2.2.0.7 false CONSOLIDATED STATEMENTS OF INCOME (USD $) 00200 - Statement - CONSOLIDATED STATEMENTS OF INCOME true false In Thousands, except Share data false false 1 USD false false Unit1 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Unit12 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Unit13 Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ false 2 USD false false Unit1 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Unit12 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Unit13 Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ false 3 USD false false Unit1 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Unit12 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Unit13 Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ false 4 USD false false Unit1 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Unit12 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Unit13 Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ 13 Revenues: 11 us-gaap_RevenuesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 14 Rental 12 us-gaap_OperatingLeasesIncomeStatementLeaseRevenue us-gaap true credit duration No definition available. false false false false false false false false false false false false 1 true true false false 72971000 72971 false false false 2 true true false false 68472000 68472 false false false 3 true true false false 215950000 215950 false false false 4 true true false false 202608000 202608 false false false xbrli:monetaryItemType monetary The total amount of revenue recognized for the period from operating leases, including minimum lease revenue, contingent revenue, percentage revenue and sublease revenue. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 19 -Subparagraph b false 15 Tenant recoveries 12 us-gaap_TenantReimbursements us-gaap true credit duration No definition available. false false false false false false false false false false false false 1 false true false false 22723000 22723 false false false 2 false true false false 19240000 19240 false false false 3 false true false false 63823000 63823 false false false 4 false true false false 57510000 57510 false false false xbrli:monetaryItemType monetary In accordance with the provisions of their lease agreement, this element represents allowable charges due a landlord from its tenant. In retail store and office building leases, for example, tenant reimbursements may cover items such as taxes, utilities, and common area expenses. No authoritative reference available. false 16 Other income 12 us-gaap_OtherRealEstateRevenue us-gaap true credit duration No definition available. false false false false false false false false false false false terselabel false 1 false true false false 39000 39 false false false 2 false true false false 5251000 5251 false false false 3 false true false false 1628000 1628 false false false 4 false true false false 12876000 12876 false false false xbrli:monetaryItemType monetary Other real estate revenue not otherwise specified in the taxonomy. No authoritative reference available. false 17 Total revenues 12 us-gaap_Revenues us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 95733000 95733 false false false 2 false true false false 92963000 92963 false false false 3 false true false false 281401000 281401 false false false 4 false true false false 272994000 272994 false false false xbrli:monetaryItemType monetary Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 true 18 Expenses: 10 us-gaap_OperatingExpensesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 19 Rental operations 11 us-gaap_OwnedPropertyManagementCosts us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false 19998000 19998 false false false 2 false true false false 18726000 18726 false false false 3 false true false false 54926000 54926 false false false 4 false true false false 55539000 55539 false false false xbrli:monetaryItemType monetary The aggregate costs related to management of owned properties during the reporting period. No authoritative reference available. false 20 Real estate taxes 11 us-gaap_RealEstateTaxExpense us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false 9408000 9408 false false false 2 false true false false 8233000 8233 false false false 3 false true false false 26832000 26832 false false false 4 false true false false 23079000 23079 false false false xbrli:monetaryItemType monetary A tax based on the assessed value of real estate by the local government. The tax is usually based on the value of property (including the land). Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Chapter 10 -Section A -Paragraph 2, 17 false 21 Depreciation and amortization 11 us-gaap_DepreciationAndAmortization us-gaap true debit duration No definition available. false false false false false false false false false false false terselabel false 1 false true false false 27774000 27774 false false false 2 false true false false 30953000 30953 false false false 3 false true false false 83159000 83159 false false false 4 false true false false 82767000 82767 false false false xbrli:monetaryItemType monetary The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 false 22 General and administrative 11 us-gaap_GeneralAndAdministrativeExpense us-gaap true debit duration No definition available. false false false false false false false false false false false label false 1 false true false false 6805000 6805 false false false 2 false true false false 5712000 5712 false false false 3 false true false false 19523000 19523 false false false 4 false true false false 16119000 16119 false false false xbrli:monetaryItemType monetary The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. No authoritative reference available. false 23 Acquisition related expenses 11 us-gaap_BusinessCombinationAcquisitionRelatedCosts us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false 420000 420 false false false 2 false true false false 244000 244 false false false 3 false true false false 2388000 2388 false false false 4 false true false false 244000 244 false false false xbrli:monetaryItemType monetary This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 59 false 24 Total expenses 11 us-gaap_OperatingExpenses us-gaap true debit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 64405000 64405 false false false 2 false true false false 63868000 63868 false false false 3 false true false false 186828000 186828 false false false 4 false true false false 177748000 177748 false false false xbrli:monetaryItemType monetary Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense. No authoritative reference available. true 25 Income from operations 11 us-gaap_OperatingIncomeLoss us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 31328000 31328 false false false 2 false true false false 29095000 29095 false false false 3 false true false false 94573000 94573 false false false 4 false true false false 95246000 95246 false false false xbrli:monetaryItemType monetary The net result for the period of deducting operating expenses from operating revenues. No authoritative reference available. true 26 Equity in net loss of unconsolidated partnerships 11 us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions us-gaap true credit duration No definition available. false false false false false false false false false false false terselabel false 1 false true false false -308000 -308 false false false 2 false true false false -1118000 -1118 false false false 3 false true false false -686000 -686 false false false 4 false true false false -1884000 -1884 false false false xbrli:monetaryItemType monetary This element represents the undistributed income (or loss) of equity method investments, net of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporations; such investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 27 Interest income 11 us-gaap_InvestmentIncomeInterest us-gaap true credit duration No definition available. false false false false false false false false false false false false 1 false true false false 55000 55 false false false 2 false true false false 62000 62 false false false 3 false true false false 126000 126 false false false 4 false true false false 226000 226 false false false xbrli:monetaryItemType monetary Income derived from investments in debt securities and on cash and cash equivalents the earnings of which reflect the time value of money or transactions in which the payments are for the use or forbearance of money. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 14 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Article 5 false 28 Interest expense 11 us-gaap_InterestExpense us-gaap true debit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -21589000 -21589 false false false 2 false true false false -19614000 -19614 false false false 3 false true false false -64719000 -64719 false false false 4 false true false false -44567000 -44567 false false false xbrli:monetaryItemType monetary The cost of borrowed funds accounted for as interest that was charged against earnings during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 34 -Paragraph 21 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher OTS -Name Federal Regulation (FR) -Number Title 12 -Chapter V -Section 563c.102 -Paragraph 9 -Subsection II Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 9 -Article 9 false 29 (Loss)/gain on derivative instruments 11 us-gaap_GainLossOnDerivativeInstrumentsNetPretax us-gaap true credit duration No definition available. false false false false false false false false false false false terselabel false 1 false true false false -287000 -287 false false false 2 false true false false -14000 -14 false false false 3 false true false false -634000 -634 false false false 4 false true false false 289000 289 false false false xbrli:monetaryItemType monetary Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects. No authoritative reference available. false 30 (Loss)/gain on extinguishment of debt 11 us-gaap_GainsLossesOnExtinguishmentOfDebt us-gaap true credit duration No definition available. false false false false false false false false false false false label false 1 false true false false -22000 -22 false false false 2 false false false false 0 0 false false false 3 false true false false -2286000 -2286 false false false 4 false true false false 6152000 6152 false false false xbrli:monetaryItemType monetary Amount represents the difference between the fair value of the payments made and the carrying amount of the debt at the time of its extinguishment. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 26 -Paragraph 20, 21 false 31 Net income 11 us-gaap_ProfitLoss us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 9177000 9177 false false false 2 false true false false 8411000 8411 false false false 3 false true false false 26374000 26374 false false false 4 false true false false 55462000 55462 false false false xbrli:monetaryItemType monetary The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A1, A4, A5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 5 -Subparagraph b Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 29 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(1) true 32 Net income attributable to noncontrolling interests 11 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest us-gaap true debit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -104000 -104 false false false 2 false true false false -108000 -108 false false false 3 false true false false -321000 -321 false false false 4 false true false false -1458000 -1458 false false false xbrli:monetaryItemType monetary The portion of net income (loss) attributable to the noncontrolling interest (if any) deducted in order to derive the portion attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(1) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A1, A4, A5 false 33 Net income attributable to Company 11 us-gaap_NetIncomeLoss us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 9073000 9073 false false false 2 false true false false 8303000 8303 false false false 3 false true false false 26053000 26053 false false false 4 false true false false 54004000 54004 false false false xbrli:monetaryItemType monetary The portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph d Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A7 -Appendix A Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 20 -Article 9 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 10, 15 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 87-21 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28, 29, 30 true 34 Preferred stock dividends 11 us-gaap_PreferredStockDividends us-gaap true debit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -4241000 -4241 false false false 2 false true false false -4241000 -4241 false false false 3 false true false false -12722000 -12722 false false false 4 false true false false -12722000 -12722 false false false xbrli:monetaryItemType monetary The amount of dividends declared or paid in the period to preferred shareholders, or the amount for which the obligation to pay them dividends arose in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section B Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph b false 35 Net income available to common stockholders 11 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 true true false false 4832000 4832 false false false 2 true true false false 4062000 4062 false false false 3 true true false false 13331000 13331 false false false 4 true true false false 41282000 41282 false false false xbrli:monetaryItemType monetary Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period). Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 9 true 36 Net income per share available to common stockholders: 1 bmr_EarningsPerShareBasicAndDilutedAbstract bmr false na duration Earnings Per Share Basic And Diluted Abstract false false false false false true false false false false false label false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string Earnings Per Share Basic And Diluted Abstract false 37 Basic and diluted earnings per share 2 bmr_BasicAndDilutedEarningsPerShare bmr false na duration Basic and diluted earnings per share false false false false false false false false false false false label true 1 true true false false 0.04 0.04 false false false 2 true true false false 0.04 0.04 false false false 3 true true false false 0.12 0.12 false false false 4 true true false false 0.46 0.46 false false false xbrli:decimalItemType decimal Basic and diluted earnings per share No authoritative reference available. false 38 Weighted-average common shares outstanding: 1 bmr_WeightedAverageCommonSharesOutstanding bmr false na duration Weighted-average common shares outstanding: false false false false false true false false false false false label false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string Weighted-average common shares outstanding: false 39 Basic 2 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic us-gaap true na duration No definition available. false false false false false false false false false false false false 1 false true false false 112910694 112910694 false false false 2 false true false false 97315601 97315601 false false false 3 false true false false 107003096 107003096 false false false 4 false true false false 88754885 88754885 false false false xbrli:sharesItemType shares Number of [basic] shares, after adjustment for contingently issuable shares and other shares not deemed outstanding, determined by relating the portion of time within a reporting period that common shares have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 171 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph a Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 8 false 40 Diluted 2 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding us-gaap true na duration No definition available. false false false false false false false false false false false false 1 false true false false 115911944 115911944 false false false 2 false true false false 101289458 101289458 false false false 3 false true false false 110028740 110028740 false false false 4 false true false false 92863088 92863088 false false false xbrli:sharesItemType shares The average number of shares issued and outstanding that are used in calculating diluted EPS, determined based on the timing of issuance of shares in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph a Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 8 false 4 28 false Thousands NoRounding NoRounding false true