Note 7 - Intangible Assets and Goodwill (Details Textual) - USD ($) $ in Thousands		12 Months Ended
	Apr. 04, 2019	Dec. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets, Remaining Amortization Period (Year)		9 years 10 months 24 days
Goodwill, Impairment Loss		$ 0	$ 3,915
Customer Relationships [Member]
Finite-Lived Intangible Asset, Useful Life (Year)		15 years
Customer Relationships [Member] | MGI Grain Processing, LLC [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	15 years