Quarterly Information-Unaudited (Tables)

12 Months Ended

Dec. 31, 2020

Selected Quarterly Financial Information [Abstract]

Quartely Information

	Fiscal quarter ended
(In thousands, except per share data)	March 28, 2020		June 27, 2020		September 26, 2020		December 31, 2020
Net sales	$	412,327	$	448,405	$	480,987	$	517,594
Gross profit	185,478		207,372		226,000		230,872
Net income	61,006		68,036		79,303		86,624
Basic net income per common share	0.45		0.51		0.59		0.64
Diluted net income per common share	0.45		0.50		0.58		0.63

	Fiscal quarter ended
(In thousands, except per share data)	March 30, 2019		June 29, 2019		September 28, 2019		December 31, 2019
Net sales	$	391,047	$	378,874	$	394,147	$	426,998
Gross profit	177,393		166,274		170,350		197,636
Net income	32,658		123,997		40,767		57,438
Basic net income per common share	0.24		0.92		0.30		0.43
Diluted net income per common share	0.24		0.91		0.30		0.42