Note 13 - Business Segment Information (Details Textual) $ in Millions	6 Months Ended
	Jun. 30, 2020 USD ($)	Jun. 30, 2019
Waste Management Services [Member]
Increase (Decrease) in Total Assets	$ (3.1)
Golf and Related Operations [Member]
Increase (Decrease) in Total Assets	3.2
Corporate Segment [Member]
Increase (Decrease) in Total Assets	$ 2.8
Customer Concentration Risk [Member] | Revenue Benchmark [Member]
Number of Major Customers	0	0
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Waste Management Services [Member]
Number of Major Customers	0
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Golf and Related Operations [Member]
Number of Major Customers	0	0