EARNINGS PER SHARE - Computation of earnings per share (Details) - Calculation of earnings per share - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Net income	$ 1,735	$ 2,072	$ 3,247	$ 4,306
Less: Preferred stock dividends declared		(40)		(80)
Net income available to common shareholders	1,735	2,032	3,247	4,226
Less: Undistributed earnings allocated to participating securities	(13)	(18)	(27)	(37)
Net income allocated to common stock	1,722	2,014	3,220	4,189
Weighted-average common shares issued	2,756	2,730	2,751	2,727
Less: Unvested restricted stock awards	(21)	(24)	(22)	(24)
Weighted average common shares outstanding used to calculate basic earnings per common share	2,735	2,706	2,729	2,703
Add: Dilutive effect of stock options	15	18	16	17
Weighted-average common shares outstanding used to calculate diluted earnings per common share	$ 2,750	$ 2,724	$ 2,745	$ 2,720
Earnings per common share (basic)	$ .63	$ .74	$ 1.18	$ 1.55
Earnings per common share (diluted)	$ .63	$ .74	$ 1.17	$ 1.54

Amount of increase (decrease) to net income used for calculating diluted earnings per share (EPS), resulting from the assumed exercise of stock options or restrictive stock units (RSUs).

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Amount of increase (decrease) to net income used for calculating diluted earnings per share (EPS), resulting from the assumed exercise stock options, restrictive stock units (RSUs), convertible preferred stock of an employee stock ownership plan (ESOP), and other dilutive convertible securities.

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Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent, and includes adjustments resulting from the assumption that dilutive convertible securities were converted, options or warrants were exercised, or that other shares were issued upon the satisfaction of certain conditions.

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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Value of preferred stock and warrants for common stock issued.

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Aggregate value of stock related to Restricted Stock Awards issued during the period.

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The earnings that is allocated to common stock and participating securities to the extent that each security may share in earnings as if all of the earnings for the period had been distributed. Includes the adjustments resulting from the assumption that dilutive securities were converted, options or warrants were exercised, or that other shares were issued upon the satisfaction of certain conditions.

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Amount of undistributed earnings (loss) allocated to participating securities for the basic earnings (loss) per share or per unit calculation under the two-class method.

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