DERIVATIVES - Schedule of Derivatives (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Derivative assets	$ 138,173	$ 290,144
Derivative liabilities	34,583	119,762
Interest rate swaps
Derivative [Line Items]
Derivative assets	52	0
Derivative liabilities	0	25
Variation margin accounts	60,700	237,700
Interest rate lock commitments
Derivative [Line Items]
Derivative assets	114,871	289,355
Derivative liabilities	3,093	281
Treasury futures and options on treasury futures
Derivative [Line Items]
Derivative assets	7,778	0
TBAs
Derivative [Line Items]
Derivative assets	15,472	789
Derivative liabilities	$ 31,490	$ 119,456