LOANS HELD FOR INVESTMENT AND ALLOWANCE FOR CREDIT LOSSES (Portfolio Composition) (Details) - USD ($)		Mar. 31, 2020	Dec. 31, 2019
Loan Portfolio Composition
Loans Held for Investment, Net		$ 1,862,387,000	$ 1,835,929,000
Net deferred fees		1,800,000	1,800,000
Commercial, Financial and Agricultural [Member]
Loan Portfolio Composition
Loans Held for Investment, Net		249,020,000	255,365,000
Real Estate - Construction [Member]
Loan Portfolio Composition
Loans Held for Investment, Net		122,595,000	115,018,000
Real Estate - Commercial Mortgage [Member]
Loan Portfolio Composition
Loans Held for Investment, Net		656,084,000	625,556,000
Real Estate - Residential [Member]
Loan Portfolio Composition
Loans Held for Investment, Net	[1]	360,730,000	361,450,000
Loans in Process with outstanding balances		7,300,000	8,300,000
Real Estate - Home Equity [Member]
Loan Portfolio Composition
Loans Held for Investment, Net		196,443,000	197,360,000
Consumer [Member]
Loan Portfolio Composition
Loans Held for Investment, Net		277,515,000	281,180,000
Overdraft Balances		$ 1,500,000	$ 1,600,000

[1] Includes loans in process with outstanding balances of $ 7.3 million and $ 8.3 million at March 31, 2020 and December 31, 2019 , respective ly. ^{( 2 )} Includes overdraft balances of $ 1.5 million and $1.6 million at March 31, 2020 and December 31, 2019 , respectively.