DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Summary of Derivative Financial Instruments (Details) - Mortgages - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Other Assets
Derivative [Line Items]
Derivative, fair value	$ 11,940	$ 51,756
Other Liabilities
Derivative [Line Items]
Derivative, fair value	710	16,415
Interest rate lock commitments \| Other Assets
Derivative [Line Items]
Derivative, notional amount	417,126	1,199,939
Derivative, fair value	11,940	51,756
Forward contracts related to mortgage loans held for sale
Derivative [Line Items]
Derivative, notional amount	1,940,000	2,130,000
Forward contracts related to mortgage loans held for sale \| Other Liabilities
Derivative [Line Items]
Derivative, notional amount	1,935,237	2,128,000
Derivative, fair value	$ 710	$ 16,415

Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 45
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Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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