EARNINGS PER SHARE - Basic And Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Basic, numerator:
Net income, Basic	$ 102,461	$ 60,981	$ 172,030	$ 84,342
Basic, denominator:
Weighted-average shares	24,607,362	25,586,353	24,658,739	25,522,453
Earnings per common share (in dollars per share)	$ 4.16	$ 2.38	$ 6.98	$ 3.30
Diluted, numerator:
Net income, Diluted	$ 102,461	$ 60,981	$ 172,030	$ 84,342
Diluted, denominator:
Weighted-average shares	24,607,362	25,586,353	24,658,739	25,522,453
Effect of dilutive securities	988,669	1,324,443	1,097,575	1,403,680
Adjusted weighted-average shares and assumed conversions	25,596,031	26,910,796	25,756,314	26,926,133
Earnings per common share (in dollars per share)	$ 4.00	$ 2.27	$ 6.68	$ 3.13