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SIGNIFICANT CUSTOMERS AND GEOGRAPHIC NET REVENUES Customer and Credit Risk Concentration (Details)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2018
USD ($)
Customer
Jun. 30, 2017
USD ($)
Customer
Jun. 30, 2018
USD ($)
Customer
Jun. 30, 2017
USD ($)
Customer
Dec. 31, 2017
Customer
Concentration Risk [Line Items]          
NET REVENUES | $ $ 109,482 $ 107,563 $ 212,563 $ 212,251  
Distributors [Member]          
Concentration Risk [Line Items]          
NET REVENUES | $ $ 83,000 $ 85,500 $ 162,100 $ 166,100  
Sales Revenue, Goods, Net | Customer Concentration Risk [Member]          
Concentration Risk [Line Items]          
Number of major customers 1 1 1 1  
Concentration risk percentage benchmark 10.00% 10.00% 10.00% 10.00%  
Sales Revenue, Goods, Net | Customer Concentration Risk [Member] | Avnet          
Concentration Risk [Line Items]          
Concentration risk, percentage of total net revenues 14.00% 16.00% 15.00% 17.00%  
Sales Revenue, Goods, Net | Customer Concentration Risk [Member] | Ten Customers          
Concentration Risk [Line Items]          
Number of major customers 10 10 10 10  
Concentration risk, percentage of total net revenues 59.00% 57.00% 58.00% 57.00%  
Accounts Receivable | Credit Concentration Risk [Member]          
Concentration Risk [Line Items]          
Number of major customers 10   10   10
Concentration risk percentage benchmark for accounts receivable (more than) 10.00%   10.00%   10.00%
Accounts Receivable | Credit Concentration Risk [Member] | Avnet          
Concentration Risk [Line Items]          
Concentration risk percentage benchmark 21.00%   21.00%   18.00%
Accounts Receivable | Credit Concentration Risk [Member] | Ten Customers          
Concentration Risk [Line Items]          
Concentration risk percentage benchmark 65.00%   65.00%   64.00%