Note 13 - Business Segment Information (Details Textual) $ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($)	Mar. 31, 2017
Corporate, Non-Segment [Member]
Increase (Decrease) in Total Assets	$ (1.4)
Customer Concentration Risk [Member] | Sales Revenue, Net [Member]
Number of Major Customers	0	0
Golf and Related Operations [Member]
Number of Golf Courses	3
Increase (Decrease) in Total Assets	$ 1.7
Waste Management Services [Member]
Increase (Decrease) in Total Assets	$ (1.4)