,663)	(286,241)
Pension withdrawal	0	0	(7,210)
Gross profit	65,791	61,600	56,936
Selling, general and administrative expenses	(35,375)	(33,510)	(31,606)
Operating income	30,416	28,090	25,330
Interest income (expense), net	38	(29)	84
Income from continuing operations before income taxes	30,454	28,061	25,414
Income tax provision	11,240	9,967	8,306
Income from continuing operations	19,214	18,094	17,108
Income from discontinued operations, net of tax	0	0	18
Net income	$ 19,214	$ 18,094	$ 17,126
Weighted average number of shares outstanding-basic	10,568,582	10,544,467	10,464,820
Weighted average number of shares outstanding-diluted	10,633,554	10,599,755	10,541,142
Basic earnings per share:
Earnings per share from continuing operations	$ 1.82	$ 1.72	$ 1.64
Earnings per share from discontinued operations	$ 0.00	$ 0.00	$ 0.00
Basic earnings per share	$ 1.82	$ 1.72	$ 1.64
Diluted earnings per share
Earnings per share from continuing operations	$ 1.81	$ 1.71	$ 1.62
Earnings per share from discontinued operations	$ 0.00	$ 0.00	$ 0.00
Diluted earnings per share	$ 1.81	$ 1.71	$ 1.62
Cash dividends declared per common share	$ 0.76	$ 0.72	$ 0.68