Note 13 - Business Segment Information - Identifiable Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Total assets	$ 67,571	$ 65,378
Operating Segments [Member]
Total assets	123,690	121,186
Operating Segments [Member] | Waste Management Services [Member]
Total assets	27,861	26,449
Operating Segments [Member] | Golf and Related Operations [Member]
Total assets	47,468	45,188
Corporate, Non-Segment [Member]
Total assets	48,361	49,549
Intersegment Eliminations [Member]
Total assets	$ (56,119)	$ (55,808)