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Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2023
Accounting Policies [Abstract]  
Number of Weighted Average Shares The number of weighted average shares used in the calculation of basic earnings per share and diluted earnings per share was as follows for the years ended December 31:
202320222021
(In thousands)
Weighted average shares:
Basic shares230,519 230,208 230,955 
Equity-based compensation plans990 1,328 1,858 
Diluted shares231,509 231,536 232,813