DERIVATIVE FINANCIAL INSTRUMENTS - Effect of Derivative Instruments on the Income Statement (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Derivative [Line Items]
Amount of Gain Recognized in OCI on Derivative (Effective Portion)		$ 1,585
Derivatives not designated as hedging instruments
Derivative [Line Items]
Amount of Gain or (Loss) Recognized in Income	$ 2,859	(996)
Interest Rate Products \| Interest income
Derivative [Line Items]
Amount of Gain Recognized in OCI on Derivative (Effective Portion)		1,585
Interest rate lock commitments with customers \| Derivatives not designated as hedging instruments \| Mortgage banking activities, net
Derivative [Line Items]
Amount of Gain or (Loss) Recognized in Income	(3,264)	3,049
Forward sale commitments \| Derivatives not designated as hedging instruments \| Mortgage banking activities, net
Derivative [Line Items]
Amount of Gain or (Loss) Recognized in Income	$ 6,123	$ (4,045)

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5618551-113959

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No definition available.

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Amount, after tax and before reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 10A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669646-108580

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e637-108580

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