Note 12 - Non-Controlling Interest	9 Months Ended
Sep. 30, 2013
Noncontrolling Interest [Abstract]
Noncontrolling Interest Disclosure [Text Block]	Note 12. Non-Controlling Interest In May 2012, we formed a subsidiary for the purpose of marketing and selling medical products containing our technology, Clyra Medical Technology, Inc. (“Clyra”). Until December 17, 2012, this subsidiary was wholly owned, with 7,500 shares issued to BioLargo, Inc. On December 17, 2012, Clyra signed executive employment agreements with three individuals, in which each was granted 500 shares of Clyra common stock, one-third of which vested immediately, and the remaining over time. The shares granted to the three executives are restricted from transfer until a sale of the company, whether by means of a sale of its stock or substantially all of its assets, or otherwise by agreement of Clyra, BioLargo and the executives. Clyra has also raised $211,000 in net proceeds through issuing 215 shares of its common stock during the nine months ended September 30, 2013 (see Note 5, “Private Securities Offerings”). This represents 19.6% of the Company. For the nine-month period ended September 30, 2013, there have been no revenues and the financial impact of Clyra’s operations resulted in a net loss of $311,457.

- Definition

The entire disclosure for noncontrolling interest in consolidated subsidiaries, which could include the name of the subsidiary, the ownership percentage held by the parent, the ownership percentage held by the noncontrolling owners, the amount of the noncontrolling interest, the location of this amount on the balance sheet (when not reported separately), an explanation of the increase or decrease in the amount of the noncontrolling interest, the noncontrolling interest share of the net Income or Loss of the subsidiary, the location of this amount on the income statement (when not reported separately), the nature of the noncontrolling interest such as background information and terms, the amount of the noncontrolling interest represented by preferred stock, a description of the preferred stock, and the dividend requirements of the preferred stock.

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