STOCK-BASED COMPENSATION (Details) (Employee Stock Option [Member], USD $)	3 Months Ended
	Mar. 31, 2015
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, Outstanding at beginning of year	2,209,000
Options, Granted	0
Options, Exercised	(40,000)
Options, Expired	(333,000)
Options, Forfeited	(11,000)
Options, Outstanding at end of period	1,825,000
Options, Exercisable at end of period	1,365,000
Weighted-Average Exercise Price, Outstanding at beginning of year (in dollars per share)	$ 6.84
Weighted-Average Exercise Price, Granted (in dollars per share)	$ 0
Weighted-Average Exercise Price, Exercised (in dollars per share)	$ 3.87
Weighted-Average Exercise Price, Expired (in dollars per share)	$ 11.34
Weighted-Average Exercise Price, Forfeited (in dollars per share)	$ 5.60
Weighted-Average Exercise Price, Outstanding at end of period (in dollars per share)	$ 6.09
Weighted-Average Exercise Price, Exercisable at end of period (in dollars per share)	$ 6.3
Weighted-Average Remaining Contractual Term, Outstanding at end of period (in years)	6 years
Weighted-Average Remaining Contractual Term, Exercisable at end of period (in years)	5 years
Aggregate Intrinsic Value, Outstanding at end of period (in dollars)	$ 2,804,000
Aggregate Intrinsic Value, Exercisable at end of period (in dollars)	$ 2,377,000