EARNINGS PER SHARE (Details) - $ / shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Shares
Basic (in shares)	17,527	17,259	17,502	17,235
Effect of dilutive stock options (in shares)	681	320	612	325
Diluted (in shares)	18,208	17,579	18,114	17,560
Per Share Amount
Basic (in dollars per share)	$ 0.41	$ 0.33	$ 0.69	$ 0.60
Effect of dilutive stock options (in dollars per share)	(0.01)	(0.01)	(0.02)	(0.02)
Diluted (in dollars per share)	$ 0.40	$ 0.32	$ 0.67	$ 0.58
Stock options
Anti-dilutive securities
Anti-dilutive securities excluded from the computation of diluted earnings per share (in shares)	167	942	494	981