Note 2 - Acquisitions - Purchase Price Allocation (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Oct. 01, 2021	Dec. 14, 2020
Goodwill	$ 10,496	$ 10,496
Shaw Stainless & Alloy, Inc [Member]
Accounts receivable, net			$ 1,510
Inventories			3,129
Property and equipment			1,886
Prepaid expenses and other			5,986
Goodwill			5,262
Intangible assets			2,750
Total assets acquired			20,523
Total liabilities assumed			(8,418)
Cash paid			$ 12,105
Action Stainless & Alloys, Inc. [Member]
Accounts receivable, net				$ 3,239
Inventories				3,656
Property and equipment				10,610
Prepaid expenses and other				204
Goodwill				1,894
Intangible assets				4,410
Total assets acquired				24,013
Total liabilities assumed				(4,513)
Cash paid				$ 19,500