For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 18

-URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6404-108592

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 21

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13537-108611

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Note 9 - Business Segment Information (Details Textual) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Golf And Related Operations [Member]
Deferred Revenue, Current	$ 3,200		$ 2,300
Increase (Decrease) in Operating Assets	5,700
Waste Management Services [Member] \| Sales Revenue, Segment [Member] \| Customer Concentration Risk [Member] \| One Customer Member
Concentration Risk, Percentage		11.30%
Waste Management Services [Member]
Increase (Decrease) in Operating Assets	1,600
Sales Revenue, Segment [Member] \| Customer Concentration Risk [Member] \| One Customer Member
Concentration Risk, Percentage		8.50%
Deferred Revenue, Current	$ 3,152		$ 2,256