Commitments and Contingencies	3 Months Ended
Aug. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure [Text Block]	Note 6: Commitments and Contingencies On June 18, 2009, the Company entered into an agreement to lease a building in Irvine, California. The lease commenced September 1, 2009 and ended August 31, 2016. The initial base rent was set at $18,490 per month with scheduled annual increases through the end of the lease term. The rent was $22,080. In November 2015, the Company signed the First Amendment to Lease to extend the lease until August 31, 2021. The initial base rent for the lease amendment which started September 1, 2016 is $21,000 per month. September 1, 2018 the rent increased to $22,279 per month. In November 2016, the Company’s Mexican subsidiary, Biomerica de Mexico, entered into a 10-year lease for approximately 8,100 square feet of manufacturing space with initial base rent of $2,926 per month. The Company has a one 10-year option to renew at the end of the initial lease period. Biomerica, Inc. is not a guarantor of such lease. Biomerica de Mexico also leases a smaller unit on a month-to-month basis for use in one manufacturing process. In addition, the Company leases a small office in Lindau, Germany, as headquarters for BioEurope GmbH, its Germany subsidiary. On December 1, 2017, Biomerica, Inc. (the “Company”) entered into an At Market Issuance Sales Agreement (the “At Market Issuance Sales Agreement”) with an agent (“Agent”), pursuant to which the Company may offer and sell from time to time up to an aggregate of $7,000,000 of shares of the Company’s common stock, par value $0.08 per share (the “Placement Shares”), through the Agent. The Placement Shares have been registered under the Securities Act of 1933, as amended (the “Securities Act”), pursuant to the Registration Statement on Form S-3 (File No. 333-219130) (the “Registration Statement”), which was originally filed with the Securities and Exchange Commission (“SEC”) on June 30, 2017 and declared effective by the SEC on July 20, 2017, the base prospectus contained within the Registration Statement, and a prospectus supplement that was filed with the SEC on December 1, 2017. Sales of the Placement Shares, if any, pursuant to the At Market Issuance Sales Agreement, may be made in sales deemed to be “at the market offerings” as defined in Rule 415 promulgated under the Securities Act. The Agent will act as sales agent and will use commercially reasonable efforts to sell on the Company’s behalf all of the Placement Shares requested to be sold by the Company, consistent with its normal trading and sales practices, on mutually agreed terms between the Agent and the Company. The Company has no obligation to sell any of the Placement Shares under the At Market Issuance Sales Agreement, and may at any time suspend offers under the At Market Issuance Sales Agreement or terminate the At Market Issuance Sales Agreement. The Company intends to use the net proceeds from this offering for general corporate purposes, including, without limitation, sales and marketing activities, clinical studies and product development, making acquisitions of assets, businesses, companies or securities, capital expenditures, and for working capital needs. During the quarter ended August 31, 2018 the Company sold 44,321 shares of common stock under the S-3 registration statement and received net proceeds of $170,443.

Note 6: Commitments and Contingencies

On June 18, 2009, the Company entered into an agreement to lease a building in Irvine, California. The lease commenced September 1, 2009 and ended August 31, 2016. The initial base rent was set at $18,490 per month with scheduled annual increases through the end of the lease term. The rent was $22,080. In November 2015, the Company signed the First Amendment to Lease to extend the lease until August 31, 2021. The initial base rent for the lease amendment which started September 1, 2016 is $21,000 per month. September 1, 2018 the rent increased to $22,279 per month.

In November 2016, the Company’s Mexican subsidiary, Biomerica de Mexico, entered into a 10-year lease for approximately 8,100 square feet of manufacturing space with initial base rent of $2,926 per month. The Company has a one 10-year option to renew at the end of the initial lease period. Biomerica, Inc. is not a guarantor of such lease. Biomerica de Mexico also leases a smaller unit on a month-to-month basis for use in one manufacturing process. In addition, the Company leases a small office in Lindau, Germany, as headquarters for BioEurope GmbH, its Germany subsidiary.

On December 1, 2017, Biomerica, Inc. (the “Company”) entered into an At Market Issuance Sales Agreement (the “At Market Issuance Sales Agreement”) with an agent (“Agent”), pursuant to which the Company may offer and sell from time to time up to an aggregate of $7,000,000 of shares of the Company’s common stock, par value $0.08 per share (the “Placement Shares”), through the Agent.

The Placement Shares have been registered under the Securities Act of 1933, as amended (the “Securities Act”), pursuant to the Registration Statement on Form S-3 (File No. 333-219130) (the “Registration Statement”), which was originally filed with the Securities and Exchange Commission (“SEC”) on June 30, 2017 and declared effective by the SEC on July 20, 2017, the base prospectus contained within the Registration Statement, and a prospectus supplement that was filed with the SEC on December 1, 2017.

Sales of the Placement Shares, if any, pursuant to the At Market Issuance Sales Agreement, may be made in sales deemed to be “at the market offerings” as defined in Rule 415 promulgated under the Securities Act. The Agent will act as sales agent and will use commercially reasonable efforts to sell on the Company’s behalf all of the Placement Shares requested to be sold by the Company, consistent with its normal trading and sales practices, on mutually agreed terms between the Agent and the Company.

The Company has no obligation to sell any of the Placement Shares under the At Market Issuance Sales Agreement, and may at any time suspend offers under the At Market Issuance Sales Agreement or terminate the At Market Issuance Sales Agreement. The Company intends to use the net proceeds from this offering for general corporate purposes, including, without limitation, sales and marketing activities, clinical studies and product development, making acquisitions of assets, businesses, companies or securities, capital expenditures, and for working capital needs.

During the quarter ended August 31, 2018 the Company sold 44,321 shares of common stock under the S-3 registration statement and received net proceeds of $170,443.