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REVENUE FROM CONTRACTS WITH CUSTOMERS - Revenue By Operating Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Disaggregation of Revenue [Line Items] |  |  |  |
Change in fair value of equity securities | $ 2,141 | $ 32 | $ 2,165 | $ 96
Gains (losses) on sales of other real estate | 123 | 30 | 119 | 38
Financial services revenue | 79 | 71 | 184 | 193
Total non-interest income | 7,381 | 5,166 | 18,181 | 15,035
Overdraft fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer, including assessed tax | 1,035 | 1,142 | 2,939 | 3,092
Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer, including assessed tax | 196 | 127 | 600 | 586
Interchange revenue from debit card transactions |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer, including assessed tax | 982 | 925 | 3,013 | 2,809
WMG fee income |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer, including assessed tax | 2,406 | 2,147 | 7,095 | 6,525
CFS fee and commission income |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer, including assessed tax | 120 | 139 | 365 | 452
Net gains (losses) on sales of OREO |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Gains (losses) on sales of other real estate | 123 | 30 | 119 | 38
Net gains on sales of loans |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Financial services revenue | 79 | 71 | 184 | 193
Loan servicing fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Financial services revenue | 22 | 21 | 67 | 62
Net gains (losses) on security transactions |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer, including assessed tax | 0 | 0 | 0 | 12
Financial services revenue |  | 0 |  | 12
Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Financial services revenue | 277 | 532 | 1,634 | 1,170
Core Banking |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Change in fair value of equity securities | 2,140 | 32 | 2,148 | 96
Total non-interest income | 4,987 | 2,989 | 10,992 | 8,228
Core Banking | Overdraft fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer, including assessed tax | 1,035 | 1,142 | 2,939 | 3,092
Core Banking | Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer, including assessed tax | 196 | 127 | 600 | 586
Core Banking | Interchange revenue from debit card transactions |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer, including assessed tax | 982 | 925 | 3,013 | 2,809
Core Banking | WMG fee income |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer, including assessed tax | 0 | 0 | 0 | 0
Core Banking | CFS fee and commission income |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer, including assessed tax | 0 | 0 | 0 | 0
Core Banking | Net gains (losses) on sales of OREO |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Gains (losses) on sales of other real estate | 123 | 30 | 119 | 38
Core Banking | Net gains on sales of loans |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Financial services revenue | 79 | 71 | 184 | 193
Core Banking | Loan servicing fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Financial services revenue | 22 | 21 | 67 | 62
Core Banking | Net gains (losses) on security transactions |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Financial services revenue |  | 0 |  | 12
Core Banking | Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Financial services revenue | 410 | 641 | 1,922 | 1,340
WMG |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Change in fair value of equity securities | 0 | 0 | 0 | 0
Total non-interest income | 2,406 | 2,147 | 7,095 | 6,525
WMG | Overdraft fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer, including assessed tax | 0 | 0 | 0 | 0
WMG | Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer, including assessed tax | 0 | 0 | 0 | 0
WMG | Interchange revenue from debit card transactions |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer, including assessed tax | 0 | 0 | 0 | 0
WMG | WMG fee income |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer, including assessed tax | 2,406 | 2,147 | 7,095 | 6,525
WMG | CFS fee and commission income |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer, including assessed tax | 0 | 0 | 0 | 0
WMG | Net gains (losses) on sales of OREO |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Gains (losses) on sales of other real estate | 0 | 0 | 0 | 0
WMG | Net gains on sales of loans |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Financial services revenue | 0 | 0 | 0 | 0
WMG | Loan servicing fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Financial services revenue | 0 | 0 | 0 | 0
WMG | Net gains (losses) on security transactions |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Financial services revenue |  | 0 |  | 0
WMG | Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Financial services revenue | 0 | 0 | 0 | 0
Holding Company, CFS, and CRM |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Change in fair value of equity securities | 1 | 0 | 17 | 0
Total non-interest income | (12) | 30 | 94 | 282
Holding Company, CFS, and CRM | Overdraft fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer, including assessed tax | 0 | 0 | 0 | 0
Holding Company, CFS, and CRM | Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer, including 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, including assessed tax | 0 | 0 | 0 | 0
Holding Company, CFS, and CRM | WMG fee income |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer, including 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, including assessed tax | 120 | 139 | 365 | 452
Holding Company, CFS, and CRM | Net gains (losses) on sales of OREO |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Gains (losses) on sales of other real estate | 0 | 0 | 0 | 0
Holding Company, CFS, and CRM | Net gains on sales of loans |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Financial services revenue | 0 | 0 | 0 | 0
Holding Company, CFS, and CRM | Loan servicing fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Financial services revenue | 0 | 0 | 0 | 0
Holding Company, CFS, and CRM | Net gains (losses) on security transactions |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Financial services revenue |  | 0 |  | 0
Holding Company, CFS, and CRM | Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Financial services revenue | $ (133) | $ (109) | $ (288) | $ (170)

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