Note 15 - Employee Equity Incentive Plans (Details) - Weighted Average Grant Date Fair Value Activity (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Weighted Average Grant Date Fair Value Activity [Abstract]
Stock options granted during the year ended December 31,	$ 0.16	$ 0.17
Stock options vested during the year ended December 31,	$ 0.12	$ 0.11
Stock options forfeited during the year ended December 31,	$ 0.31	$ 0.29

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (d)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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