OTHER BORROWINGS (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Summary of other borrowings [Abstract]
Advances from the FHLB	$ 30,000	$ 63,640
Federal funds purchased	0	25,000
Other	12	6
Total	30,012	88,646
Federal Home Loan Banks [Abstract]
Federal home loan bank stock	8,600
Unused borrowing capacity with FHLB	772,800
Interest expense on FHLB advances	500	700	$ 1,000
FHLB advances prepaid	$ 0	0	0
FHLB stock as percentages of outstanding advances	4.50%
Federal Home Loan Bank, Advances, Fiscal Year Maturity [Abstract]
Total FHLB advances, Amount	$ 30,000	$ 63,640
Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate of Amounts Due [Abstract]
Total FHLB advances, Rate	0.74%	1.47%
Short-term Debt [Abstract]
Interest expense on federal funds purchased	$ 10	$ 80	100
Available for sale and loans, pledged to secure other borrowings	$ 1,900,000
Minimum [Member]
Federal Home Loan Banks [Abstract]
Federal home loan bank, advances, interest rate	132.00%
FHLB stock as percentages of unpaid principal balance	0.75%
Maximum [Member]
Federal Home Loan Banks [Abstract]
Federal home loan bank, advances, interest rate	165.00%
Fixed-Rate Advances [Member]
Federal Home Loan Bank, Advances, Fiscal Year Maturity [Abstract]
2020		28,645
2022	$ 0	4,995
2026 and thereafter	$ 30,000	$ 30,000
Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate of Amounts Due [Abstract]
2020, Rate		2.19%
2022, Rate	0.00%	1.69%
2026 and thereafter, Rate	0.74%	0.74%
Federal Reserve Bank Advances [Member]
Short-term Debt [Abstract]
Borrowings	$ 0	$ 0
Average borrowings	1,546	$ 305	$ 3
Unused borrowing capacity	$ 492,000

Assets, including available for sale securities, pledged to secure borrowings.

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The carrying amount on the balance sheet date for the aggregate of borrowings owed by the reporting entity that may include Treasury Tax and Loan or other borrowings not otherwise defined in the taxonomy.

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Hair cut percentage used on qualifying mortgage and home equity loan collateral.

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The weighted average interest rate applicable to the Federal Home Loan Bank advances which are due as of the balance sheet date.

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Represents minimum percentage of unpaid principal balance of FHLB advances that needs to be held in the form of federal home loan bank stock.

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Amount of advances or credit lines available from the Federal Reserve Bank.

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Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages.

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Amount of short term borrowing where a bank borrows, at the federal funds rate, from another bank.

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

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Amount of repayments and penalties incurred in the satisfaction or roll-over of Federal Home Loan Bank (FHLB) advance.

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Weighted average interest rate of advance from Federal Home Loan Bank (FHLBank) due after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Weighted average interest rate of advance from Federal Home Loan Bank (FHLBank) due in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Weighted average interest rate of advance from Federal Home Loan Bank (FHLBank) due in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of advance from Federal Home Loan Bank (FHLBank) maturing after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of advance from Federal Home Loan Bank (FHLBank) maturing in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

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Gross expenses on the purchase of Federal funds at a specified price with a simultaneous agreement to sell the same to the same counterparty at a fixed or determinable price at a future date.

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Interest expense incurred during the reporting period on long-term borrowings associated with Federal Home Loan Bank and Federal Reserve Bank advances.

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