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EARNINGS PER SHARE - Calculation of Basic and Diluted Earnings per Share (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Earnings Per Share [Abstract]
Net income	$ 3,102	$ 3,625
Weighted average shares outstanding - basic (in shares)	9,160	8,082
Dilutive effect of share-based compensation (in shares)	166	186
Weighted average shares outstanding - diluted (in shares)	9,326	8,268
Per share information:
Basic earnings per share (in usd per share)	$ 0.34	$ 0.45
Diluted earnings per share (in usd per share)	$ 0.33	$ 0.44

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