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STOCK BASED COMPENSATION (Details 4) - Performance share incentives [Member] - USD ($)
shares in Thousands, $ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Stock based compensation      
Outstanding at beginning of period (in shares) 51,809 105,875 105,875
Awarded (in shares) 47,350 0 0
Canceled or forfeited (in shares) (54,574) (54,066) 0
Outstanding at end of period (in shares) 44,585 51,809 105,875
Unamortized deferred compensation cost $ 0.4 $ 0.6 $ 1.2
Expected weighted-average recognition period for unrecognized compensation cost (in years) 2 years 3 months 22 days 11 months 19 days 1 year 1 month 28 days