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Consolidated Statements of Stockholders' Equity - USD ($)
shares in Thousands, $ in Thousands
Common Stock
Treasury Stock
Additional Paid-in Capital
Accumulated Other Comprehensive Loss
Retained Earnings
Cumulative Effect of Adoption Adjustment
Retained Earnings
Cumulative Effect of Adoption Adjustment
Total
Beginning Balance (ASU 2016-13) at Dec. 31, 2019         $ (3,832)   $ (3,832)  
Beginning Balance at Dec. 31, 2019 $ 531 $ (169,365) $ 270,923     $ 1,341,344   $ 1,443,433
Beginning Balance, shares at Dec. 31, 2019 53,054 4,949            
Comprehensive income           71,385   71,385
Common stock purchased for treasury   $ (60,737)           (60,737)
Common stock acquired, shares   787            
Restricted shares forfeited, shares   10            
Share-based compensation $ 1 $ (4,969) 2,655         (2,313)
Share-based compensation, shares 164 62            
Exercise of stock options     72         72
Exercise of stock options, shares 3              
Ending Balance (ASU 2016-13) at Mar. 31, 2020             $ (3,832)  
Ending Balance at Mar. 31, 2020 $ 532 $ (235,071) 273,650     1,408,897   1,448,008
Ending Balance, shares at Mar. 31, 2020 53,221 5,808            
Beginning Balance at Dec. 31, 2020 $ 533 $ (303,379) 282,467     1,594,708   1,574,329
Beginning Balance, shares at Dec. 31, 2020 53,277 6,628            
Comprehensive income       $ (120)   78,112   77,992
Common stock purchased for treasury   $ (56,348) (7,000)         (63,348)
Common stock acquired, shares   567            
Share-based compensation $ 1 $ (5,994) 3,018         (2,975)
Share-based compensation, shares 180 56            
Exercise of stock options $ 2   2,678         2,680
Exercise of stock options, shares 176              
Ending Balance at Mar. 31, 2021 $ 536 $ (365,721) $ 281,163 $ (120)   $ 1,672,820   $ 1,588,678
Ending Balance, shares at Mar. 31, 2021 53,633 7,251