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REVENUE FROM CONTRACTS WITH CUSTOMERS - Revenue By Operating Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Net gains (losses) on sales of OREO	$ (48)	$ (3)	$ (77)	$ (86)
Net gains on sales of loans held for sale	288	29	363	77
Net gains on security transactions	0	19	0	19
Changes in fair value of equity investments	156	27	(90)	116
Income from bank owned life insurance	14	16	133	31
Other	801	365	1,468	810
Total non-interest income	5,080	5,086	9,810	10,011
Overdraft fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	421	856	1,226	1,744
Other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	143	229	328	445
Interchange revenue from debit card transactions
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	982	1,024	1,907	2,055
WMG fee income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	2,323	2,524	4,552	4,800
CFS fee and commission income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	153	189	330	357
Net gains (losses) on sales of OREO
Disaggregation of Revenue [Line Items]
Net gains (losses) on sales of OREO	(48)	(3)	(77)	(86)
Net gains on sales of loans
Disaggregation of Revenue [Line Items]
Net gains on sales of loans held for sale	288	29	363	77
Loan servicing fees
Disaggregation of Revenue [Line Items]
Loan servicing fees	29	16	56	51
Sale of securities
Disaggregation of Revenue [Line Items]
Net gains on security transactions		19		19
Income from bank-owned life insurance
Disaggregation of Revenue [Line Items]
Income from bank owned life insurance	14	16	133	31
Other
Disaggregation of Revenue [Line Items]
Other	619	160	1,082	402
Core Banking
Disaggregation of Revenue [Line Items]
Changes in fair value of equity investments	145	27	(22)	100
Total non-interest income	2,612	2,515	4,976	4,980
Core Banking \| Overdraft fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	421	856	1,226	1,744
Core Banking \| Other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	143	229	328	445
Core Banking \| Interchange revenue from debit card transactions
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	982	1,024	1,907	2,055
Core Banking \| WMG fee income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0	0	0
Core Banking \| CFS fee and commission income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0	0	0
Core Banking \| Net gains (losses) on sales of OREO
Disaggregation of Revenue [Line Items]
Net gains (losses) on sales of OREO	(48)	(3)	(77)	(86)
Core Banking \| Net gains on sales of loans
Disaggregation of Revenue [Line Items]
Net gains on sales of loans held for sale	288	29	363	77
Core Banking \| Loan servicing fees
Disaggregation of Revenue [Line Items]
Loan servicing fees	29	16	56	51
Core Banking \| Sale of securities
Disaggregation of Revenue [Line Items]
Net gains on security transactions		19		19
Core Banking \| Income from bank-owned life insurance
Disaggregation of Revenue [Line Items]
Income from bank owned life insurance	14	16	133	31
Core Banking \| Other
Disaggregation of Revenue [Line Items]
Other	638	302	1,062	544
WMG
Disaggregation of Revenue [Line Items]
Changes in fair value of equity investments	0	0	0	0
Total non-interest income	2,323	2,524	4,552	4,800
WMG \| Overdraft fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0	0	0
WMG \| Other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0	0	0
WMG \| Interchange revenue from debit card transactions
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0	0	0
WMG \| WMG fee income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	2,323	2,524	4,552	4,800
WMG \| CFS fee and commission income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0	0	0
WMG \| Net gains (losses) on sales of OREO
Disaggregation of Revenue [Line Items]
Net gains (losses) on sales of OREO	0	0	0	0
WMG \| Net gains on sales of loans
Disaggregation of Revenue [Line Items]
Net gains on sales of loans held for sale	0	0	0	0
WMG \| Loan servicing fees
Disaggregation of Revenue [Line Items]
Loan servicing fees	0	0	0	0
WMG \| Sale of securities
Disaggregation of Revenue [Line Items]
Net gains on security transactions		0		0
WMG \| Income from bank-owned life insurance
Disaggregation of Revenue [Line Items]
Income from bank owned life insurance	0	0	0	0
WMG \| Other
Disaggregation of Revenue [Line Items]
Other	0	0	0	0
Holding Company, CFS, and CRM
Disaggregation of Revenue [Line Items]
Changes in fair value of equity investments	11	0	(68)	16
Total non-interest income	145	47	282	231
Holding Company, CFS, and CRM \| Overdraft fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0	0	0
Holding Company, CFS, and CRM \| Other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0	0	0
Holding Company, CFS, and CRM \| Interchange revenue from debit card transactions
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0		0
Holding Company, CFS, and CRM \| WMG fee income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0	0	0
Holding Company, CFS, and CRM \| CFS fee and commission income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	153	189	330	357
Holding Company, CFS, and CRM \| Net gains (losses) on sales of OREO
Disaggregation of Revenue [Line Items]
Net gains (losses) on sales of OREO	0	0	0	0
Holding Company, CFS, and CRM \| Net gains on sales of loans
Disaggregation of Revenue [Line Items]
Net gains on sales of loans held for sale	0	0	0	0
Holding Company, CFS, and CRM \| Loan servicing fees
Disaggregation of Revenue [Line Items]
Loan servicing fees	0	0	0	0
Holding Company, CFS, and CRM \| Sale of securities
Disaggregation of Revenue [Line Items]
Net gains on security transactions		0		0
Holding Company, CFS, and CRM \| Income from bank-owned life insurance
Disaggregation of Revenue [Line Items]
Income from bank owned life insurance	0	0	0	0
Holding Company, CFS, and CRM \| Other
Disaggregation of Revenue [Line Items]
Other	$ (19)	$ (142)	$ 20	$ (142)