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Subsequent Events (Details)	Oct. 12, 2017
Subsequent Event [Member]
Subsequent Events (Details) [Line Items]
Agreement Term Period	3 years

X

- Definition

Term of the agreement.

+ References

No definition available.

+ Details

Name:	bmra_AgreementTermPeriod
Namespace Prefix:	bmra_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	bmra_SubsequentEventsDetailsLineItems
Namespace Prefix:	bmra_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: