Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2019	Jul. 01, 2018
Income Statement [Abstract]
Sales	$ 147,336	$ 149,800
Cost of sales	(118,539)	(121,343)
Gross profit	28,797	28,457
Selling, general and administrative expenses	(14,836)	(14,979)
Operating income	13,961	13,478
Interest expense, net	(763)	(934)
Other income (expense)	117	(2)
Income before income taxes	13,315	12,542
Income tax expense	(3,508)	(3,419)
Net income	$ 9,807	$ 9,123
Weighted average number of shares outstanding - basic	10,604,306	10,648,226
Weighted average number of shares outstanding - diluted	10,665,709	10,682,060
Basic earnings per share
Basic earnings per share	$ 0.92	$ 0.86
Diluted earnings per share
Diluted earnings per share	0.92	0.85
Cash dividends declared per common share	$ 0.23	$ 0