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COMMON STOCK AND STOCK INCENTIVE PLANS (Details 3) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Stock Options Outstanding  
Number outstanding (in shares) 576
Weighted-average remaining contractual life 3 years 7 months 6 days
Weighted-average exercise price per share (in dollars per share) $ 21.26
Stock Options Exercisable  
Number Exercisable (in shares) 376
Weighted-average exercise price per share (in dollars per share) $ 30.72
Options exercisable and expected to vest at the end of the period  
Number of options exercisable (in shares) 376
Weighted-average exercise price per share of options exercisable (in dollars per share) $ 30.72
Number of options expected to vest (in shares) 200
Weighted-average exercise price per share of options expected to vest (in dollars per share) $ 3.46
$ 2.97 - $ 2.97
  
COMMON STOCK AND STOCK INCENTIVE PLANS  
Exercise price, low end of range (in dollars per share) $ 2.97
Exercise price, high end of range (in dollars per share) $ 2.97
Stock Options Outstanding  
Number outstanding (in shares) 27
Weighted-average remaining contractual life 5 years 9 months 29 days
Weighted-average exercise price per share (in dollars per share) $ 2.97
Stock Options Exercisable  
Number Exercisable (in shares) 7
Weighted-average exercise price per share (in dollars per share) $ 2.97
$ 3.21 - $ 3.21
  
COMMON STOCK AND STOCK INCENTIVE PLANS  
Exercise price, low end of range (in dollars per share) $ 3.21
Exercise price, high end of range (in dollars per share) $ 3.21
Stock Options Outstanding  
Number outstanding (in shares) 202
Weighted-average remaining contractual life 5 years 7 months 24 days
Weighted-average exercise price per share (in dollars per share) $ 3.21
Stock Options Exercisable  
Number Exercisable (in shares) 57
Weighted-average exercise price per share (in dollars per share) $ 3.21
$ 4.14 - $ 4.17
  
COMMON STOCK AND STOCK INCENTIVE PLANS  
Exercise price, low end of range (in dollars per share) $ 4.14
Exercise price, high end of range (in dollars per share) $ 4.17
Stock Options Outstanding  
Number outstanding (in shares) 73
Weighted-average remaining contractual life 4 years 9 months 14 days
Weighted-average exercise price per share (in dollars per share) $ 4.16
Stock Options Exercisable  
Number Exercisable (in shares) 44
Weighted-average exercise price per share (in dollars per share) $ 4.16
$6.51 - $8.70
  
COMMON STOCK AND STOCK INCENTIVE PLANS  
Exercise price, low end of range (in dollars per share) $ 6.51
Exercise price, high end of range (in dollars per share) $ 8.7
Stock Options Outstanding  
Number outstanding (in shares) 59
Weighted-average remaining contractual life 2 years 10 months 24 days
Weighted-average exercise price per share (in dollars per share) $ 7.12
Stock Options Exercisable  
Number Exercisable (in shares) 53
Weighted-average exercise price per share (in dollars per share) $ 7.19
$9.72 - $9.72
  
COMMON STOCK AND STOCK INCENTIVE PLANS  
Exercise price, low end of range (in dollars per share) $ 9.72
Exercise price, high end of range (in dollars per share) $ 9.72
Stock Options Outstanding  
Number outstanding (in shares) 50
Weighted-average remaining contractual life 1 year 3 months
Weighted-average exercise price per share (in dollars per share) $ 9.72
Stock Options Exercisable  
Number Exercisable (in shares) 50
Weighted-average exercise price per share (in dollars per share) $ 9.72
$18.75 - $18.75
  
COMMON STOCK AND STOCK INCENTIVE PLANS  
Exercise price, low end of range (in dollars per share) $ 18.75
Exercise price, high end of range (in dollars per share) $ 18.75
Stock Options Outstanding  
Number outstanding (in shares) 80
Weighted-average remaining contractual life 2 years 1 month 17 days
Weighted-average exercise price per share (in dollars per share) $ 18.75
Stock Options Exercisable  
Number Exercisable (in shares) 80
Weighted-average exercise price per share (in dollars per share) $ 18.75
$19.83 - $63.48
  
COMMON STOCK AND STOCK INCENTIVE PLANS  
Exercise price, low end of range (in dollars per share) $ 19.83
Exercise price, high end of range (in dollars per share) $ 63.48
Stock Options Outstanding  
Number outstanding (in shares) 7
Weighted-average remaining contractual life 1 year 8 months 5 days
Weighted-average exercise price per share (in dollars per share) $ 24.77
Stock Options Exercisable  
Number Exercisable (in shares) 7
Weighted-average exercise price per share (in dollars per share) $ 24.77
$79.02 - $79.02
  
COMMON STOCK AND STOCK INCENTIVE PLANS  
Exercise price, low end of range (in dollars per share) $ 79.02
Exercise price, high end of range (in dollars per share) $ 79.02
Stock Options Outstanding  
Number outstanding (in shares) 2
Weighted-average remaining contractual life 3 months 25 days
Weighted-average exercise price per share (in dollars per share) $ 79.02
Stock Options Exercisable  
Number Exercisable (in shares) 2
Weighted-average exercise price per share (in dollars per share) $ 79.02
$89.70 - $89.70
  
COMMON STOCK AND STOCK INCENTIVE PLANS  
Exercise price, low end of range (in dollars per share) $ 89.70
Exercise price, high end of range (in dollars per share) $ 89.70
Stock Options Outstanding  
Number outstanding (in shares) 1
Weighted-average remaining contractual life 3 months 11 days
Weighted-average exercise price per share (in dollars per share) $ 89.70
Stock Options Exercisable  
Number Exercisable (in shares) 1
Weighted-average exercise price per share (in dollars per share) $ 89.70
$ 112.38 - $ 112.38
  
COMMON STOCK AND STOCK INCENTIVE PLANS  
Exercise price, low end of range (in dollars per share) $ 112.38
Exercise price, high end of range (in dollars per share) $ 112.38
Stock Options Outstanding  
Number outstanding (in shares) 75
Weighted-average remaining contractual life 18 days
Weighted-average exercise price per share (in dollars per share) $ 112.38
Stock Options Exercisable  
Number Exercisable (in shares) 75
Weighted-average exercise price per share (in dollars per share) $ 112.38