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Note 10 - Business Segment Information (Details Textual) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Golf And Related Operations [Member]
Deferred Revenue, Current	$ 3,700		$ 2,400
Increase (Decrease) in Operating Assets	2,200
Waste Management Services [Member]
Increase (Decrease) in Operating Assets	$ 500
Customer Concentration Risk [Member] \| Sales Revenue, Segment [Member]
Concentration Risk, Percentage	0.00%	0.00%
Deferred Revenue, Current	$ 3,697		$ 2,401

The carrying amount of consideration received or receivable as of the balance sheet date on potential earnings that were not recognized as revenue in conformity with GAAP, and which are expected to be recognized as such within one year or the normal operating cycle, if longer, including sales, license fees, and royalties, but excluding interest income.

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