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COMMITMENTS AND CONTINGENCIES (Details) (USD $) | 12 Months Ended
--- | ---
May 31, 2014 | May 31, 2013
COMMITMENTS AND CONTINGENCIES (Details) [Line Items] |  |
Operating Lease Initiation Date | Sep. 01, 2009 |
Lease Expiration Date | Aug. 31, 2016 |
Operating Leases, Rent Expense, Contingent Rentals | $ 22,080 |
Security Deposit Liability | 22,080 |
Operating Leases, Rent Expense | 234,960 | 234,960
Operating Leases, Rent Expense, Net | 234,960 | 210,935
Operating Leases, Rent Expense, Sublease Rentals | 0 | 24,025
Amortization of Intangible Assets | 29,515 | 29,383
Assets Purchase Agreement [Member] |  |
COMMITMENTS AND CONTINGENCIES (Details) [Line Items] |  |
Asset Purchase Agreement, Initiation Date | Mar. 27, 2009 |
Royalty Expense Percentage of Sales | 10.00% |
Royalty Expense | 600 | 300
Cross License Agreement To Acquire Technology And Intellectual Property [Member] |  |
COMMITMENTS AND CONTINGENCIES (Details) [Line Items] |  |
Payment for Licenses | 25,000 |
Amortization of Intangible Assets | 15,000 | 15,000
Cross License Agreement To Acquire Technology And Intellectual Property [Member] | Minimum [Member] |  |
COMMITMENTS AND CONTINGENCIES (Details) [Line Items] |  |
Royalty Expense Percentage of Sales | 4.00% |
Cross License Agreement To Acquire Technology And Intellectual Property [Member] | Maximum [Member] |  |
COMMITMENTS AND CONTINGENCIES (Details) [Line Items] |  |
Royalty Expense Percentage of Sales |  | 8.00%
Perpetual License [Member] |  |
COMMITMENTS AND CONTINGENCIES (Details) [Line Items] |  |
Royalty Expense | 8,300 | 24,000
Payments for Legal Settlements | 25,000 |
License Cost Amortization, Period | 10 years |
Amortization of License Costs | 10,000 |
Perpetual License [Member] | Minimum [Member] |  |
COMMITMENTS AND CONTINGENCIES (Details) [Line Items] |  |
Royalty Expense Percentage of Sales | 4.00% |
Perpetual License [Member] | Maximum [Member] |  |
COMMITMENTS AND CONTINGENCIES (Details) [Line Items] |  |
Royalty Expense Percentage of Sales | 8.00% |
Agreement With University [Member] |  |
COMMITMENTS AND CONTINGENCIES (Details) [Line Items] |  |
Royalty Expense | 6,900 | 7,000
License Issuance Cost | 15,000 |
Two Royalty Agreement [Member] |  |
COMMITMENTS AND CONTINGENCIES (Details) [Line Items] |  |
Royalty Expense Percentage of Sales | 3.00% | 2.90%
Royalty Expense | 21,000 | 26,000
Operating Lease Rental [Member] |  |
COMMITMENTS AND CONTINGENCIES (Details) [Line Items] |  |
Operating Leases, Rent Expense, Minimum Rentals | 18,490 |
Mexico [Member] |  |
COMMITMENTS AND CONTINGENCIES (Details) [Line Items] |  |
Operating Leases, Rent Expense | $ 33,385 | $ 33,744

X
- Definition Amount of amortization of license cost. + References No definition available. + Details
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Namespace Prefix: | bmra_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Date the asset purchase agreement was signed, in CCYY-MM-DD format. + References No definition available. + Details
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Namespace Prefix: | bmra_
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Balance Type: | na
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- Details
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Balance Type: | na
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- Definition License Cost Amortization Period. + References No definition available. + Details
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Namespace Prefix: | bmra_
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Balance Type: | na
Period Type: | duration

X
- Definition Amount of license issuance cost. + References No definition available. + Details
Name: | bmra_LicenseIssuanceCost
Namespace Prefix: | bmra_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Date the operating lease was initiated, in CCYY-MM-DD format. + References No definition available. + Details
Name: | bmra_OperatingLeaseInitiationDate
Namespace Prefix: | bmra_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Cash payment for license. + References No definition available. + Details
Name: | bmra_PaymentForLicense
Namespace Prefix: | bmra_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Royalty expenses expressed as a percentage of sales. + References No definition available. + Details
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Namespace Prefix: | bmra_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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Balance Type: | debit
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X
- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References No definition available. + Details
Name: | us-gaap_LeaseAndRentalExpense
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Balance Type: | debit
Period Type: | duration

X
- Definition Date which lease or group of leases is set to expire, in CCYY-MM-DD format. + References No definition available. + Details
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- Definition The increases or decreases in lease payments that result from changes occurring after the inception of the lease in the factors (other than the passage of time) on which lease payments are based, except that any escalation of minimum lease payments relating to increases in construction or acquisition cost of the leased property or for increases in some measure of cost or value during the construction or preconstruction period, are excluded from contingent rentals. Contingent rentals also may include amounts for which the triggering events have not yet occurred or the specified targets for which have not yet been achieved (such as sales based percentage rent), but which events are considered probable of occurring or which specified targets are considered probable of being achieved. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Contingent Rentals -URI http://asc.fasb.org/extlink&oid=6508509 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6452660&loc=d3e36991-112694 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 3) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 40 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6452616&loc=d3e36728-112689 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 25 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=7579899&loc=d3e35050-112683 + Details
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Balance Type: | debit
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X
- Definition This element represents the payments that the lessee is obligated to make or can be required to make in connection with a property under the terms of an agreement classified as an operating lease, excluding contingent rentals and a guarantee by the lessee of the lessor's debt and the lessee's obligation to pay (apart from the rental payments) executory costs such as insurance, maintenance, and taxes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 3) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 25 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=7661868&loc=d3e34039-112682 + Details
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- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 + Details
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Balance Type: | debit
Period Type: | duration

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- Definition The total amount of sublease rental income recognized during the period that reduces the entity's rent expense incurred under operating leases. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 3) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition The amount of cash paid for the settlement of litigation or for other legal issues during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Amount of expense related to royalty payments under a contractual arrangement such as payment for mineral and drilling rights and use of technology or intellectual property. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
Name: | us-gaap_RoyaltyExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition This element represents money paid in advance to protect the provider of a product or service, such as a lessor, against damage or nonpayment by the buyer or tenant (lessee) during the term of the agreement. Such damages may include physical damage to the property, theft of property, and other contractual breaches. Security deposits held may be interest or noninterest bearing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.15(a)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | credit
Period Type: | instant