STOCK BASED COMPENSATION (Exercise price range) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options outstanding, number	935
Stock options outstanding, weighted average remaining contractual term (in years)	7 years 3 months 29 days
Stock options outstanding, weighted average exercise price	$ 4.91
Options exercisable, vested and exercisable	647
Options exercisable, weighted average exercise price	$ 5.28
$1.30
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options outstanding, number	16
Stock options outstanding, weighted average remaining contractual term (in years)	10 months 24 days
Stock options outstanding, weighted average exercise price	$ 1.30
Options exercisable, vested and exercisable	16
Options exercisable, weighted average exercise price	$ 1.30
Exercise price, maximum	$ 1.30
$1.31 - $3.99
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options outstanding, number	181
Stock options outstanding, weighted average remaining contractual term (in years)	7 years 2 months 12 days
Stock options outstanding, weighted average exercise price	$ 3.91
Options exercisable, vested and exercisable	54
Options exercisable, weighted average exercise price	$ 3.93
Exercise price, maximum	$ 3.99
Exercise price, minimum	$ 1.31
$4.00 - $4.30
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options outstanding, number	383
Stock options outstanding, weighted average remaining contractual term (in years)	7 years 9 months 18 days
Stock options outstanding, weighted average exercise price	$ 4.13
Options exercisable, vested and exercisable	245
Options exercisable, weighted average exercise price	$ 4.10
Exercise price, maximum	$ 4.30
Exercise price, minimum	$ 4.00
$4.31 - $4.99
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options outstanding, number	40
Stock options outstanding, weighted average remaining contractual term (in years)	8 years 6 months
Stock options outstanding, weighted average exercise price	$ 4.51
Options exercisable, vested and exercisable	17
Options exercisable, weighted average exercise price	$ 4.61
Exercise price, maximum	$ 4.99
Exercise price, minimum	$ 4.31
$5.00 - $7.62
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options outstanding, number	315
Stock options outstanding, weighted average remaining contractual term (in years)	7 years 0 months 4 days
Stock options outstanding, weighted average exercise price	$ 6.67
Options exercisable, vested and exercisable	315
Options exercisable, weighted average exercise price	$ 6.67
Exercise price, maximum	$ 7.62
Exercise price, minimum	$ 5.00