Note 17 - Segment Information (Details Textual) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($) a	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) a
Segment Reporting Information [Line Items]
Increase (decrease) in employee benefit reserves	$ (4)	$ (3)	$ (8)
Gross Profit [Member]
Segment Reporting Information [Line Items]
Increase (decrease) in employee benefit reserves	(2)	(2)	(5)
Selling, General and Administrative Expenses [Member]
Segment Reporting Information [Line Items]
Increase (decrease) in employee benefit reserves	$ (2)	$ (1)	$ (3)
Eastman Business Park [Member] | Minimum [Member]
Segment Reporting Information [Line Items]
Area of Real Estate Property | a	1,200		1,200