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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cost to be recognized for option under share-based payment arrangement.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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STOCK BASED COMPENSATION PLANS - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	May 31, 2019	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted				63,267
Stock option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense		$ 52	$ 26	$ 91	$ 39
Unrecognized compensation cost related to unvested stock options		447		$ 447
Cost is expected to be recognized period				2 years 3 months 18 days
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense		527	717	$ 1,100	$ 1,300
Unrecognized compensation cost related to non-vested RSAs		$ 5,900		$ 5,900
Cost is expected to be recognized period				3 years 3 months 18 days
Restricted stock \| Time-vested RSAs vest
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted stock awards unvested		290,717		290,717
Restricted stock \| Performance-based RSAs vest
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted stock awards granted					25,117
Vesting period (in years)					2 years
Number of restricted stock awards unvested		11,248		11,248
Directors \| Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)				1 year
Deferred compensation expense		$ 142	140	$ 285	$ 275
2012 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted	0
2012 Plan \| Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted stock awards granted				77,952	82,982
Number of restricted stock awards unvested		301,965		301,965		324,882
2012 Plan \| Restricted stock \| 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				49,925	44,750
Vesting period (in years)				5 years	5 years
2012 Plan \| Restricted stock \| 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				28,027	13,115
Vesting period (in years)				3 years	3 years
LTI Plan \| Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense		$ 173	$ 119	$ 343	$ 220
Number of restricted stock awards granted				22,305
Number of restricted stock awards unvested		84,055		84,055		79,238
Unrecognized compensation cost related to non-vested RSAs		$ 1,700		$ 1,700
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				13,255
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				9,050
Vesting period (in years)				3 years
LTI Plan \| NEOs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted				63,267	47,393
Percentage premium over the grant date stock price				10.00%
Vesting period (in years)				3 years
Weighted-average grant-date fair value				$ 5.05	$ 6.52
Method used				Black-Scholes option-pricing model