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COMMITMENTS, CONTINGENT LIABILITIES AND RESTRICTIONS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Loss Contingency, Estimate [Abstract]
Contract amount of commitments and contingencies	$ 1,352,781	$ 1,181,652
Unused lines of credit	25,000
Federal Home Loan Bank unused borrowing capacity	1,660,000
Federal Reserve unused borrowing capacity	256,200
Litigation accrual	2,950	0	$ 0
Minimum [Member]
Loss Contingency, Estimate [Abstract]
Range of reasonably possible losses for such matters in the aggregate, beyond the existing recorded liability	0
Maximum [Member]
Loss Contingency, Estimate [Abstract]
Range of reasonably possible losses for such matters in the aggregate, beyond the existing recorded liability	1,000
Commitments to Extend Credit [Member]
Loss Contingency, Estimate [Abstract]
Contract amount of commitments and contingencies	1,313,568	1,143,780
Standby Letters of Credit [Member]
Loss Contingency, Estimate [Abstract]
Contract amount of commitments and contingencies	$ 39,213	$ 37,872

X

- Definition

States the total dollar amount of advances or credit lines available as of the Balance Sheet date from the Federal Reserve.

+ References

No definition available.

+ Details

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- Definition

The face amount of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.

+ References

No definition available.

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- Definition

Amount of advances or credit lines available from the Federal Home Loan Bank (FHLB).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

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- Definition

Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees.

+ References

No definition available.

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- Definition

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
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