Note 7 - Inventories - Fair Value of Impaired Inventory (Details) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Sep. 30, 2016
Minimum [Member]
Quantitative Data; Discount Rate	15.00%	12.00%		12.00%			5.00%
Maximum [Member]
Quantitative Data; Discount Rate	18.00%	15.00%		15.00%			12.00%
Impairment Data; Total Subdivisions Tested	25	17	14	18	22	22
Impairment Data; Inventory Impairments	$ 4,700	$ 1,600		$ 3,225		$ 350
Impairment Data; Fair Value of Inventory After Impairments	$ 12,295	$ 6,415		$ 14,836		$ 3,701
Impairment Data; Number of Subdivisions Impaired	2	2		5		1
Quantitative Data; Discount Rate						8.70%

The fair value of the inventories after determining the inventory impairments during period.

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The total number of subdivisions impaired.

+ References

No definition available.

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The total number of subdivision been tested during inventory impairment process.

+ References

No definition available.

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- Definition

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.

+ References

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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Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=66092785&loc=d3e4542-108314

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-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
-Paragraph 2
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