Selected Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2020

Quarterly Financial Information Disclosure [Abstract]

Schedule of Selected Quarterly Financial Data

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