Quarterly Information-Unaudited (Tables)

12 Months Ended

Dec. 31, 2019

Selected Quarterly Financial Information [Abstract]

Quartely Information

	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

	Fiscal quarter ended
(In thousands, except per share data)	March 31, 2018		June 30, 2018		September 29, 2018		December 31, 2018
Net sales	$	367,199	$	383,059	$	398,597	$	401,642
Gross profit	175,997		182,378		181,716		179,740
Net income	57,562		54,349		48,060		80,784
Basic net income per common share	0.41		0.38		0.34		0.58
Diluted net income per common share	0.40		0.38		0.34		0.57