LOANS - Risk Category of Loans by Class of Loans (Excluding Mortgage Loans Held for Sale) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 3,131,621	$ 2,601,979
Less: Unearned discount	7,943	1,621
Loans, net of unearned discount	3,123,678	2,600,358
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	2,969,942	2,513,135
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	68,064	13,584
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	91,939	75,167
Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,676	93
Commercial financial and agriculture
Financing Receivable, Recorded Investment [Line Items]
Loans	576,637	341,686
Less: Unearned discount	0	0
Loans, net of unearned discount	576,637	341,686
Commercial financial and agriculture \| Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	560,966	327,205
Commercial financial and agriculture \| Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	2,143	3,493
Commercial financial and agriculture \| Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	11,875	10,972
Commercial financial and agriculture \| Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,653	16
Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans	1,971,680	1,705,003
Less: Unearned discount	7,943	1,621
Loans, net of unearned discount	1,963,737	1,703,382
Commercial real estate \| Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,841,110	1,645,496
Commercial real estate \| Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	64,012	8,876
Commercial real estate \| Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	66,535	50,554
Commercial real estate \| Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	23	77
Consumer real estate
Financing Receivable, Recorded Investment [Line Items]
Loans	541,734	513,864
Less: Unearned discount	0	0
Loans, net of unearned discount	541,734	513,864
Consumer real estate \| Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	526,448	499,426
Consumer real estate \| Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,889	1,194
Consumer real estate \| Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	13,397	13,244
Consumer real estate \| Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Consumer installment
Financing Receivable, Recorded Investment [Line Items]
Loans	41,570	41,426
Less: Unearned discount	0	0
Loans, net of unearned discount	41,570	41,426
Consumer installment \| Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	41,418	41,008
Consumer installment \| Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	20	21
Consumer installment \| Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	132	397
Consumer installment \| Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 0	$ 0

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No definition available.

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- Definition

Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7)
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-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 4
-Subparagraph (a)(4)
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-SubTopic 10
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- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

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- Definition

Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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