BASIC AND DILUTED EARNINGS PER SHARE (Tables)

12 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Schedule of Calculation of Numerator and Denominator in Earnings Per Share [Table Text Block]

	Year Ended December 31,
	2015		2016		2017
Numerator:
Net income	$	366	$	16,238	$	4,030
Denominator:
Denominator for basic earnings per share - weighted average number of ordinary shares, net of treasury stock		40,178,292		35,173,562		31,103,703
Effect of dilutive securities:
Employee stock options, warrants and RSUs		386,653		605,292		1,064,659
Denominator for diluted earnings per share - adjusted weighted average number of shares		40,564,945		35,778,854		32,168,362