VARIABLE INTEREST ENTITIES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Variable Interest Entity [Line Items]
Cash and cash equivalents	$ 1,875,064	$ 1,645,805
Premises and equipment, net	160,651	165,655
Other assets	313,854	281,903
Total assets	15,552,657	13,931,094	$ 11,410,295
Accrued interest and other liabilities	210,797	230,724
Total liabilities	$ 13,451,850	11,826,987
Variable Interest Entity, Primary Beneficiary [Member] | 706 North Clinton [Member]
Variable Interest Entity [Line Items]
Percentage of membership interest	50.00%
Cash and cash equivalents	$ 198	157
Premises and equipment, net	5,618	5,782
Other assets	57	48
Total assets	5,873	5,987
Accrued interest and other liabilities	0	$ 0
Minority interest	2,900
Loss of minority interest	4,200
Minority interest loss exposure related to financing agreement	$ 1,200