Interim Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2019

Quarterly Financial Information Disclosure [Abstract]

Summary of Interim Financial Data

	Three Months Ended
	December 31, 2019		September 30, 2019		June 30, 2019		March 31, 2019		December 31, 2018		September 30, 2018		June 30, 2018		March 31, 2018
	(In thousands, except share and per share data)
Net sales	$	164,772	$	194,551	$	206,453	$	179,571	$	139,971	$	166,380	$	206,692	$	171,207
Gross profit	$	71,263	$	82,431	$	83,444	$	69,365	$	59,856	$	67,210	$	91,115	$	76,713
Net income	$	35,497	$	41,976	$	35,710	$	31,555	$	25,171	$	29,471	$	42,820	$	37,110
Basic earnings per common share	$	0.61	$	0.72	$	0.61	$	0.54	$	0.43	$	0.50	$	0.73	$	0.63
Basic weighted average common shares outstanding		58,295,717		58,400,060		58,486,192		58,543,478		58,603,537		58,741,973		58,760,753		58,855,156
Diluted earnings per common share	$	0.61	$	0.72	$	0.61	$	0.54	$	0.43	$	0.50	$	0.73	$	0.63
Diluted weighted average common shares outstanding		58,512,733		58,604,603		58,687,540		58,829,177		58,936,795		59,084,117		59,051,413		59,199,622