Selected Quarterly Financial Data (Unaudited)

12 Months Ended

Dec. 31, 2020

Quarterly Financial Information Disclosure [Abstract]

Selected Quarterly Financial Data (Unaudited)

Selected Quarterly Financial Data (Unaudited)

Fiscal Quarters Year Ended December 31, 2020	First		Second		Third		Fourth
Revenues, net	$	661,093	$	525,146	$	585,283	$	617,333
Operating income	200,983		212,811		264,532		293,939
Net income	147,060		158,488		188,817		209,851
Basic earnings per share	$	1.73	$	1.89	$	2.26	$	2.51
Diluted earnings per share	1.67		1.83		2.19		2.44
Weighted average shares outstanding:
Basic shares	84,902		83,895		83,719		83,514
Diluted shares	88,205		86,570		86,273		85,846

Fiscal Quarters Year Ended December 31, 2019	First		Second		Third		Fourth
Revenues, net	$	621,825	$	647,094	$	681,048	$	698,881
Operating income	284,176		297,317		329,141		320,796
Net income	172,107		261,651		225,805		235,510
Earnings per share:
Basic earnings per share	$	2.00	$	3.03	$	2.61	$	2.72
Diluted earnings per share	1.93		2.90		2.49		2.60
Weighted average shares outstanding:
Basic shares	85,941		86,360		86,662		86,600
Diluted shares	89,244		90,131		90,522		90,427

The sum of the quarterly earnings per common share amounts for 2020 and 2019 may not equal the earnings per common share due to rounding.

The fourth quarter of 2019 includes: a gain of $13.0 million related to the fair value adjustment of a minority investment, a write-off of property, plant and equipment costs of $1.8 million and restructuring related costs of $2.8 million.