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NET INCOME PER COMMON SHARE (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Numerator:    
Net income $ 1,949 $ 1,314
Denominator [Abstract]    
Weighted average common shares outstanding – Basic 46,774,360 45,785,725
Effect of dilutive shares:    
Common stock equivalents arising from stock options and ESPP 9,442 163,779
Restricted stock awards and units and performance units 123,756 264,743
Weighted average common shares outstanding – Diluted 46,907,558 46,214,247
Basic (in dollars per share) $ 0.04 $ 0.03
Diluted (in dollars per share) $ 0.04 $ 0.03
Antidilutive securities excluded from calculation of diluted EPS 710 37,132