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STOCK PLANS AND SHARE BASED COMPENSATION (Option Activity) (Details) - Stock Options [Member] - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Option activity under the Plans      
Outstanding, shares, beginning of period 1,030 1,344 1,691
Outstanding, weighted-average exercise price, beginning of period (per share) $ 27.58 $ 27.27 $ 27.34
Granted, shares 0 0 0
Granted, weighted-average exercise price (per share) $ 0.00 $ 0.00 $ 0.00
Exercised, shares (333) (311) (347)
Exercised, weighted-average exercise price (per share) $ 25.41 $ 26.11 $ 27.64
Forfeited or expired, shares 0 (3) 0
Forfeited or expired, weighted-average exercise price (per share) $ 0.00 $ 37.97 $ 0.00
Outstanding, shares, end of period 697 1,030 1,344
Outstanding, weighted-average exercise price, end of period (per share) $ 28.62 $ 27.58 $ 27.27
Outstanding, weighted-average remaining contractual term (in years) 2 years 9 months 25 days    
Outstanding, aggregate intrinsic value $ 27,370    
Exercisable, shares 697    
Exercisable, weighted-average exercise price (per share) $ 28.62    
Exercisable, weighted-average remaining contractual term (in years) 2 years 9 months 25 days    
Exercisable, aggregate intrinsic value $ 27,370    
Vested and expected to vest, shares 697    
Vested and expected to vest, weighted-average exercise price (per share) $ 28.62    
Vested and expected to vest, weighted-average remaining contractual term (in years) 2 years 9 months 25 days    
Vested and expected to vest, aggregate intrinsic value $ 27,370    
Total intrinsic value of options exercised $ 11,500 $ 7,000 $ 9,900