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SHARE-BASED COMPENSATION (Summary of Restricted Stock Units and Performance Share Units) (Details)
12 Months Ended
Dec. 31, 2017
$ / shares
shares
Performance Share Units [Member]  
Quantity  
Nonvested at period (in shares) | shares 37,000
Forfeited during period (in shares) | shares (13,000)
Nonvested at period (in shares) | shares 24,000
Weighted-Average Grant Date Fair Value Per Share  
Weighted Average Fair Value, Nonvested at period (USD per share) | $ / shares $ 12.04
Weighted Average Fair Value, Forfeited during period (USD per share) | $ / shares 6.19
Weighted Average Fair Value, Nonvested at period (USD per share) | $ / shares $ 11.30
Restricted Stock Units [Member]  
Quantity  
Nonvested at period (in shares) | shares 31,499
Vested during period (in shares) | shares (10,876)
Forfeited during period (in shares) | shares (8,686)
Nonvested at period (in shares) | shares 11,937
Weighted-Average Grant Date Fair Value Per Share  
Weighted Average Fair Value, Nonvested at period (USD per share) | $ / shares $ 12.50
Weighted Average Fair Value, Vested during period (USD per share) | $ / shares 12.71
Weighted Average Fair Value, Forfeited during period (USD per share) | $ / shares 12.29
Weighted Average Fair Value, Nonvested at period (USD per share) | $ / shares $ 12.47