FAIR VALUE OF FINANCIAL ASSETS AND LIABILITIES (Schedule of Carrying Amount and Estimated Fair Value of Financial Instruments) (Details) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Loans, weighted average discount rate, percent	4.53%	4.53%
Time deposits, weighted average discount rate, percent	0.31%	0.31%
Long-term debt, weighted average interest rate	5.82%	5.82%
Financial assets
Cash and due from banks	$ 116,009,000	$ 116,009,000	$ 97,546,000
Interest-bearing deposits in other banks	224,469,000	224,469,000	6,521,000
Loans held for sale	5,361,000	5,361,000	16,687,000
Accrued interest receivable	19,014,000	19,014,000	20,224,000
Deposits:
Noninterest-bearing deposits	2,203,806,000	2,203,806,000	1,790,269,000
Time deposits	803,128,000	803,128,000	898,918,000
Transfers of financial assets (liability) out of Level 3	0	0
Interest rate lock commitments
Deposits:
Derivatives, Notional Amount	779,000	779,000	714,000
Forward sale commitments
Deposits:
Derivatives, Notional Amount	4,945,000	4,945,000	16,603,000
Commitments to extend credit
Deposits:
Off-balance sheet financial instruments, Notional Amount	1,308,203,000	1,308,203,000	1,176,065,000
Standby letters of credit and financial guarantees written
Deposits:
Off-balance sheet financial instruments, Notional Amount	11,456,000	11,456,000	10,544,000
Risk participation agreements
Deposits:
Derivatives, Notional Amount	37,647,000	37,647,000	37,762,000
Carrying Amount
Financial assets
Cash and due from banks	116,009,000	116,009,000	97,546,000
Interest-bearing deposits in other banks	224,469,000	224,469,000	6,521,000
Investment securities	1,408,918,000	1,408,918,000	1,183,960,000
Loans held for sale	5,361,000	5,361,000	16,687,000
Net loans and leases	4,999,537,000	4,999,537,000	4,880,844,000
Accrued interest receivable	19,014,000	19,014,000	20,224,000
Deposits:
Noninterest-bearing deposits	2,203,806,000	2,203,806,000	1,790,269,000
Interest-bearing demand and savings deposits	3,390,225,000	3,390,225,000	3,106,931,000
Time deposits	803,128,000	803,128,000	898,918,000
Short-term debt			22,000,000
Long-term debt	105,495,000	105,495,000	105,385,000
Interest Payable	1,142,000	1,142,000	1,727,000
Carrying Amount | Interest rate lock commitments
Deposits:
Derivative liabilities	14,000	14,000	18,000
Carrying Amount | Commitments to extend credit
Deposits:
Off-balance sheet financial instruments	0	0	0
Carrying Amount | Standby letters of credit and financial guarantees written
Deposits:
Off-balance sheet financial instruments	0	0	0
Carrying Amount | Risk participation agreements
Deposits:
Assets, Fair Value Disclosure, Recurring (Deprecated 2018-01-31)	(22,000)	(22,000)	(48,000)
Estimated Fair Value
Financial assets
Cash and due from banks	116,009,000	116,009,000	97,546,000
Interest-bearing deposits in other banks	224,469,000	224,469,000	6,521,000
Investment securities	1,408,918,000	1,408,918,000	1,183,960,000
Loans held for sale	5,361,000	5,361,000	16,687,000
Net loans and leases	4,882,130,000	4,882,130,000	4,795,776,000
Accrued interest receivable	19,014,000	19,014,000	20,224,000
Deposits:
Noninterest-bearing deposits	2,203,806,000	2,203,806,000	1,790,269,000
Interest-bearing demand and savings deposits	3,390,225,000	3,390,225,000	3,106,931,000
Time deposits	802,904,000	802,904,000	899,562,000
Short-term debt			22,000,000
Long-term debt	90,309,000	90,309,000	92,488,000
Interest Payable	1,142,000	1,142,000	1,727,000
Estimated Fair Value | Interest rate lock commitments
Deposits:
Derivative liabilities	14,000	14,000	18,000
Estimated Fair Value | Commitments to extend credit
Deposits:
Off-balance sheet financial instruments	1,620,000	1,620,000	1,313,000
Estimated Fair Value | Standby letters of credit and financial guarantees written
Deposits:
Off-balance sheet financial instruments	172,000	172,000	158,000
Estimated Fair Value | Risk participation agreements
Deposits:
Assets, Fair Value Disclosure, Recurring (Deprecated 2018-01-31)	(22,000)	(22,000)	(48,000)
Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial assets
Cash and due from banks	116,009,000	116,009,000	97,546,000
Interest-bearing deposits in other banks	224,469,000	224,469,000	6,521,000
Investment securities	1,578,000	1,578,000	1,351,000
Loans held for sale	0	0	0
Net loans and leases	0	0	0
Accrued interest receivable	19,014,000	19,014,000	20,224,000
Deposits:
Noninterest-bearing deposits	2,203,806,000	2,203,806,000	1,790,269,000
Interest-bearing demand and savings deposits	3,390,225,000	3,390,225,000	3,106,931,000
Time deposits	0	0	0
Short-term debt			0
Long-term debt	0	0	0
Interest Payable	1,142,000	1,142,000	1,727,000
Quoted Prices in Active Markets for Identical Assets (Level 1) | Interest rate lock commitments
Deposits:
Derivative liabilities	0	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Commitments to extend credit
Deposits:
Off-balance sheet financial instruments	0	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Standby letters of credit and financial guarantees written
Deposits:
Off-balance sheet financial instruments	0	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Risk participation agreements
Deposits:
Assets, Fair Value Disclosure, Recurring (Deprecated 2018-01-31)	0	0	0
Significant Other Observable Inputs (Level 2)
Financial assets
Cash and due from banks	0	0	0
Interest-bearing deposits in other banks	0	0	0
Investment securities	1,398,430,000	1,398,430,000	1,170,283,000
Loans held for sale	5,361,000	5,361,000	16,687,000
Net loans and leases	0	0	0
Accrued interest receivable	0	0	0
Deposits:
Noninterest-bearing deposits	0	0	0
Interest-bearing demand and savings deposits	0	0	0
Time deposits	0	0	0
Short-term debt			22,000,000
Long-term debt	0	0	0
Interest Payable	0	0	0
Significant Other Observable Inputs (Level 2) | Interest rate lock commitments
Deposits:
Derivative liabilities	14,000	14,000	18,000
Significant Other Observable Inputs (Level 2) | Commitments to extend credit
Deposits:
Off-balance sheet financial instruments	1,620,000	1,620,000	1,313,000
Significant Other Observable Inputs (Level 2) | Standby letters of credit and financial guarantees written
Deposits:
Off-balance sheet financial instruments	172,000	172,000	158,000
Significant Other Observable Inputs (Level 2) | Risk participation agreements
Deposits:
Assets, Fair Value Disclosure, Recurring (Deprecated 2018-01-31)	0	0	0
Significant Unobservable Inputs (Level 3)
Financial assets
Cash and due from banks	0	0	0
Interest-bearing deposits in other banks	0	0	0
Investment securities	8,910,000	8,910,000	12,326,000
Loans held for sale	0	0	0
Net loans and leases	4,882,130,000	4,882,130,000	4,795,776,000
Accrued interest receivable	0	0	0
Deposits:
Noninterest-bearing deposits	0	0	0
Interest-bearing demand and savings deposits	0	0	0
Time deposits	802,904,000	802,904,000	899,562,000
Short-term debt			0
Long-term debt	90,309,000	90,309,000	92,488,000
Interest Payable	0	0	0
Significant Unobservable Inputs (Level 3) | Interest rate lock commitments
Deposits:
Derivative liabilities	0	0	0
Significant Unobservable Inputs (Level 3) | Commitments to extend credit
Deposits:
Off-balance sheet financial instruments	0	0	0
Significant Unobservable Inputs (Level 3) | Standby letters of credit and financial guarantees written
Deposits:
Off-balance sheet financial instruments	0	0	0
Significant Unobservable Inputs (Level 3) | Risk participation agreements
Deposits:
Assets, Fair Value Disclosure, Recurring (Deprecated 2018-01-31)	(22,000)	(22,000)	(48,000)
Recurring basis | Carrying Amount | Forward sale commitments
Deposits:
Assets, Fair Value Disclosure, Recurring (Deprecated 2018-01-31)	(14,000)	(14,000)	(115,000)
Recurring basis | Estimated Fair Value | Forward sale commitments
Deposits:
Assets, Fair Value Disclosure, Recurring (Deprecated 2018-01-31)	(14,000)	(14,000)	(115,000)
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Forward sale commitments
Deposits:
Assets, Fair Value Disclosure, Recurring (Deprecated 2018-01-31)	0	0	0
Recurring basis | Significant Other Observable Inputs (Level 2) | Forward sale commitments
Deposits:
Assets, Fair Value Disclosure, Recurring (Deprecated 2018-01-31)	(14,000)	(14,000)	(115,000)
Recurring basis | Significant Unobservable Inputs (Level 3) | Forward sale commitments
Deposits:
Assets, Fair Value Disclosure, Recurring (Deprecated 2018-01-31)	$ 0	$ 0	$ 0