Committments - Legal Contingencies Narrative (Details) (USD $)	3 Months Ended
Mar. 31, 2015
LossContingencySettlementAgreementDate	13-May-15
LitigationSettlementAmount	$ 3,500,000us-gaap_LitigationSettlementAmount
Litigation Settlement Expense	3,500,000us-gaap_LitigationSettlementExpense
Bimini Capital Management Inc [Member]
LossContingencySettlementAgreementDate	5/13/2015
LitigationSettlementAmount	3,500,000
Loss Contingency, Name of Plaintiff	Hildene Capital
Loss Contingency, Domicile of Litigation	New York
Loss Contingency, Lawsuit Filing Date	7/16/2010
Bimini Capital Management Inc [Member] \| Effective Date [Member]
LitigationSettlementAmount	2,250,000
Litigation Settlement Expense	2,250,000
Bimini Capital Management Inc [Member] \| 180 Days After Effective Date
LitigationSettlementAmount	250,000
Litigation Settlement Expense	250,000
Bimini Capital Management Inc [Member] \| Due on First, Second, Third and Fourth Anniversaries
LitigationSettlementAmount	250,000
Litigation Settlement Expense	$ 250,000

Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

No definition available.

Name:	us-gaap_LitigationSettlementAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees.

+ References

No definition available.

+ Details

Name:	us-gaap_LitigationSettlementExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Identifies the domicile or jurisdiction of the court of law, arbitration or mediation proceeding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 9

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349

+ Details

Name:	us-gaap_LossContingencyDomicileOfLitigation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

States the date the complaint was formally filed in a court of law, in arbitration or mediation.

+ References

+ Details

Name:	us-gaap_LossContingencyLawsuitFilingDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Identifies the plaintiff in the lawsuit.

+ References

+ Details

Name:	us-gaap_LossContingencyNameOfPlaintiff
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The effective date of a duly executed litigation settlement agreement.

+ References

+ Details

Name:	us-gaap_LossContingencySettlementAgreementDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	dei_LegalEntityAxis=bmnm_BiminiCapitalManagementIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: