Note 11 - Business Segment Information (Details Textual)	3 Months Ended
	Mar. 31, 2017 USD ($)	Mar. 31, 2016	Dec. 31, 2016 USD ($)
Deferred Revenue, Current	$ 3,198,000		$ 2,716,000
Customer Concentration Risk [Member] | Sales Revenue, Net [Member]
Number of Major Customers	0	0
Corporate, Non-Segment [Member]
Increase (Decrease) in Total Assets	$ 1,800,000
Golf and Related Operations [Member]
Number of Golf Courses	3
Increase (Decrease) in Total Assets	$ (1,600,000)
Waste Management Services [Member]
Increase (Decrease) in Total Assets	$ 2,000,000