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EARNINGS PER SHARE - Schedule of Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Earnings Per Share [Abstract]
Net income	$ 12,805	$ 8,090	$ 6,628
Weighted average shares outstanding - basic (in shares)	8,360	8,070	8,059
Dilutive effect of share-based compensation (in shares)	177	156	86
Weighted average shares outstanding - diluted (in shares)	8,537	8,226	8,145
Per share information:
Basic earnings per share (in dollars per share)	$ 1.53	$ 1.00	$ 0.82
Diluted earnings per share (in dollars per share)	$ 1.50	$ 0.98	$ 0.81

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