Note 13 - Quarterly Financial Information (Unaudited) (Details) - Quarterly Financial Information (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Note 13 - Quarterly Financial Information (Unaudited) (Details) - Quarterly Financial Information [Line Items]
Revenues	$ 301	$ 362	$ 1,019
Operating loss	(13,972)	(13,068)	(11,234)
Net loss applicable to common stock	(22,677)	(19,574)	(16,837)
Basic and diluted net loss per common share (in Dollars per share)	$ (1.46)	$ (1.27)	$ (1.20)
Quarter Ended March 31 [Member]
Note 13 - Quarterly Financial Information (Unaudited) (Details) - Quarterly Financial Information [Line Items]
Revenues	4	31
Gross profit	4	31
Operating loss	(3,944)	(2,885)
Net loss applicable to common stock	(7,439)	(4,448)
Basic and diluted net loss per common share (in Dollars per share)	$ (0.48)	$ (0.29)
Quarter Ended June 30 [Member]
Note 13 - Quarterly Financial Information (Unaudited) (Details) - Quarterly Financial Information [Line Items]
Revenues	4	6
Gross profit	4	4
Operating loss	(2,871)	(2,986)
Net loss applicable to common stock	(4,461)	(4,584)
Basic and diluted net loss per common share (in Dollars per share)	$ (0.29)	$ (0.30)
Quarter Ended September 30 [Member]
Note 13 - Quarterly Financial Information (Unaudited) (Details) - Quarterly Financial Information [Line Items]
Revenues	182	287
Gross profit	(110)	(6)
Operating loss	(3,107)	(3,068)
Net loss applicable to common stock	(4,797)	(4,736)
Basic and diluted net loss per common share (in Dollars per share)	$ (0.31)	$ (0.31)
Quarter Ended December 31 [Member]
Note 13 - Quarterly Financial Information (Unaudited) (Details) - Quarterly Financial Information [Line Items]
Revenues	111	381
Gross profit	(152)	(188)
Operating loss	(4,050)	(4,129)
Net loss applicable to common stock	$ (5,980)	$ (5,806)
Basic and diluted net loss per common share (in Dollars per share)	$ (0.38)	$ (0.38)

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The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References

No definition available.

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- Definition

Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

+ References

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- Definition

Net Income or Loss Available to Common Stockholders plus adjustments resulting from the assumption that dilutive convertible securities were converted, options or warrants were exercised, or that other shares were issued upon the satisfaction of certain conditions.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 45

-Paragraph 16

-URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1505-109256

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 45

-Paragraph 11

-URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1377-109256

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The net result for the period of deducting operating expenses from operating revenues.

+ References

No definition available.

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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