Quarterly report pursuant to Section 13 or 15(d)

STOCKHOLDERS' EQUITY - Summary of Changes in Shareholders' Equity (Details)

v3.21.1
STOCKHOLDERS' EQUITY - Summary of Changes in Shareholders' Equity (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
Beginning balance (in shares) 37,512,127  
Beginning balance $ 2,347,868 $ 1,973,990
Net earnings 131,843 71,152
Stock-based compensation expense 5,367 6,437
Issuance of stock 0 0
Share repurchases $ (8,385) (60,813)
Ending balance (in shares) 37,846,856  
Ending balance $ 2,476,693 $ 1,990,766
Common Stock [Member]    
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
Beginning balance (in shares) 37,512,000 38,199,000
Beginning balance $ 375 $ 382
Issuance of stock (in shares) 435,000 398,000
Issuance of stock $ 4 $ 4
Share repurchases (in shares) (100,000) (1,000,000)
Share repurchases $ (1) $ (10)
Ending balance (in shares) 37,847,000 37,597,000
Ending balance $ 378 $ 376
Additional Paid-in Capital [Member]    
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
Beginning balance 455,762 505,352
Stock-based compensation expense 5,367 6,437
Issuance of stock (4) (4)
Share repurchases (8,384) (60,803)
Ending balance 452,741 450,982
Retained Earnings [Member]    
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
Beginning balance 1,891,731 1,468,256
Net earnings 131,843 71,152
Ending balance $ 2,023,574 $ 1,539,408