EARNINGS PER SHARE - Schedule of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Numerator:
Net earnings (basic)	$ 5,337	$ 4,359
Net earnings (diluted)	$ 5,337	$ 4,359
Denominator:
Weighted-average shares outstanding (basic) (in shares)	11,815,966	11,058,956
Effect of dilutive securities:
Common stock equivalent shares from stock options (in shares)	43,492	118,623
Weighted-average shares outstanding (diluted) (in shares)	11,859,458	11,177,579
Net earnings per share
Basic (in USD per share)	$ 0.45	$ 0.39
Diluted (in USD per share)	$ 0.45	$ 0.39

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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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.

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