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EARNINGS PER SHARE - Calculation of Basic and Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share [Abstract]
Net income	$ 4,977	$ 6,901	$ 16,404	$ 12,690
Weighted average shares outstanding - basic (in shares)	10,941	10,949	10,939	10,159
Dilutive effect of share-based compensation (in shares)	84	145	88	159
Weighted average shares outstanding - diluted (in shares)	11,025	11,094	11,027	10,318
Per share information:
Basic earnings per share (in usd per share)	$ 0.45	$ 0.63	$ 1.50	$ 1.25
Diluted earnings per share (in usd per share)	$ 0.45	$ 0.62	$ 1.49	$ 1.23

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