2.4.0.8040013 - Disclosure - Significant Accounting Policies - Income Taxes (Details)truefalsefalse1false falsefalseFROM_Jan01_2013_TO_Jun30_2013http://www.sec.gov/CIK0001275477duration2013-01-01T00:00:002013-06-30T00:00:00PercentageStandardhttp://www.xbrl.org/2003/instancepurexbrli01true 1bmnm_SignificantAccountingPoliciesAbstractbmnm_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Significant Accounting Policies [Abstract]2false 2us-gaap_OpenTaxYearus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse002010falsefalsefalsexbrli:gYearItemTypepositiveintegerTax year that remains open to examination under enacted tax laws, in CCYY format.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 false0Earliest Tax Year Open to Examination3false 2bmnm_IncomeRequiredToBeDistributedCommentarybmnm_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00REITs are generally not subject to federal income tax on their REIT taxable income provided that they distribute to their stockholders at least 90% of their REIT taxable income on an annual basis. In addition, a REIT must meet other provisions of the Code to retain its tax status.falsefalsefalsexbrli:stringItemTypestringNo authoritative reference available.No definition available.false0Discussion of the distribution requirements for REIT compliance4false 2bmnm_RequiredAnnualDistributionOfTaxableIncomebmnm_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.900.90falsefalsefalsenum:percentItemTypepureNo authoritative reference available.No definition available.false0Required Annual Distribution Of Taxable IncomefalseSignificant Accounting Policies - Income Taxes (Details)UnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.biminicapital.com/role/SignificantAccountingPoliciesIncomeTaxesDetails14