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Note 3 - Revenue Recognition - Disaggregation of Revenues, Percentage (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Percentage of net sales	100.00%	100.00%	100.00%	100.00%
Specialty Metals Flat Products [Member]
Percentage of net sales	25.20%	29.70%	26.70%	30.10%
Carbon Flat Products [Member]
Percentage of net sales	57.90%	53.00%	56.40%	53.30%
Tubular and Pipe Products [Member]
Percentage of net sales	16.90%	17.30%	16.90%	16.60%
Specialty [Member]
Percentage of net sales	25.20%	29.70%	26.70%	30.10%
Specialty [Member] | Specialty Metals Flat Products [Member]
Percentage of net sales	25.20%	29.70%	26.70%	30.10%
Specialty [Member] | Carbon Flat Products [Member]
Percentage of net sales	0.00%	0.00%	0.00%	0.00%
Specialty [Member] | Tubular and Pipe Products [Member]
Percentage of net sales	0.00%	0.00%	0.00%	0.00%
Hot Rolled Products [Member]
Percentage of net sales	32.70%	28.00%	30.10%	29.70%
Hot Rolled Products [Member] | Specialty Metals Flat Products [Member]
Percentage of net sales	0.00%	0.00%	0.00%	0.00%
Hot Rolled Products [Member] | Carbon Flat Products [Member]
Percentage of net sales	32.70%	28.00%	30.10%	29.70%
Hot Rolled Products [Member] | Tubular and Pipe Products [Member]
Percentage of net sales	0.00%	0.00%	0.00%	0.00%
Tube Products [Member]
Percentage of net sales	16.90%	17.30%	16.90%	16.60%
Tube Products [Member] | Specialty Metals Flat Products [Member]
Percentage of net sales	0.00%	0.00%	0.00%	0.00%
Tube Products [Member] | Carbon Flat Products [Member]
Percentage of net sales	0.00%	0.00%	0.00%	0.00%
Tube Products [Member] | Tubular and Pipe Products [Member]
Percentage of net sales	16.90%	17.30%	16.90%	16.60%
Plate Products [Member]
Percentage of net sales	8.90%	13.70%	11.70%	13.20%
Plate Products [Member] | Specialty Metals Flat Products [Member]
Percentage of net sales	0.00%	0.00%	0.00%	0.00%
Plate Products [Member] | Carbon Flat Products [Member]
Percentage of net sales	8.90%	13.70%	11.70%	13.20%
Plate Products [Member] | Tubular and Pipe Products [Member]
Percentage of net sales	0.00%	0.00%	0.00%	0.00%
Coated Products [Member]
Percentage of net sales	6.20%	4.60%	5.40%	4.60%
Coated Products [Member] | Specialty Metals Flat Products [Member]
Percentage of net sales	0.00%	0.00%	0.00%	0.00%
Coated Products [Member] | Carbon Flat Products [Member]
Percentage of net sales	6.20%	4.60%	5.40%	4.60%
Coated Products [Member] | Tubular and Pipe Products [Member]
Percentage of net sales	0.00%	0.00%	0.00%	0.00%
Cold Rolled Products [Member]
Percentage of net sales	4.20%	4.50%	3.90%	4.80%
Cold Rolled Products [Member] | Specialty Metals Flat Products [Member]
Percentage of net sales	0.00%	0.00%	0.00%	0.00%
Cold Rolled Products [Member] | Carbon Flat Products [Member]
Percentage of net sales	4.20%	4.50%	3.90%	4.80%
Cold Rolled Products [Member] | Tubular and Pipe Products [Member]
Percentage of net sales	0.00%	0.00%	0.00%	0.00%
Product and Service, Other [Member]
Percentage of net sales	5.90%	2.20%	5.30%	1.00%
Product and Service, Other [Member] | Specialty Metals Flat Products [Member]
Percentage of net sales	0.00%	0.00%	0.00%	0.00%
Product and Service, Other [Member] | Carbon Flat Products [Member]
Percentage of net sales	5.90%	2.20%	5.30%	1.00%
Product and Service, Other [Member] | Tubular and Pipe Products [Member]
Percentage of net sales	0.00%	0.00%	0.00%	0.00%

X

- Definition

Percentage of revenue, including tax collected from customer, from satisfaction of performance obligation by transferring promised good or service to customer.

+ References

No definition available.

+ Details

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