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LICENSE, SETTLEMENT AND RELEASE AGREEMENT (Details)
$ in Thousands
9 Months Ended
Jan. 13, 2017
USD ($)
Jan. 15, 2016
USD ($)
Dec. 31, 2015
USD ($)
Dec. 30, 2015
USD ($)
Jan. 16, 2015
USD ($)
Sep. 24, 2014
USD ($)
Sep. 30, 2015
USD ($)
Sep. 30, 2016
USD ($)
Jul. 01, 2016
USD ($)
Mar. 31, 2016
USD ($)
Apr. 07, 2015
patent
Forecast                      
Finite-Lived Intangible Assets [Line Items]                      
License revenue $ 3,700                    
Patents                      
Finite-Lived Intangible Assets [Line Items]                      
License revenue             $ 700        
License fee receivable             $ 1,000        
Licensing Agreements                      
Finite-Lived Intangible Assets [Line Items]                      
License fee receivable           $ 8,000          
License agreement installment   $ 2,000     $ 2,000 $ 3,000          
Licensing Agreements | Forecast                      
Finite-Lived Intangible Assets [Line Items]                      
License agreement installment $ 1,000                    
United States-based Third Party | Licensing Agreements                      
Finite-Lived Intangible Assets [Line Items]                      
Sale of patent in license agreement       $ 3,650              
Cash received from license agreement       1,000              
Receivable related to license agreement       2,650              
License revenue     $ 1,000                
License fee receivable       $ 3,650              
United States-based Third Party | Licensing Agreements | Forecast                      
Finite-Lived Intangible Assets [Line Items]                      
Receivable related to license agreement               $ 1,000 $ 1,650    
F-Secure Corporation | Patents                      
Finite-Lived Intangible Assets [Line Items]                      
Receivable related to license agreement                   $ 300  
Number of patents sold in license agreement | patent                     2