Note 20 - Segment Information (Details Textual)	12 Months Ended
	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Number of Operating Segments	2
Revenue from Contract with Customer, Including Assessed Tax	$ 110,121,000	$ 97,434,000
International Operation [Member]
Export Sales	3,548,000	4,463,000
Revenues, Total	51,228,000	45,445,000
Long-Lived Assets	9,504,000	7,083,000
Net Assets, Ending Balance	16,866,000	$ 16,336,000
Intersegment Eliminations [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 0