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STOCK-BASED COMPENSATION (Details 3) (USD $)
12 Months Ended
Dec. 31, 2013
Stock options outstanding and exercisable by range of exercise prices  
Options Outstanding (in shares) 1,038,999
Options Outstanding - Weighted Average Remaining Contractual Term 4 years 9 months 7 days
Options Outstanding - Weighted Average Exercise Price (in dollars per share) $ 8.98
Options Exercisable at the end of the period (in shares) 887,707
Options Exercisable - Weighted Average Exercise Price (in dollars per share) $ 9.34
$0.01 to $4.99
 
Stock options outstanding and exercisable by range of exercise prices  
Exercise price, low end of the range (in dollars per share) $ 0.01
Exercise price, high end of the range (in dollars per share) $ 4.99
Options Outstanding (in shares) 164
Options Outstanding - Weighted Average Remaining Contractual Term 2 months 16 days
Options Outstanding - Weighted Average Exercise Price (in dollars per share) $ 2.61
Options Exercisable at the end of the period (in shares) 164
Options Exercisable - Weighted Average Exercise Price (in dollars per share) $ 2.61
$5.00 to $7.45
 
Stock options outstanding and exercisable by range of exercise prices  
Exercise price, low end of the range (in dollars per share) $ 5.00
Exercise price, high end of the range (in dollars per share) $ 7.45
Options Outstanding (in shares) 304,183
Options Outstanding - Weighted Average Remaining Contractual Term 7 years 8 months 16 days
Options Outstanding - Weighted Average Exercise Price (in dollars per share) $ 6.65
Options Exercisable at the end of the period (in shares) 152,891
Options Exercisable - Weighted Average Exercise Price (in dollars per share) $ 6.39
$7.46 to $9.99
 
Stock options outstanding and exercisable by range of exercise prices  
Exercise price, low end of the range (in dollars per share) $ 7.46
Exercise price, high end of the range (in dollars per share) $ 9.99
Options Outstanding (in shares) 601,783
Options Outstanding - Weighted Average Remaining Contractual Term 4 years 7 days
Options Outstanding - Weighted Average Exercise Price (in dollars per share) $ 8.46
Options Exercisable at the end of the period (in shares) 601,783
Options Exercisable - Weighted Average Exercise Price (in dollars per share) $ 8.46
$10.00 to $14.99
 
Stock options outstanding and exercisable by range of exercise prices  
Exercise price, low end of the range (in dollars per share) $ 10.00
Exercise price, high end of the range (in dollars per share) $ 14.99
Options Outstanding (in shares) 6,081
Options Outstanding - Weighted Average Remaining Contractual Term 8 months 27 days
Options Outstanding - Weighted Average Exercise Price (in dollars per share) $ 12.24
Options Exercisable at the end of the period (in shares) 6,081
Options Exercisable - Weighted Average Exercise Price (in dollars per share) $ 12.24
$15.00 to $19.99
 
Stock options outstanding and exercisable by range of exercise prices  
Exercise price, low end of the range (in dollars per share) $ 15.00
Exercise price, high end of the range (in dollars per share) $ 19.99
Options Outstanding (in shares) 80,125
Options Outstanding - Weighted Average Remaining Contractual Term 1 year 5 months 5 days
Options Outstanding - Weighted Average Exercise Price (in dollars per share) $ 15.00
Options Exercisable at the end of the period (in shares) 80,125
Options Exercisable - Weighted Average Exercise Price (in dollars per share) $ 15.00
$20.00 to $20.19
 
Stock options outstanding and exercisable by range of exercise prices  
Exercise price, low end of the range (in dollars per share) $ 20.00
Exercise price, high end of the range (in dollars per share) $ 20.19
Options Outstanding (in shares) 46,663
Options Outstanding - Weighted Average Remaining Contractual Term 1 year 5 months 5 days
Options Outstanding - Weighted Average Exercise Price (in dollars per share) $ 20.19
Options Exercisable at the end of the period (in shares) 46,663
Options Exercisable - Weighted Average Exercise Price (in dollars per share) $ 20.19