SHARE-BASED COMPENSATION (Details 2) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Balance, beginning of year (in shares) | shares	1,932,880
Granted (in shares) | shares	1,082,724
Exercise of options (in shares) | shares	(22,132)
Canceled (in shares) | shares	(172,642)
Expired (in shares) | shares	(7,488)
Balance, end of year (in shares) | shares	2,813,342
Options exercisable, end of year (in shares) | shares	1,402,702
Vested and unvested expected to vest options outstanding (in shares) | shares	2,813,342
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Balance, beginning of year (in dollars per share) | $ / shares	$ 16.71
Granted (in dollars per share) | $ / shares	16.90
Exercised (in dollars per share) | $ / shares	10.85
Canceled (in dollars per share) | $ / shares	20.61
Expired (in dollars per share) | $ / shares	23.28
Balance, end of year (in dollars per share) | $ / shares	16.57
Options exercisable, end of year (in dollars per share) | $ / shares	15.42
Vested and unvested expected to vest options outstanding, Weighted-Average Exercise Price (in dollars per share) | $ / shares	$ 16.57
Options outstanding, Weighted-Average Remaining Contractual Term (years)	7 years
Options exercisable, Weighted-Average Remaining Contractual Term (years)	5 years 3 months
Options vested and expected to vest, Weighted-Average Remaining Contractual Term (years)	7 years
Options outstanding, Aggregate Intrinsic Value | $	$ 21,950
Options exercisable, Aggregate Intrinsic Value | $	0
Options vested and expected to vest, Aggregate Intrinsic Value | $	$ 21,950