Note 9 - Guarantees (Details Textual) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($) a
Warranty Arrangement Period [Member]
Extended Warranty Period (Year)	1 year
Minimum [Member]
Environmental Settlement, Historical Liabilities Trigger Amount | $	$ 99
Extended Warranty Period (Year)	3 months
Maximum [Member]
Percentage of Liability Above 99 Million	50.00%
Extended Warranty Period (Year)	6 years
Eastman Business Park Rochester N Y [Member] | Minimum [Member]
Area of Real Estate Property (Acre) | a	1,200