ACQUISITIONS - Pro Forma Financial Information (Details) - Level One - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Total revenue (net interest income plus other income)	$ 169,923	$ 476,074	$ 621,946
Net income	63,752	148,280	237,031
Net income available to common stockholders	$ 63,283	$ 146,873	$ 235,156
Earnings per common share:
Basic (in dollars per share)	$ 1.08	$ 2.49	$ 3.96
Diluted (in dollars per share)	$ 1.08	$ 2.48	$ 3.95