DERIVATIVES - Derivatives Recorded at Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Derivative [Line Items]
Derivative assets	$ 194,507	$ 138,173
Derivative liabilities	57,224	34,583
Interest rate swaps
Derivative [Line Items]
Derivative asset, variation margin accounts	776,100	60,700
Interest rate swaps | Other assets
Derivative [Line Items]
Derivative assets	104	52
Interest rate lock commitments | Other assets
Derivative [Line Items]
Derivative assets	73,784	114,871
Interest rate lock commitments | Accrued expenses and other liabilities
Derivative [Line Items]
Derivative liabilities	12,210	3,093
TBAs | Other assets
Derivative [Line Items]
Derivative assets	120,619	15,472
TBAs | Accrued expenses and other liabilities
Derivative [Line Items]
Derivative liabilities	45,014	31,490
Options on treasury futures | Other assets
Derivative [Line Items]
Derivative assets	$ 0	$ 7,778