REVENUE FROM CONTRACTS WITH CUSTOMERS - Revenue By Operating Segment (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Net gains (losses) on sales of OREO	$ (29)	$ (83)
Net gains on sales of loans held for sale	75	48
Change in fair value of equity investments	(246)	89
Total non-interest income	4,730	4,925
Overdraft fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	805	888
Other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	185	216
Interchange revenue from debit card transactions
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	925	1,031
WMG fee income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	2,229	2,276
CFS fee and commission income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	177	168
Net gains (losses) on sales of OREO
Disaggregation of Revenue [Line Items]
Net gains (losses) on sales of OREO	(29)	(83)
Net gains on sales of loans
Disaggregation of Revenue [Line Items]
Net gains on sales of loans held for sale	75	48
Loan servicing fees
Disaggregation of Revenue [Line Items]
Loan servicing fees	27	35
Sale of securities
Disaggregation of Revenue [Line Items]
Net gains on sales of securities	0	0
Other
Disaggregation of Revenue [Line Items]
Other	582	257
Core Banking
Disaggregation of Revenue [Line Items]
Change in fair value of equity investments	(167)	73
Total non-interest income	2,364	2,465
Core Banking \| Overdraft fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	805	888
Core Banking \| Other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	185	216
Core Banking \| Interchange revenue from debit card transactions
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	925	1,031
Core Banking \| WMG fee income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0
Core Banking \| CFS fee and commission income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0
Core Banking \| Net gains (losses) on sales of OREO
Disaggregation of Revenue [Line Items]
Net gains (losses) on sales of OREO	(29)	(83)
Core Banking \| Net gains on sales of loans
Disaggregation of Revenue [Line Items]
Net gains on sales of loans held for sale	75	48
Core Banking \| Loan servicing fees
Disaggregation of Revenue [Line Items]
Loan servicing fees	27	35
Core Banking \| Sale of securities
Disaggregation of Revenue [Line Items]
Net gains on sales of securities	0	0
Core Banking \| Other
Disaggregation of Revenue [Line Items]
Other	543	257
WMG
Disaggregation of Revenue [Line Items]
Change in fair value of equity investments	0	0
Total non-interest income	2,229	2,276
WMG \| Overdraft fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0
WMG \| Other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0
WMG \| Interchange revenue from debit card transactions
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0
WMG \| WMG fee income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	2,229	2,276
WMG \| CFS fee and commission income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0
WMG \| Net gains (losses) on sales of OREO
Disaggregation of Revenue [Line Items]
Net gains (losses) on sales of OREO	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
WMG \| Loan servicing fees
Disaggregation of Revenue [Line Items]
Loan servicing fees	0	0
WMG \| Sale of securities
Disaggregation of Revenue [Line Items]
Net gains on sales of securities	0	0
WMG \| Other
Disaggregation of Revenue [Line Items]
Other	0	0
Holding Company, CFS, and CRM
Disaggregation of Revenue [Line Items]
Change in fair value of equity investments	(79)	16
Total non-interest income	137	184
Holding Company, CFS, and CRM \| Overdraft fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	0	0
Holding Company, CFS, and CRM \| Other
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	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
Holding Company, CFS, and CRM \| WMG fee income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	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	177	168
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
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
Holding Company, CFS, and CRM \| Loan servicing fees
Disaggregation of Revenue [Line Items]
Loan servicing fees	0	0
Holding Company, CFS, and CRM \| Sale of securities
Disaggregation of Revenue [Line Items]
Net gains on sales of securities	0	0
Holding Company, CFS, and CRM \| Other
Disaggregation of Revenue [Line Items]
Other	$ 39	$ 0

Amount of unrealized and realized gain (loss) on investment in debt and equity securities.

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Amount of unrealized and realized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Income from mortgage banking activities (fees and commissions) and servicing real estate mortgages, credit cards, and other financial assets held by others net of any related impairment of capitalized service costs. Also includes any premiums received in lieu of regular servicing fees on such loans only as earned over the life of the loans.

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The net gain (loss) resulting from a sale of loans, including adjustments to record loans classified as held-for-sale at the lower-of-cost-or-market and fair value adjustments to loan held for investment purposes.

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