Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Income Statement [Abstract]
Net sales	$ 243,791	$ 227,262
Cost of goods sold	156,299	138,627
Gross profit	87,492	88,635
Selling, general and administrative expenses	57,750	48,641
Income from operations	29,742	39,994
Other income, net	29	152
Income before income taxes	29,771	40,146
Provision for income taxes	6,364	9,499
Net income	$ 23,407	$ 30,647
Earnings Per Share:
Basic	$ 0.71	$ 0.93
Diluted	$ 0.71	$ 0.93
Weighted Average Shares Outstanding:
Basic	32,801	32,917
Diluted	32,889	33,003