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Long-term debt consists of the following: (Details)
€ in Millions
12 Months Ended
Dec. 31, 2022
USD ($)
Number
Dec. 31, 2022
EUR (€)
Number
Dec. 31, 2021
USD ($)
Apr. 30, 2021
USD ($)
Apr. 30, 2021
EUR (€)
Debt Instrument [Line Items]          
Loan payable $ 180,041,000   $ 148,803,000    
Less current maturities 28,547,000   15,911,000    
Total 151,494,000   132,902,000    
Loans Payable [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Face Amount $ 53,300,000 € 50      
Number of installments | Number 48 48      
Installment amount (in Dollars) $ 1,100,000,000        
Interest per annum 0.825% 0.825%      
Loan payable $ 52,061,000      
Loans Payable One [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Face Amount $ 135,900,000     $ 128,000,000.0 € 120
Number of installments | Number 120 120      
Installment amount (in Dollars) $ 1,100,000,000        
Interest per annum 0.75% 0.75%      
Loan payable $ 104,758,000   124,375,000    
Loans Payable Two [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Face Amount $ 15,000,000.0        
Number of installments | Number 14 14      
Installment amount (in Dollars) $ 1,100,000,000        
Interest per annum 4.10% 4.10%      
Loan payable $ 9,890,000   10,569,000    
Loans Payable Three [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Face Amount $ 17,000,000        
Number of installments | Number 10 10      
Installment amount (in Dollars) $ 1,700,000,000        
Interest per annum 2.00% 2.00%      
Loan payable $ 13,332,000   $ 13,859,000