Note 2 - Summary of Significant Accounting Policies (Details) (USD $)

9 Months Ended

Sep. 30, 2013

Sep. 30, 2012

Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]

Depreciation (in Dollars)

$ 0

$ 1,958

Amortization of Intangible Assets (in Dollars)

8,190

0

Reclassification, Policy [Policy Text Block]

Reclassification of Expense

Certain expenses have been reclassified from selling, general and administrative expense into research and development expenses. Management believes that this reclassification is necessary as these expenses relate to further development of the BioLargo technology into the wound care and water treatment industries and have recently become significant.

Selling, General and Administrative Expense [Member] | 2007 Plan [Member]

Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]

Allocated Share-based Compensation Expense (in Dollars)

25,200

1,382,475

Selling, General and Administrative Expense [Member]

Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]

Allocated Share-based Compensation Expense (in Dollars)

$ 123,500

$ 388,432