Note 11 - Disclosures About Fair Value (Details Textual) $ in Millions	12 Months Ended
Dec. 31, 2016 USD ($)
Fair Value Inputs, Average Selling Price of Homes	$ 0.4
Minimum [Member]
Fair Value Inputs, Discount Rate	5.00%
Maximum [Member]
Fair Value Inputs, Discount Rate	12.00%

Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration