Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jul. 01, 2017
Income Statement [Abstract]
Net sales	$ 175,985	$ 163,897
Cost of sales	108,246	101,881
Gross margin	67,739	62,016
Operating expenses:
Selling, general and administrative	29,575	27,778
Other, net	2,166	2,279
Total operating expenses	31,741	30,057
Operating income	35,998	31,959
Interest expense, net	1,711	2,029
Other non-operating expense	1,034	531
Income before income taxes	33,253	29,399
Provision for income taxes	5,786	7,590
Net income	$ 27,467	$ 21,809
Net income per common share:
Basic (in dollars per share)	$ 1.14	$ 0.92
Diluted (in dollars per share)	$ 1.12	$ 0.90
Weighted average common shares:
Basic (in shares)	24,140,778	23,805,138
Diluted (in shares)	24,543,589	24,189,375