Note 12 - Fair Value of Assets and Liabilities - Fair Value Measurements, Recorded (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Total assets at fair value	$ 1,748	$ 2,286
Total liabilities recorded at fair value		4,839
Fair Value, Inputs, Level 1 [Member]
Total assets at fair value	0	0
Total liabilities recorded at fair value		0
Fair Value, Inputs, Level 2 [Member]
Total assets at fair value	1,748	2,286
Total liabilities recorded at fair value		4,839
Fair Value, Inputs, Level 3 [Member]
Total assets at fair value	0	0
Total liabilities recorded at fair value		0
Metal Swaps [Member]
Fixed interest rate hedge		2,286
Derivative Liability, Total		2,178
Metal Swaps [Member] | Fair Value, Inputs, Level 1 [Member]
Fixed interest rate hedge		0
Derivative Liability, Total		0
Metal Swaps [Member] | Fair Value, Inputs, Level 2 [Member]
Fixed interest rate hedge		2,286
Derivative Liability, Total		2,178
Metal Swaps [Member] | Fair Value, Inputs, Level 3 [Member]
Fixed interest rate hedge		0
Derivative Liability, Total		0
Interest Rate Swap [Member]
Fixed interest rate hedge	1,748
Derivative Liability, Total		2,661
Interest Rate Swap [Member] | Fair Value, Inputs, Level 1 [Member]
Fixed interest rate hedge	0
Derivative Liability, Total		0
Interest Rate Swap [Member] | Fair Value, Inputs, Level 2 [Member]
Fixed interest rate hedge	1,748
Derivative Liability, Total		2,661
Interest Rate Swap [Member] | Fair Value, Inputs, Level 3 [Member]
Fixed interest rate hedge	$ 0
Derivative Liability, Total		$ 0