Note 6 - Subsidiaries and Joint Ventures with Noncontrolling Owners' Interests (Details Textual) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
CEO of RHB [Member] \| Upon Death [Member]
Business Acquisition, Percentage of Voting Interests Acquired	50.00%		50.00%
Myers [Member] \| Upon Death [Member]
Business Acquisition, Percentage of Voting Interests Acquired	50.00%		50.00%
Income (Loss) from Subsidiaries, before Tax	$ 3.4	$ 0.8	$ 7.3	$ 1.5

Percentage of voting equity interests acquired at the acquisition date in the business combination.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463

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Data Type:	num:percentItemType
Balance Type:	na
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