Note 4. Deferred Revenue	12 Months Ended
Dec. 31, 2011
Deferred Revenue Disclosure [Text Block]	Note 4. Deferred Revenue Sublicense to Isan USA On March 29, 2010, we entered into a sublicense agreement (the “Isan USA Sublicense”) with Isan USA, Inc. (“Isan USA”) which grants Isan USA the exclusive rights to use, exploit, develop and commercialize the Isan System Technology in the United States, in particular fields of use. Pursuant to the Isan USA Sublicense, Isan USA paid to BioLargo a $100,000 initial license fee plus additional payments of $23,000. Of the amounts received from Isan USA, $109,720 was considered deferred revenue. Isan USA was unable to secure financing, and ceased making the required monthly payments. Given the failure of Isan USA to secure financing, on August 12, 2011 we and Isan USA mutually agreed to terminate the Isan USA Sublicense. The remaining Isan USA deferred revenue balance of $109,720 was recorded as revenue during the year ended December 31, 2011. Horn Warehouse As of December 31, 2011, we had finished goods totaling $31,278 of product at our distribution partner, Horn (formerly the E.T. Horn Company). Horn warehouses our product and makes it available to us for later sales, and thus for revenue recognition purposes, the sale to Horn is deferred until such time as the product is sold to retailers and/or end-users. As of December 31, 2011, a balance of $52,509 relating to the sale of Odor-No-More product to Horn remains as deferred revenue.

Note 4. Deferred Revenue

12 Months Ended

Dec. 31, 2011

Deferred Revenue Disclosure [Text Block]

Note 4. Deferred Revenue

Sublicense to Isan USA

On March 29, 2010, we entered into a sublicense agreement (the “Isan USA Sublicense”) with Isan USA, Inc. (“Isan USA”) which grants Isan USA the exclusive rights to use, exploit, develop and commercialize the Isan System Technology in the United States, in particular fields of use. Pursuant to the Isan USA Sublicense, Isan USA paid to BioLargo a $100,000 initial license fee plus additional payments of $23,000. Of the amounts received from Isan USA, $109,720 was considered deferred revenue. Isan USA was unable to secure financing, and ceased making the required monthly payments. Given the failure of Isan USA to secure financing, on August 12, 2011 we and Isan USA mutually agreed to terminate the Isan USA Sublicense. The remaining Isan USA deferred revenue balance of $109,720 was recorded as revenue during the year ended December 31, 2011.

Horn Warehouse

As of December 31, 2011, we had finished goods totaling $31,278 of product at our distribution partner, Horn (formerly the E.T. Horn Company). Horn warehouses our product and makes it available to us for later sales, and thus for revenue recognition purposes, the sale to Horn is deferred until such time as the product is sold to retailers and/or end-users. As of December 31, 2011, a balance of $52,509 relating to the sale of Odor-No-More product to Horn remains as deferred revenue.

- Definition

The entire disclosure for deferred revenues at the end of the reporting period, and description and amounts of significant changes that occurred during the reporting period. Deferred revenue is a liability as of the balance sheet date related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

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