STOCK BASED COMPENSATION PLANS - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted	47,393
Options outstanding	47,393	0
Nine months ratable vesting schedule
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted stock awards granted		3,455
Vesting period (in years)		9 months
Stock option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 91	$ 0	$ 0
Options outstanding		0	0
Unrecognized compensation cost related to unvested stock options	$ 218
Cost is expected to be recognized period	2 years 1 month 6 days
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted stock awards granted	324,882
Number of restricted stock awards granted	324,882	317,692
Restricted stock \| Time-vested RSAs vest
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted stock awards granted	301,250
Restricted stock \| Performance-based RSAs vest
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted stock awards granted	23,632
Vesting period (in years)	2 years
Number of restricted stock awards granted	25,117
Directors \| Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	1 year
Deferred compensation expense	$ 560	$ 530	$ 493
2012 Plan \| Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	2,400	$ 1,700	$ 1,500
Number of restricted stock awards granted		71,781	69,309
Total fair value of shares vested	1,500	$ 1,100	$ 935
Unrecognized compensation cost related to non-vested RSAs	$ 5,000
Cost is expected to be recognized period	3 years 3 months 18 days
2012 Plan \| Restricted stock \| Seven year specified vesting schedule
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted stock awards granted		31,860	36,000
Vesting period (in years)		7 years	7 years
Year in vesting schedule in which one-third of the awards vest, period one		5 years	5 years
Year in vesting schedule in which one-third of the awards vest, period two		6 years	6 years
Year in vesting schedule in which one-third of the awards vest, period three		7 years	7 years
2012 Plan \| Restricted stock \| Five year specified vesting schedule
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted stock awards granted	44,750	25,396	27,709
Vesting period (in years)	5 years	5 years	5 years
Year in vesting schedule in which one-third of the awards vest, period one		3 years	3 years
Year in vesting schedule in which one-third of the awards vest, period two		4 years	4 years
Year in vesting schedule in which one-third of the awards vest, period three		5 years	5 years
2012 Plan \| Restricted stock \| Three year ratable vesting
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted stock awards granted	13,915	11,070	5,600
Vesting period (in years)	3 years	3 years	3 years
LTI Plan \| Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 462	$ 309	$ 193
Number of restricted stock awards granted	21,693
Number of restricted stock awards granted	79,238	68,776
Unrecognized compensation cost related to non-vested RSAs	$ 1,300
Cost is expected to be recognized period	3 years
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	12,522
Vesting period (in years)	5 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	9,171
Vesting period (in years)	3 years
LTI Plan \| NEOs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted	47,393	0	0
Percentage premium over the grant date stock price	10.00%
Vesting period (in years)	3 years
Weighted-average grant-date fair value	$ 6.52
Method used	Black-Scholes option-pricing model
Dividend yield	2.80%
Expected volatility rate	27.53%
Risk-free interest rate	2.67%
Expected option life	6 years 6 months

Represents the percentage premium over the grant date stock price.

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The first period representing the year in the vesting schedule that one-third of the awards vest.

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The third period representing the year in the vesting schedule that one-third of the awards vest.

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The second period representing the year in the vesting schedule that one-third of the awards vest.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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The compensation expense recognized during the period pertaining to the deferred compensation arrangement.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

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Unrecognized cost of unvested options awarded to employees as compensation.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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For each plan, identification of the award pricing model or other valuation method used in calculating the weighted average fair values disclosed. The model is also used to calculate the compensation expense that is shown within the balance sheet, income statement, and cash flow. Examples of valuation techniques are lattice models (binomial model), closed-form models (Black-Scholes-Merton formula), and a Monte Carlo simulation technique. Fair value is the amount at which an asset or liability could be bought or incurred or sold or settled in a current transaction between willing parties, that is, other than in a forced or liquidation sale. May include disclosures about the assumptions underlying application of the method selected.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Gross number of share options (or share units) granted during the period.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Number of options outstanding, including both vested and non-vested options.

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Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards.

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