NET INCOME PER COMMON SHARE - Reconciliation of Basic and Diluted Net Income Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Net Income Available to Common Stockholders
Net income available to common stockholders	$ 63,283	$ 52,770	$ 150,391	$ 157,798
Diluted net income per common share	$ 63,283	$ 52,770	$ 150,391	$ 157,798
Weighted-Average Common Shares
Net income available to common stockholders (in shares)	59,096,688	53,766,630	57,200,843	53,883,945
Effect of potentially dilutive stock options and restricted stock awards (in shares)	242,041	193,135	266,716	209,118
Diluted net income per common share (in shares)	59,338,729	53,959,765	57,467,559	54,093,063
Per Share Amount
Net income available to common stockholders (in dollars per share)	$ 1.08	$ 0.98	$ 2.63	$ 2.93
Diluted net income per common share (in dollars per share)	$ 1.08	$ 0.98	$ 2.62	$ 2.92