Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 03, 2020	Sep. 28, 2019	Oct. 03, 2020	Sep. 28, 2019
Income Statement [Abstract]
Net sales	$ 238,033	$ 197,823	$ 661,020	$ 570,130
Cost of sales	151,097	127,828	418,494	365,925
Gross profit	86,936	69,995	242,526	204,205
Selling, general and administrative expenses	56,659	44,564	164,848	132,604
Impairment of trade name			8,000
Restructuring costs and charges	321		4,227
Income from operations	29,956	25,431	65,451	71,601
Interest expense, net	6,954	6,452	20,979	19,922
Income before income taxes	23,002	18,979	44,472	51,679
Income tax expense	5,680	3,873	9,351	11,271
Net income	$ 17,322	$ 15,106	$ 35,121	$ 40,408
Net income per common share:
Basic	$ 0.29	$ 0.26	$ 0.60	$ 0.69
Diluted	$ 0.29	$ 0.26	$ 0.59	$ 0.68
Weighted average shares outstanding:
Basic	58,963	58,433	58,858	58,320
Diluted	59,442	59,142	59,291	59,192