Quarterly Results of Operations (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2020

The unaudited quarterly results of operations for the years ended December 31, 2020 and 2019 are as follows:


	2020 Quarters (1)								2019 Quarters (1)
	First		Second		Third		Fourth		First		Second		Third		Fourth
	(In thousands, except per share amounts)
Net sales	$	594,462	$	561,249	$	581,113	$	614,822	$	622,231	$	642,099	$	624,246	$	605,997
Gross profit	271,956		234,800		251,500		269,168		283,834		292,337		281,978		266,885
Operating income	139,941		110,594		131,213		138,965		147,782		155,283		141,765		134,173
Net income (2)	101,998		70,864		103,848		101,068		110,268		113,209		105,194		96,850
Basic EPS	$	1.35	$	0.94	$	1.38	$	1.33	$	1.46	$	1.50	$	1.39	$	1.28
Diluted EPS	$	1.33	$	0.93	$	1.37	$	1.32	$	1.44	$	1.48	$	1.37	$	1.26
Basic weighted average shares outstanding	75,740		75,171		75,352		75,817		75,442		75,460		75,698		75,779
Diluted weighted average shares outstanding	76,452		75,937		75,960		76,367		76,284		76,387		76,577		76,570

(1) Quarterly data includes the acquisition of Flow MD (February 2020) and Velcora (July 2019) from the date of acquisition. See Note 2 for further discussion.
(2) Decline in second quarter net sales and net income is primarily attributed to impacts of COVID-19.