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Stockholders' Equity (Tables)
6 Months Ended
Jun. 30, 2020
Stockholders' Equity.  
Summary of share repurchase activity

Quarter ended June 30, 

Six months ended June 30, 

Cumulative

    

2020

    

2019

    

2020

    

2019

total (1)

(in thousands)

Shares of common stock repurchased

6,975

51

7,213

51

8,029

Cost of shares of common stock repurchased

$

237,162

$

1,056

$

241,283

$

1,056

$

256,231

(1)Amounts represent the total shares of common stock repurchased under the stock repurchase program through June 30, 2020.