Note 1 - Basis of Preparation and Presentation (Details Textual)	Dec. 31, 2022
Number of States in which Entity Operates	8
Seneca Food Plants [Member]
Number of Real Estate Properties	26

The number of states the entity operates in as of the balance sheet date.

No definition available.

Name:	us-gaap_NumberOfStatesInWhichEntityOperates
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant