Note 13 - Business Segment Information - Identifiable Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Total assets	$ 68,145	$ 65,378
Operating Segments [Member]
Total assets	124,377	121,186
Operating Segments [Member] | Waste Management Services [Member]
Total assets	29,290	26,449
Operating Segments [Member] | Golf and Related Operations [Member]
Total assets	47,819	45,188
Corporate, Non-Segment [Member]
Total assets	47,268	49,549
Intersegment Eliminations [Member]
Total assets	$ (56,232)	$ (55,808)