XML 52 R40.htm IDEA: XBRL DOCUMENT
v3.10.0.1

BUSINESS SEGMENTS (Details) - Geographic information regarding net sales - USD ($) | 12 Months Ended
--- | ---
May 31, 2018 | May 31, 2017
Net sales: |  |
Net Sales | $ 5,564,185 | $ 5,791,670
Europe [Member] |  |
Net sales: |  |
Net Sales | 2,023,000 | 2,238,000
UNITED STATES |  |
Net sales: |  |
Net Sales | 685,000 | 874,000
Asia [Member] |  |
Net sales: |  |
Net Sales | 2,506,000 | 2,412,000
South America [Member] |  |
Net sales: |  |
Net Sales | 214,000 | 65,000
Middle East [Member] |  |
Net sales: |  |
Net Sales | 132,000 | 186,000
Other Foreign [Member] |  |
Net sales: |  |
Net Sales | $ 4,000 | $ 17,000

X
- References No definition available. + Details
Name: | bmra_NetSalesAbstract
Namespace Prefix: | bmra_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 + Details
Name: | us-gaap_Revenues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | srt_StatementGeographicalAxis=srt_EuropeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=country_US
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=srt_AsiaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=srt_SouthAmericaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=us-gaap_MiddleEastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=bmra_OtherForeignMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |