SHAREHOLDERS' EQUITY (Details 3) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Shares under Option
Balance at the beginning of the period (in shares)	152,576	243,950	277,565
Granted (in shares)	180,833	39,204	47,867
Exercised (in shares)	(14,652)	(109,468)	(64,316)
Canceled (in shares)	(39,001)	(21,110)	(17,166)
Balance at the end of the period (in shares)	279,756	152,576	243,950
Weighted Average exercise price
Balance at the beginning of the period (in dollars per share)	$ 15.93	$ 12.48	$ 11.91
Granted (in dollars per share)	$ 11.79	$ 22.83	$ 20.58
Exercised (in dollars per share)	$ 10.56	$ 8.91	$ 12.60
Canceled (in dollars per share)	$ 10.86	$ 19.83	$ 26.82
Balance at the end of the period (in dollars per share)	$ 14.25	$ 15.93	$ 12.48