Note H - Derivative Financial Instruments - Net Fair Value of Derivative Financial Instruments (Details) - Designated as Hedging Instrument [Member] - Hot-rolled Coil Future Contract [Member] - Other Current Assets [Member]	Dec. 31, 2020 USD ($)
Long [Member]
Derivative asset	$ 2,862,580
Short [Member]
Derivative liabilities	$ 1,422,460

Note H - Derivative Financial Instruments - Net Fair Value of Derivative Financial Instruments (Details) - Designated as Hedging Instrument [Member] - Hot-rolled Coil Future Contract [Member] - Other Current Assets [Member]

Dec. 31, 2020

USD ($)

Derivative asset

$ 2,862,580

Short [Member]

Derivative liabilities

$ 1,422,460