LOANS AND LEASES (Allowance for Loan and Lease Losses) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Allowance for loan and lease losses :
Ending balance attributable to loans : Individually evaluated for impairment	$ 235	$ 0
Ending balance attributable to loans : Collectively evaluated for impairment	47,736	47,916
Total ending balance	47,971	47,916	$ 50,001	$ 56,631
Loans and leases :
Individually evaluated for impairment	9,066	15,191
Collectively evaluated for impairment	4,437,629	4,060,682
Loans and leases	4,446,695	4,075,873
Net deferred costs (income)	2,845	2,493
Total loans and leases	4,449,540	4,078,366
Commercial, financial and agricultural
Allowance for loan and lease losses :
Ending balance attributable to loans : Individually evaluated for impairment	218	0
Ending balance attributable to loans : Collectively evaluated for impairment	7,918	8,027
Total ending balance	8,136	8,027	7,594	8,637
Loans and leases :
Individually evaluated for impairment	602	220
Collectively evaluated for impairment	569,487	580,957
Loans and leases	570,089	581,177
Net deferred costs (income)	215	483
Total loans and leases	570,304	581,660
Real Estate \| Construction
Allowance for loan and lease losses :
Ending balance attributable to loans : Individually evaluated for impairment	0	0
Ending balance attributable to loans : Collectively evaluated for impairment	1,792	1,202
Total ending balance	1,792	1,202	1,835	4,224
Loans and leases :
Individually evaluated for impairment	0	2,273
Collectively evaluated for impairment	96,139	64,996
Loans and leases	96,139	67,269
Net deferred costs (income)	(285)	(342)
Total loans and leases	95,854	66,927
Real Estate \| Residential mortgage
Allowance for loan and lease losses :
Ending balance attributable to loans : Individually evaluated for impairment	0	0
Ending balance attributable to loans : Collectively evaluated for impairment	13,327	14,349
Total ending balance	13,327	14,349	14,328	15,055
Loans and leases :
Individually evaluated for impairment	6,516	10,075
Collectively evaluated for impairment	1,589,285	1,414,309
Loans and leases	1,595,801	1,424,384
Net deferred costs (income)	4,000	3,821
Total loans and leases	1,599,801	1,428,205
Real Estate \| Home equity
Allowance for loan and lease losses :
Ending balance attributable to loans : Individually evaluated for impairment	0	0
Ending balance attributable to loans : Collectively evaluated for impairment	4,206	3,788
Total ending balance	4,206	3,788	3,317	3,502
Loans and leases :
Individually evaluated for impairment	92	275
Collectively evaluated for impairment	490,147	468,691
Loans and leases	490,239	468,966
Net deferred costs (income)	495	0
Total loans and leases	490,734	468,966
Real Estate \| Commercial mortgage
Allowance for loan and lease losses :
Ending balance attributable to loans : Individually evaluated for impairment	0	0
Ending balance attributable to loans : Collectively evaluated for impairment	11,113	13,358
Total ending balance	11,113	13,358	16,801	19,104
Loans and leases :
Individually evaluated for impairment	1,839	2,348
Collectively evaluated for impairment	1,123,072	1,039,337
Loans and leases	1,124,911	1,041,685
Net deferred costs (income)	(1,496)	(1,407)
Total loans and leases	1,123,415	1,040,278
Consumer
Loans and leases :
Loans and leases	112,200
Consumer \| Other
Allowance for loan and lease losses :
Ending balance attributable to loans : Individually evaluated for impairment	17	0
Ending balance attributable to loans : Collectively evaluated for impairment	9,380	7,192
Total ending balance	9,397	7,192	6,126	6,109
Loans and leases :
Individually evaluated for impairment	17	0
Collectively evaluated for impairment	569,499	492,268
Loans and leases	569,516	492,268
Net deferred costs (income)	(84)	(62)
Total loans and leases	569,432	492,206
Leases
Allowance for loan and lease losses :
Ending balance attributable to loans : Individually evaluated for impairment	0	0
Ending balance attributable to loans : Collectively evaluated for impairment	0	0
Total ending balance	0	0	$ 0	$ 0
Loans and leases :
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	0	124
Loans and leases	0	124
Net deferred costs (income)	0	0
Total loans and leases	$ 0	$ 124

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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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.

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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.

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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.

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