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Fair Value Measurements (Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - Fair value measurements, recurring [Member] - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative assets $ 2,061  
Total financial assets 2,061  
Derivative liabilities 138 $ 4,159
Total financial liabilities 138 4,159
Level 1 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative assets 0  
Total financial assets 0  
Derivative liabilities 0 0
Total financial liabilities 0 0
Level 2 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative assets 2,061  
Total financial assets 2,061  
Derivative liabilities 138 4,159
Total financial liabilities 138 4,159
Level 3 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative assets 0  
Total financial assets 0  
Derivative liabilities 0 0
Total financial liabilities $ 0 $ 0