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Stockholders' Equity (Tables)
3 Months Ended
Mar. 31, 2022
Stockholders' Equity.  
Summary of share repurchase activity

Quarter ended March 31, 

Cumulative

2022

    

2021

    

total (1)

(in thousands)

Shares of common stock repurchased

2,320

4,653

27,394

Cost of shares of common stock repurchased

$

141,412

$

288,519

$

1,452,033

(1)Amounts represent the total shares of common stock repurchased under the stock repurchase program from inception through March 31, 2022.