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EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings Per Share [Abstract]
Net income	$ 8,617	$ 3,632	$ 19,386	$ 12,349
Average number of basic common shares outstanding (in shares)	15,420,499	9,063,576	15,098,377	9,036,548
Plus: dilutive effect of stock options and awards outstanding (in shares)	90,026	98,112	105,661	101,009
Average number of diluted common shares outstanding (in shares)	15,510,525	9,161,688	15,204,038	9,137,557
Anti-dilutive options excluded from earnings calculation (in shares)	0	101,826	8,247	107,535
Earnings per share:
Basic (in dollars per share)	$ 0.56	$ 0.40	$ 1.27	$ 1.37
Diluted (in dollars per share)	$ 0.56	$ 0.40	$ 1.27	$ 1.35

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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