Note 13 - Business Segment Information (Details Textual) $ in Millions	6 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2018
Corporate, Non-Segment [Member]
Increase (Decrease) in Total Assets	$ 3.9
Waste Management Services [Member]
Increase (Decrease) in Total Assets	1.6
Golf and Related Operations [Member]
Increase (Decrease) in Total Assets	$ 6.7
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	0
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Golf and Related Operations [Member]
Number of Major Customers	0	0