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OPERATING AND GEOGRAPHICAL SEGMENTS - Narrative (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
USD ($)
Customer
distributor
Jun. 30, 2014
Customer
distributor
Jun. 30, 2015
USD ($)
Customer
distributor
Jun. 30, 2014
distributor
Dec. 31, 2014
USD ($)
Concentration Risk [Line Items]          
Goodwill $ 191,451   $ 191,451   $ 191,088
Finite-Lived Intangible Assets, Net 44,019   44,019   50,286
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent 116,100   116,100   117,300
Auction-rate securities          
Concentration Risk [Line Items]          
Investment Owned, at Fair Value $ 1,100   $ 1,100   $ 1,100
Sales Revenue, Goods, Net | Customer Concentration Risk          
Concentration Risk [Line Items]          
Concentration Risk, Number of Major Customers | Customer 0 0 0    
Accounts Receivable | Credit Concentration Risk          
Concentration Risk [Line Items]          
Concentration Risk, Number of Major Distributor | distributor     1 3  
Concentration Risk, Number of Major Customers | distributor     0 0  
Major Distributor with Largest Balance | Sales Revenue, Goods, Net          
Concentration Risk [Line Items]          
Concentration Risk, Percentage 19.00% 17.00% 18.00% 16.00%  
Major Distributor with Largest Balance | Sales Revenue, Goods, Net | Customer Concentration Risk          
Concentration Risk [Line Items]          
Concentration Risk, Number of Major Distributor | distributor 1 1 1 2  
Major Distributor with Largest Balance | Accounts Receivable | Credit Concentration Risk          
Concentration Risk [Line Items]          
Concentration Risk, Percentage     16.00% 22.00%  
Major Customer with Largest Balance | Sales Revenue, Goods, Net | Credit Concentration Risk          
Concentration Risk [Line Items]          
Concentration Risk, Percentage 10.00% 10.00% 10.00%    
Major Customer with Largest Balance | Accounts Receivable | Credit Concentration Risk          
Concentration Risk [Line Items]          
Concentration Risk, Percentage     10.00% 10.00%  
Major Distributor with Second Largest Balance | Sales Revenue, Goods, Net          
Concentration Risk [Line Items]          
Concentration Risk, Percentage       11.00%  
Major Distributor with Second Largest Balance | Accounts Receivable | Credit Concentration Risk          
Concentration Risk [Line Items]          
Concentration Risk, Percentage       11.00%  
Major Distributor with Third Largest Balance | Accounts Receivable | Credit Concentration Risk          
Concentration Risk [Line Items]          
Concentration Risk, Percentage       11.00%