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NOTES PAYABLE - BANKS (Narrative) (Details)
€ in Thousands, kr in Thousands, $ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2021
EUR (€)
Dec. 31, 2021
EUR (€)
Dec. 31, 2020
EUR (€)
Dec. 31, 2021
SEK (kr)
Dec. 31, 2021
USD ($)
Oct. 31, 2021
USD ($)
Dec. 31, 2020
SEK (kr)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
Debt Instrument [Line Items]                  
Outstanding guarantees   € 1,022     $ 1,161        
Replacement of amount of letter of credit         $ 500        
Commercial bank [Member] | Bank Guarantee Facility [Member]                  
Debt Instrument [Line Items]                  
Interest rate   2.50%              
Unused line fee   0.75%              
United States [Member]                  
Debt Instrument [Line Items]                  
Line of credit, maximum borrowing amount           $ 10,000      
Weighted average interest rate     4.42%       4.42% 4.42% 5.44%
Europe [Member]                  
Debt Instrument [Line Items]                  
Weighted average interest rate   4.80% 4.40% 4.80% 4.80%   4.40% 4.40% 3.50%
Europe [Member] | Commercial bank [Member]                  
Debt Instrument [Line Items]                  
Bank guarantee Amount   € 2,000           $ 2,457  
Line of credit not exceed   70.00%              
Line of Credit [Member] | United States [Member]                  
Debt Instrument [Line Items]                  
Debt instrument, interest rate basis points above reference rate     3.00%            
Line of Credit [Member] | Accounts Receivable [Member] | United States [Member]                  
Debt Instrument [Line Items]                  
Percentage of collateral           85.00%      
Line Of Credit Two [Member] | Unbilled Accounts Receivable [Member] | United States [Member]                  
Debt Instrument [Line Items]                  
Percentage of collateral   80.00%   80.00% 80.00%        
Line Of Credit Three [Member] | Unbilled Accounts Receivable [Member] | United States [Member]                  
Debt Instrument [Line Items]                  
Pledged assets used to secure credit facility           $ 500      
Percentage of collateral           95.00%      
Line of Credit Europe [Member] | Europe [Member]                  
Debt Instrument [Line Items]                  
Line of credit, maximum borrowing amount | € € 12,000                
Debt instrument, interest rate basis points above reference rate 4.80%                
Unused line fee 0.75%                
Line of Credit Europe [Member] | Sweden [Member]                  
Debt Instrument [Line Items]                  
Debt instrument, effective interest rate   2.80%   2.80% 2.80%        
Line of Credit Ten [Member] | Europe [Member]                  
Debt Instrument [Line Items]                  
Credit facility, amount outstanding     € 6,432         7,902  
Line of Credit Ten [Member] | Sweden [Member]                  
Debt Instrument [Line Items]                  
Credit facility, amount outstanding       kr 1,800 $ 199   kr 1,648 202  
Guarantees facility [Member]                  
Debt Instrument [Line Items]                  
Outstanding guarantees   € 1,022 € 973   1,161     $ 1,195  
Guarantees facility [Member] | Europe [Member]                  
Debt Instrument [Line Items]                  
Line of credit, maximum borrowing amount   € 2,500     2,841        
Line of Credit Europe [Member]                  
Debt Instrument [Line Items]                  
Line of credit, maximum borrowing amount       kr 4,000 $ 442