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GOODWILL AND OTHER INTANGIBLE ASSETS (Summary of Intangible Assets) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Amortized intangible assets:      
Gross Carrying Amount $ 77,470 $ 85,506  
Accumulated Amortization (44,260) (45,461)  
Net Value 33,210 40,045  
Aggregate amortization expense 4,246 5,325 $ 5,033
Future estimated amortization expense      
2016 3,654    
2017 3,243    
2018 3,241    
2019 3,027    
2020 and thereafter $ 20,045    
Weighted Average      
Amortized intangible assets:      
Amortization Period 8 years 3 months 18 days    
Patents      
Amortized intangible assets:      
Gross Carrying Amount $ 15,358 17,001  
Accumulated Amortization (15,330) (16,852)  
Net Value $ 28 149  
Patents | Weighted Average      
Amortized intangible assets:      
Amortization Period 1 month 6 days    
Acquired technology      
Amortized intangible assets:      
Gross Carrying Amount $ 32,030 35,701  
Accumulated Amortization (8,543) (5,950)  
Net Value $ 23,487 29,751  
Acquired technology | Weighted Average      
Amortized intangible assets:      
Amortization Period 15 years    
License agreements and other      
Amortized intangible assets:      
Gross Carrying Amount $ 30,082 32,804  
Accumulated Amortization (20,387) (22,659)  
Net Value $ 9,695 $ 10,145  
License agreements and other | Weighted Average      
Amortized intangible assets:      
Amortization Period 5 years 3 months 18 days