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COMMITMENTS AND CONTINGENCIES (Narrative) (Details)
€ in Thousands, $ in Thousands
1 Months Ended 12 Months Ended
Aug. 31, 2017
USD ($)
Aug. 31, 2017
EUR (€)
Dec. 31, 2019
USD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2019
EUR (€)
Feb. 28, 2019
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2018
EUR (€)
Mar. 31, 2016
USD ($)
Apr. 30, 2013
EUR (€)
Commitments And Contingencies [Line Items]                    
Outstanding letters of credit     $ 733       $ 233      
Guarantees as security     2,596       2,603      
Claim against company for wrongful termination     637              
Agency fee payable     $ 3,363     $ 3,000        
Liability for back wages balance             508      
Accrued interest balance for back wages liability             $ 263      
Commision expected to be received by third party           5.00%        
Sale consideration, fee $ 2,242                  
Minimum Wage Increase [Member]                    
Commitments And Contingencies [Line Items]                    
Settlement amount       $ 1,628            
Minimum [Member]                    
Commitments And Contingencies [Line Items]                    
Agency fee payable                 $ 4,000  
Commision expected to be received by third party 2.00% 2.00%             2.00%  
Maximum [Member]                    
Commitments And Contingencies [Line Items]                    
Commision expected to be received by third party 10.00% 10.00%             5.00%  
Euro Member Countries, Euro [Member]                    
Commitments And Contingencies [Line Items]                    
Guarantees as security | €         € 2,316     € 2,275    
Agency fee payable | €                   € 3,000
Euro Member Countries, Euro [Member] | Minimum [Member]                    
Commitments And Contingencies [Line Items]                    
Sale consideration, fee | €   € 2,000