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NET INCOME PER SHARE - Basic and Diluted Net Income Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Sep. 30, 2022
Sep. 30, 2021
Basic net income per share:                
Net income $ 49,915 $ 44,788 $ 32,901 $ 43,229 $ 35,068 $ 45,394 $ 127,604 $ 123,691
Weighted average common shares outstanding - Basic (in shares) 83,042     84,754     82,955 84,647
Basic net income per common share (in dollars per share) $ 0.60     $ 0.51     $ 1.54 $ 1.46
Diluted net income per share:                
Net income $ 49,915 $ 44,788 $ 32,901 $ 43,229 $ 35,068 $ 45,394 $ 127,604 $ 123,691
Weighted average common shares outstanding - Basic (in shares) 83,042     84,754     82,955 84,647
Effect of dilutive securities:                
Stock options and restricted stock (in shares) 357     693     521 744
Weighted average common shares for diluted earnings per share (in shares) 83,399     85,447     83,476 85,391
Diluted net income per common share (in dollars per share) $ 0.60     $ 0.51     $ 1.53 $ 1.45