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SIGNIFICANT ACCOUNTING POLICIES (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 25, 2019
Sep. 30, 2019
Sep. 30, 2019
Jan. 01, 2019
Dec. 31, 2018
Sep. 30, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]            
Operating lease right of use assets   $ 1,330 $ 1,330      
Lease liability arising from the recognition of right-of-use asset   $ 1,431 $ 1,431     $ 0
ASU 2016-02            
New Accounting Pronouncements or Change in Accounting Principle [Line Items]            
Operating lease right of use assets       $ 1,600    
Lease liability arising from the recognition of right-of-use asset       $ 1,700    
Deferred rent         $ 100  
Series B-4 Preferred Stock            
New Accounting Pronouncements or Change in Accounting Principle [Line Items]            
Additional issue of preferred stock (in shares)   1,875,000 1,875,000      
Stock conversion ratio (shares)   1 1      
Redemption period     5 years      
Preferred stock redemption price 145.00% 145.00% 145.00%