STOCK-BASED COMPENSATION Stock options activity (Details) - Stock options - $ / shares	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options outstanding, Number of Options, At the Beginning of the Year (shares)	756,800	800,350
Expired, number of options (shares)	(133,300)	(43,550)
Options outstanding, Number of Options, At the End of the Period (shares)	623,500	756,800
Options exercisable, Number of Options, At the End of the Period (shares)	623,500	756,800
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Options outstanding, weighted average exercise price per share, At the Beginning of the Year (usd per share)	$ 8.78	$ 9.15
Expired, weighted average exercise price per share (usd per share)	13.78	15.50
Options outstanding, weighted average exercise price per share, At the End of the Period (usd per share)	7.72	8.78
Options exercisable, weighted average exercise price per share, At the End of the Period (usd per share)	$ 7.72	$ 8.78