Annual report pursuant to Section 13 and 15(d)

Bank and Other Borrowings - Additional Information (Details)

v3.20.1
Bank and Other Borrowings - Additional Information (Details)
12 Months Ended
Aug. 02, 2019
EUR (€)
Jul. 25, 2019
EUR (€)
Jul. 23, 2019
EUR (€)
Apr. 30, 2019
EUR (€)
Apr. 10, 2019
EUR (€)
Jan. 30, 2019
EUR (€)
Jul. 23, 2018
EUR (€)
Jul. 27, 2017
EUR (€)
Facility
Repayment
Feb. 15, 2017
EUR (€)
Repayment
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Nov. 15, 2017
EUR (€)
Bank and Other Borrowings [Line Items]                        
Current portion of bank and other borrowings                   $ 11,243,000 $ 4,686,000  
Long-term bank and other borrowings, current                   7,500,000 3,000,000  
Credit line facilities                   3,700,000 1,600,000  
Line of credit facility, maximum borrowing capacity                   5,600,000 4,600,000  
Line of credit facility, used                   $ 3,700,000 1,600,000  
Interest variable rates                   1.00%    
Weighted average interest rate                   1.35%    
Debt issuance costs                   $ 169,000    
Interest expense                   565,000 322,000  
Unicredit S.p.A. | Medium Term Financing Agreement                        
Bank and Other Borrowings [Line Items]                        
Interest variable rates 3.90%                      
Debt instrument face amount € 2,500,000                 $ 2,800,000    
Frequency of periodic repayment                   quarterly    
Description of variable rate                   Euribor 3 months plus 3.9% spread    
Unicredit S.p.A. | Long Term Financing Agreement                        
Bank and Other Borrowings [Line Items]                        
Debt instrument face amount               € 8,200,000   $ 9,600,000    
Number of facilities | Facility               2        
Unicredit S.p.A. | Long Term Financing Agreement | Line A                        
Bank and Other Borrowings [Line Items]                        
Line of credit facility, maximum borrowing capacity               € 4,900,000     5,700,000  
Frequency of periodic repayment                   quarterly    
Number of frequency repayment | Repayment               16        
Debt instrument, maturity year               2022        
Unicredit S.p.A. | Long Term Financing Agreement | Tranche 1                        
Bank and Other Borrowings [Line Items]                        
Debt instrument face amount               € 4,700,000     5,500,000  
Unicredit S.p.A. | Long Term Financing Agreement | Tranche 2                        
Bank and Other Borrowings [Line Items]                        
Debt instrument additional face amount                     236,000 € 200,000
Unicredit S.p.A. | Long Term Financing Agreement | Line B                        
Bank and Other Borrowings [Line Items]                        
Line of credit facility, maximum borrowing capacity               € 3,300,000     3,900,000  
Frequency of periodic repayment                   quarterly    
Maturity, month and year               2023-05        
Intesa SanPaolo S.p.A. | Medium Term Financing Agreement                        
Bank and Other Borrowings [Line Items]                        
Interest variable rates   2.60%                    
Debt instrument face amount   € 4,000,000               $ 4,500,000    
Frequency of periodic repayment                   quarterly    
Description of variable rate                   Euribor 3 months plus 2.6% spread    
Debt instrument maturity period   48 months                    
Intesa SanPaolo S.p.A. | 2018 Medium-term Financing Agreement                        
Bank and Other Borrowings [Line Items]                        
Debt instrument face amount             € 1,500,000     $ 1,700,000    
Frequency of periodic repayment                   quarterly    
Maturity, month and year             2021-07          
Banco Popolare di Milano S.p.A. | Medium Term Financing Agreement                        
Bank and Other Borrowings [Line Items]                        
Interest variable rates     2.00%                  
Debt instrument face amount     € 4,000,000             $ 4,500,000    
Frequency of periodic repayment                   quarterly    
Description of variable rate                   Euribor 3 months plus 2.0% spread    
Debt instrument maturity period     24 months                  
Banco Popolare di Milano S.p.A. | Long Term Financing Agreement                        
Bank and Other Borrowings [Line Items]                        
Debt instrument face amount       € 1,200,000           $ 1,300,000    
Frequency of periodic repayment                   quarterly    
Maturity, month and year       2023-06                
UBI Banca S.p.A | Medium Term Financing Agreement                        
Bank and Other Borrowings [Line Items]                        
Debt instrument face amount                 € 1,000,000   $ 1,100,000  
Frequency of periodic repayment                   quarterly    
Maturity, month and year                 2021-02      
Number of frequency repayment | Repayment                 12      
UBI Banca S.p.A | Long Term Financing Agreement                        
Bank and Other Borrowings [Line Items]                        
Debt instrument face amount         € 2,000,000         $ 2,200,000    
Frequency of periodic repayment                   monthly    
Maturity, month and year         2021-04              
Monte dei Paschi di Siena S.p.A.                        
Bank and Other Borrowings [Line Items]                        
Interest variable rates                   0.95%    
Maturity, month and year                   2022-04    
Monte dei Paschi di Siena S.p.A. | Long Term Financing Agreement                        
Bank and Other Borrowings [Line Items]                        
Debt instrument face amount         € 600,000         $ 673,000    
Frequency of periodic repayment                   monthly    
Maturity, month and year         2022-04              
Simest | Long Term Financing Agreement                        
Bank and Other Borrowings [Line Items]                        
Debt instrument face amount           € 608,000       $ 682,000    
Frequency of periodic repayment                   quarterly    
Maturity, month and year           2022-12            
Minimum                        
Bank and Other Borrowings [Line Items]                        
Interest variable rates                   0.60%    
Maximum                        
Bank and Other Borrowings [Line Items]                        
Interest variable rates                   7.60%