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STOCK BASED COMPENSATION PLANS - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
May 31, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Granted |  |  |  | 69,360 |  |
Stock Option |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Compensation expense |  | $ 75 | $ 53 | $ 217 | $ 144 |
Unrecognized compensation cost related to unvested stock options |  | 409 |  | $ 409 |  |
Cost is expected to be recognized period |  |  |  | 1 year 9 months 18 days |  |
Restricted Stock Awards |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Compensation expense |  | 628 | 537 | $ 1,800 | 1,700 |
Unrecognized compensation cost related to non-vested RSAs |  | 5,400 |  | $ 5,400 |  |
Cost is expected to be recognized period |  |  |  | 3 years |  |
Directors | Restricted Stock Units |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Vesting period (in years) |  |  |  | 1 year |  |
Deferred compensation expense |  | $ 155 | 142 | $ 397 | $ 427 |
2012 Plan |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Granted | 0 |  |  |  |  |
2012 Plan | Restricted Stock Awards |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Number of restricted stock awards granted |  |  |  | 91,428 | 78,952 |
Number of restricted stock awards unvested |  | 272,274 |  | 272,274 |  | 293,717
2012 Plan | Restricted Stock Awards | Time-vested RSAs vest ratably over five years |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Number of restricted stock awards granted |  |  |  | 57,850 | 49,925 |
Vesting period (in years) |  |  |  | 5 years | 5 years |
2012 Plan | Restricted Stock Awards | Time-vested RSAs vest ratably over three years |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Number of restricted stock awards granted |  |  |  | 33,578 | 29,027 |
Vesting period (in years) |  |  |  | 3 years | 3 years |
2012 Plan | Performance based RSAs |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Number of restricted stock awards unvested |  | 0 |  | 0 |  |
LTI Plan | Restricted Stock Units |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Compensation expense |  | $ 224 | $ 175 | $ 642 | $ 518 |
Number of restricted stock awards granted |  |  |  | 26,556 |  |
Number of restricted stock awards unvested |  | 93,147 |  | 93,147 |  | 85,342
Unrecognized compensation cost related to non-vested RSAs |  | $ 1,500 |  | $ 1,500 |  |
Cost is expected to be recognized period |  |  |  | 2 years 3 months 18 days |  |
LTI Plan | Restricted Stock Units | Time-vested RSAs vest ratably over five years |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Number of restricted stock awards granted |  |  |  | 17,943 |  |
Vesting period (in years) |  |  |  | 3 years |  |
LTI Plan | Restricted Stock Units | Performance-based RSAs vest |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Number of restricted stock awards granted |  |  |  | 8,613 |  |
Vesting period (in years) |  |  |  | 3 years |  |
LTI Plan | NEOs |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Granted |  |  |  | 69,360 | 63,267 |
Percentage premium over the grant date stock price |  |  |  | 10.00% |  |
Vesting period (in years) |  |  |  | 3 years |  |
Weighted-average grant-date fair value |  |  |  | $ 4.10 | $ 5.05 |
Method used |  |  |  | Black-Scholes option-pricing model |  |

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