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Selected Quarterly Financial Data (Unaudited)
12 Months Ended
Dec. 31, 2021
Quarterly Financial Information Disclosure [Abstract]  
Selected Quarterly Financial Data (Unaudited) Selected Quarterly Financial Data (Unaudited)
Fiscal Quarters Year Ended December 31, 2021FirstSecondThirdFourth
Revenues, net$608,623 $667,381 $755,477 $802,255 
Operating income265,965 297,612 338,687 340,292 
Net income184,239 196,247 234,007 225,004 
Earnings per share:
Basic earnings per share$2.21 $2.36 $2.86 $2.80 
Diluted earnings per share2.15 2.30 2.80 2.74 
Weighted average shares outstanding:
Basic shares83,475 83,141 81,836 80,228 
Diluted shares 85,764 85,295 83,716 81,981 

Fiscal Quarters Year Ended December 31, 2020FirstSecondThirdFourth
Revenues, net$661,093 $525,146 $585,283 $617,333 
Operating income200,983 212,811 264,532 293,939 
Net income147,060 158,488 188,817 209,851 
Earnings per share:
Basic earnings per share$1.73 $1.89 $2.26 $2.51 
Diluted earnings per share1.67 1.83 2.19 2.44 
Weighted average shares outstanding:
Basic shares84,902 83,895 83,719 83,514 
Diluted shares88,205 86,570 86,273 85,846 
The sum of the quarterly earnings per common share amounts for 2021 and 2020 may not equal the earnings per common share due to rounding.