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Note 9 - Fair Value of Assets and Liabilities - Fair Value Measurements, Recorded (Details) - Fair Value, Recurring [Member] - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Total assets at fair value $ 3,471 $ 2,286
Total liabilities recorded at fair value 1,796 4,947
Fair Value, Inputs, Level 1 [Member]    
Total assets at fair value 0 0
Total liabilities recorded at fair value 0 0
Fair Value, Inputs, Level 2 [Member]    
Total assets at fair value 3,471 2,286
Total liabilities recorded at fair value 1,796 4,947
Fair Value, Inputs, Level 3 [Member]    
Total assets at fair value 0 0
Total liabilities recorded at fair value 0 0
Metal Swaps [Member]    
Derivative asset 1,501 2,286
Derivative liability 1,796 2,178
Metal Swaps [Member] | Fair Value, Inputs, Level 1 [Member]    
Derivative asset 0 0
Derivative liability 0 0
Metal Swaps [Member] | Fair Value, Inputs, Level 2 [Member]    
Derivative asset 1,501 2,286
Derivative liability 1,796 2,178
Metal Swaps [Member] | Fair Value, Inputs, Level 3 [Member]    
Derivative asset 0 0
Derivative liability 0 0
Embedded Customer Derivatives [Member]    
Derivative asset 295  
Derivative liability   108
Embedded Customer Derivatives [Member] | Fair Value, Inputs, Level 1 [Member]    
Derivative asset 0  
Derivative liability   0
Embedded Customer Derivatives [Member] | Fair Value, Inputs, Level 2 [Member]    
Derivative asset 295  
Derivative liability   108
Embedded Customer Derivatives [Member] | Fair Value, Inputs, Level 3 [Member]    
Derivative asset 0  
Derivative liability   0
Interest Rate Swap [Member]    
Derivative asset 1,675  
Derivative liability   2,661
Interest Rate Swap [Member] | Fair Value, Inputs, Level 1 [Member]    
Derivative asset 0  
Derivative liability   0
Interest Rate Swap [Member] | Fair Value, Inputs, Level 2 [Member]    
Derivative asset 1,675  
Derivative liability   2,661
Interest Rate Swap [Member] | Fair Value, Inputs, Level 3 [Member]    
Derivative asset $ 0  
Derivative liability   $ 0