Quarterly Results of Operations (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2019

Quarterly Financial Information Disclosure [Abstract]

Summarized Quarterly Results of Operations

The unaudited quarterly results of operations for the years ended December 31, 2019 and 2018 are as follows:

	2019 Quarters (1)								2018 Quarters (1)
	First		Second		Third		Fourth		First		Second		Third		Fourth
	(In thousands, except per share amounts)
Net sales	$	622,231	$	642,099	$	624,246	$	605,997	$	612,324	$	634,360	$	622,888	$	614,094
Gross profit	283,834		292,337		281,978		266,885		276,652		287,367		280,233		273,643
Operating income	147,782		155,283		141,765		134,173		136,683		147,831		145,133		139,441
Net income	110,268		113,209		105,194		96,850		98,958		107,126		106,352		98,137
Basic EPS	$	1.46	$	1.50	$	1.39	$	1.28	$	1.29	$	1.40	$	1.39	$	1.29
Diluted EPS	$	1.44	$	1.48	$	1.37	$	1.26	$	1.27	$	1.38	$	1.37	$	1.27
Basic weighted average shares outstanding	75,442		75,460		75,698		75,779		76,419		76,539		76,562		76,128
Diluted weighted average shares outstanding	76,284		76,387		76,577		76,570		77,739		77,704		77,709		77,100
(1) Quarterly data includes acquisition of Finger Lakes Instrumentation (July 2018) and Velcora Holding AB (July 2019) from the date of acquisition. See Note 2 for further discussion.