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RECENT ACCOUNTING PRONOUNCEMENTS (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Jan. 01, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Financing receivable, allowance for credit loss	$ 59,645	$ (47,971)	$ 47,971
Net deferred tax assets (included in other assets)		16,541
Reserve for off-balance sheet credit exposures (included in other liabilities)	(3,810)	(1,272)	(1,272)	$ (1,409)	$ (1,242)
Accumulated deficit	$ 20,428	19,102	19,102
Commercial Financial And Agricultural Portfolio Segment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Financing receivable, allowance for credit loss		(8,136)
Real Estate \| Construction
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Financing receivable, allowance for credit loss		(1,792)
Real Estate \| Residential Mortgage
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Financing receivable, allowance for credit loss		(13,327)
Real Estate \| Home Equity
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Financing receivable, allowance for credit loss		(4,206)
Real Estate \| Commercial Mortgage
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Financing receivable, allowance for credit loss		(11,113)
Consumer
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Financing receivable, allowance for credit loss		(9,397)
Adjusted balance at beginning of period
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Financing receivable, allowance for credit loss		(51,537)
Net deferred tax assets (included in other assets)		17,692
Reserve for off-balance sheet credit exposures (included in other liabilities)		(2,012)	(2,012)
Accumulated deficit		22,257
Adjusted balance at beginning of period \| Commercial Financial And Agricultural Portfolio Segment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Financing receivable, allowance for credit loss		(7,509)
Adjusted balance at beginning of period \| Real Estate \| Construction
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Financing receivable, allowance for credit loss		(2,271)
Adjusted balance at beginning of period \| Real Estate \| Residential Mortgage
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Financing receivable, allowance for credit loss		(13,935)
Adjusted balance at beginning of period \| Real Estate \| Home Equity
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Financing receivable, allowance for credit loss		(2,592)
Adjusted balance at beginning of period \| Real Estate \| Commercial Mortgage
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Financing receivable, allowance for credit loss		(13,737)
Adjusted balance at beginning of period \| Consumer
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Financing receivable, allowance for credit loss		(11,493)
Impact of the adoption of new accounting standards
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Financing receivable, allowance for credit loss		(3,566)
Net deferred tax assets (included in other assets)		1,151
Reserve for off-balance sheet credit exposures (included in other liabilities)		(740)	(740)
Accumulated deficit		3,155	3,200
Impact of the adoption of new accounting standards \| Commercial Financial And Agricultural Portfolio Segment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Financing receivable, allowance for credit loss		627
Impact of the adoption of new accounting standards \| Real Estate \| Construction
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Financing receivable, allowance for credit loss		(479)
Impact of the adoption of new accounting standards \| Real Estate \| Residential Mortgage
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Financing receivable, allowance for credit loss		(608)
Impact of the adoption of new accounting standards \| Real Estate \| Home Equity
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Financing receivable, allowance for credit loss		1,614
Impact of the adoption of new accounting standards \| Real Estate \| Commercial Mortgage
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Financing receivable, allowance for credit loss		(2,624)
Impact of the adoption of new accounting standards \| Consumer
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Financing receivable, allowance for credit loss		$ (2,096)
Accounting Standards Update 2016-13 [Member] \| Impact of the adoption of new accounting standards
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Financing receivable, allowance for credit loss			3,600
Net deferred tax assets (included in other assets)			1,100
Reserve for off-balance sheet credit exposures (included in other liabilities)			$ (700)