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COMMON STOCK AND STOCK INCENTIVE PLANS (Summary of Stock Options Activity) (Details) - Employee and Directors Stock Options [Member] - $ / shares
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Number of shares outstanding      
Options Outstanding at the beginning of the period (in shares) 558,000 576,000 930,000
Options Granted (in shares) 127,000
Options Exercised (in shares) (12,000)
Options Forfeited or Expired (in shares) (131,000) (145,000) (354,000)
Options Outstanding at the end of the period (in shares) 415,000 558,000 576,000
Weighted average exercise price      
Options Outstanding at the beginning of the period (in dollars per share) $ 6.33 $ 21.25 $ 20.04
Options Granted (in dollars per share) $ 2.83
Options Exercised (in dollars per share) $ 3.48
Options Forfeited or Expired (in dollars per share) 7.30 $ 62.79 $ 18.05
Options Outstanding at the end of the period (in dollars per share) $ 6.11 $ 6.33 $ 21.25