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Stockholders' Equity and Stock-Based Compensation Plans (Tables)
6 Months Ended
Jun. 30, 2022
Share-Based Payment Arrangement [Abstract]  
Schedule of Total Stock-based Compensation Expense
A summary of the Companys total stock-based compensation expense, including expense associated with the CEO Retirement Accelerated Stock-Based Compensation Expense, is presented below:
Three Months EndedSix Months Ended
June 30,June 30,

2022202120222021
(in thousands)
Total stock-based compensation expense$20,963 $12,407 $34,675 $23,167