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EARNINGS PER SHARE - (Details) - $ / shares shares in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Shares
Basic (in shares)	17,937	17,770
Effect of dilutive stock options (in shares)	682	940
Diluted (in shares)	18,619	18,710
Per Share Amount
Basic (in dollars per share)	$ 0.39	$ 0.38
Effect of dilutive stock options (in dollars per share)	(0.01)	(0.02)
Diluted (in dollars per share)	$ 0.38	$ 0.36

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The effect of dilutive stock options per share amount.

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