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No authoritative reference available. false 5 Medical office building operating rent 2 nhp_MedicalOfficeBuildingOperatingRent nhp false credit duration The total amount of revenue recognized for the period from multi-tenant operating leases, including minimum lease revenue,... false false false false false false false false false false false totallabel false 1 false true false false 26868000 26868 false false false 2 false true false false 17588000 17588 false false false 3 false true false false 75677000 75677 false false false 4 false true false false 52111000 52111 false false false xbrli:monetaryItemType monetary The total amount of revenue recognized for the period from multi-tenant operating leases, including minimum lease revenue, contingent revenue, percentage revenue and sublease revenue. No authoritative reference available. true 6 Revenue from rents, total 2 us-gaap_OperatingLeasesIncomeStatementLeaseRevenue us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 106991000 106991 false false false 2 false true false false 90263000 90263 false false false 3 false true false false 305046000 305046 false false false 4 false true false false 270216000 270216 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 7 Interest and other income 2 nhp_InterestAndOtherIncome nhp false credit duration Interest earned on invested cash, including loans receivable, and various other miscellaneous revenue items. false false false false false false false false false false false totallabel false 1 false true false false 7054000 7054 false false false 2 false true false false 6748000 6748 false false false 3 false true false false 19905000 19905 false false false 4 false true false false 19741000 19741 false false false xbrli:monetaryItemType monetary Interest earned on invested cash, including loans receivable, and various other miscellaneous revenue items. No authoritative reference available. true 8 Revenue, total 2 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 114045000 114045 false false false 2 false true false false 97011000 97011 false false false 3 false true false false 324951000 324951 false false false 4 false true false false 289957000 289957 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 9 Expenses: 1 us-gaap_OperatingExpensesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel 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 10 Interest expense 2 us-gaap_InterestExpense us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 23782000 23782 false false false 2 false true false false 23221000 23221 false false false 3 false true false false 71824000 71824 false false false 4 false true false false 70540000 70540 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 11 Depreciation and amortization 2 us-gaap_DepreciationAndAmortization us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 36204000 36204 false false false 2 false true false false 30625000 30625 false false false 3 false true false false 101734000 101734 false false false 4 false true false false 91721000 91721 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 12 General and administrative 2 us-gaap_GeneralAndAdministrativeExpense us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 7902000 7902 false false false 2 false true false false 6514000 6514 false false false 3 false true false false 22262000 22262 false false false 4 false true false false 20404000 20404 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 13 Acquisition costs 2 us-gaap_BusinessCombinationAcquisitionRelatedCosts us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 35000 35 false false false 2 false false false false 0 0 false false false 3 false true false false 3104000 3104 false false false 4 false false false false 0 0 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 14 Medical office building operating expenses 2 us-gaap_CostOfRealEstateRevenue 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 11192000 11192 false false false 2 false true false false 7240000 7240 false false false 3 false true false false 30109000 30109 false false false 4 false true false false 21201000 21201 false false false xbrli:monetaryItemType monetary This element represents the total of the costs related to real estate revenues, including management, leasing, and development services. No authoritative reference available. true 15 Operating expenses, total 2 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 79115000 79115 false false false 2 false true false false 67600000 67600 false false false 3 false true false false 229033000 229033 false false false 4 false true false false 203866000 203866 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 16 Operating income 1 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 34930000 34930 false false false 2 false true false false 29411000 29411 false false false 3 false true false false 95918000 95918 false false false 4 false true false false 86091000 86091 false false false xbrli:monetaryItemType monetary Sum of operating profit and nonoperating income (expense) before income (loss) from equity method investments, income taxes, extraordinary items, cumulative effects of changes in accounting principles, and noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Subparagraph 1(i) -Article 4 false 17 Income from unconsolidated joint ventures 1 nhp_IncomeLossFromUnconsolidatedJointVentures nhp false credit duration This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as... false false false false false false false false false false false verboselabel false 1 false true false false 1379000 1379 false false false 2 false true false false 1513000 1513 false false false 3 false true false false 4055000 4055 false false false 4 false true false false 3700000 3700 false false false xbrli:monetaryItemType monetary This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. Such amount typically reflects adjustments similar to those made in preparing consolidated statements, including adjustments to eliminate intercompany gains and losses, and to amortize, if appropriate, any difference between cost and underlying equity in net assets of the investee at the date of investment. Also includes management fees received from such investees. No authoritative reference available. false 18 Gain on debt extinguishment 1 us-gaap_GainsLossesOnExtinguishmentOfDebt us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 75000 75 false false false 4 false true false false 4564000 4564 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 true 19 Income from continuing operations 1 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest 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 36309000 36309 false false false 2 false true false false 30924000 30924 false false false 3 false true false false 100048000 100048 false false false 4 false true false false 94355000 94355 false false false xbrli:monetaryItemType monetary This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses and taxes from ongoing operations before extraordinary items, cumulative effects of changes in accounting principles, and noncontrolling interest. 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 Research Bulletin (ARB) -Number 51 -Paragraph 29 true 20 Discontinued operations: 1 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel 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 21 Gains on sale of facilities, net 2 us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 2686000 2686 false false false 2 false false false false 0 0 false false false 3 false true false false 6487000 6487 false false false 4 false true false false 21152000 21152 false false false xbrli:monetaryItemType monetary Gain (loss) after tax expense (benefit), not previously recognized and resulting from the sale of a business component, which is recognized at the date of sale. A gain (loss) reflects the amount by which the consideration received exceeds (is exceeded by) the net carrying amount (reflecting previous provisions for loss on disposal, if any) of the disposal group. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 43 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 47 -Subparagraph b false 22 Income from discontinued operations 2 us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax 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 301000 301 false false false 2 false true false false 301000 301 false false false 3 false true false false 1023000 1023 false false false 4 false true false false 1177000 1177 false false false xbrli:monetaryItemType monetary After tax income (loss) from operations of a business component (exclusive of any gain or loss on disposal, or provision therefore) during the reporting period, until its disposal. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 43 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 47 -Subparagraph c true 23 Income from discontinued operations, total 2 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax 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 2987000 2987 false false false 2 false true false false 301000 301 false false false 3 false true false false 7510000 7510 false false false 4 false true false false 22329000 22329 false false false xbrli:monetaryItemType monetary This element represents the overall income (loss) from a disposal group that is classified as a component of the entity, net of income tax, reported as a separate component of income before extraordinary items and the cumulative effect of accounting changes before deduction or consideration of the amount which may be allocable to noncontrolling interests, if any. Includes the following (net of tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal. 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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) false 25 Net loss (income) attributable to noncontrolling interests 1 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest us-gaap true debit duration No definition available. false false false false false false false false false false true negatedtotal false 1 false true false false 558000 558 false false false 2 false true false false -82000 -82 false false false 3 false true false false 895000 895 false false false 4 false true false false -184000 -184 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 true 26 Net income attributable to NHP 1 us-gaap_NetIncomeLoss us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 39854000 39854 false false false 2 false true false false 31143000 31143 false false false 3 false true false false 108453000 108453 false false false 4 false true false false 116500000 116500 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 false 27 Preferred stock dividends 1 us-gaap_PreferredStockDividends us-gaap true debit duration No definition available. false false false false false false false false false false true negatedtotal false 1 false false false false 0 0 false false false 2 false true false false -1451000 -1451 false false false 3 false false false false 0 0 false false false 4 false true false false -4355000 -4355 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 true 28 Net income attributable to NHP common stockholders 1 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 39854000 39854 false false false 2 true true false false 29692000 29692 false false false 3 true true false false 108453000 108453 false false false 4 true true false false 112145000 112145 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 29 Basic earnings per share amounts: 1 us-gaap_EarningsPerShareBasicAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel 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 30 Income from continuing operations attributable to NHP common stockholders 2 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare us-gaap true na duration No definition available. false false false false false false false false false false false verboselabel true 1 true true false false 0.3 0.3 false false false 2 true true false false 0.27 0.27 false false false 3 true true false false 0.83 0.83 false false false 4 true true false false 0.86 0.86 false false false us-types:perShareItemType decimal The amount of income (loss) from continuing operations per each share of common stock outstanding during the reporting period. 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Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 8, 9, 10, 36, 37, 38 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 20 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 18 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 21 -Article 9 true 32 Net income attributable to NHP common stockholders 2 us-gaap_EarningsPerShareBasic us-gaap true na duration No definition available. false false false false false false false false false false false totallabel true 1 true true false false 0.32 0.32 false false false 2 true true false false 0.28 0.28 false false false 3 true true false false 0.89 0.89 false false false 4 true true false false 1.07 1.07 false false false us-types:perShareItemType decimal The amount of net income or loss for the period per each share of common stock outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 21 -Article 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 36, 37, 38 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 20 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 18 -Article 7 true 33 Basic weighted average shares outstanding 2 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic us-gaap true na duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 123721000 123721 false false false 2 false true false false 107175000 107175 false false false 3 false true false false 120242000 120242 false false false 4 false true false false 104224000 104224 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 true 34 Diluted earnings per share amounts: 1 us-gaap_EarningsPerShareDilutedAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel 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 35 Income from continuing operations attributable to NHP common stockholders 2 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare us-gaap true na duration No definition available. false false false false false false false false false false false verboselabel true 1 true true false false 0.29 0.29 false false false 2 true true false false 0.27 0.27 false false false 3 true true false false 0.81 0.81 false false false 4 true true false false 0.84 0.84 false false false us-types:perShareItemType decimal The amount of income (loss) from continuing operations available to each share of common stock outstanding during the reporting period and each share that would have been outstanding assuming the issuance of common shares for all dilutive potential common shares outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 21 -Article 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 11, 12, 36, 37, 38 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph a Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 20 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 18 -Article 7 false 36 Discontinued operations attributable to NHP common stockholders 2 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare us-gaap true na duration No definition available. false false false false false false false false false false false totallabel true 1 true true false false 0.02 0.02 false false false 2 false false false false 0 0 false false false 3 true true false false 0.06 0.06 false false false 4 true true false false 0.21 0.21 false false false us-types:perShareItemType decimal The amount of income (loss) from discontinued operations, net of related tax effect, per each diluted share of common stock outstanding during the reporting period. 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Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 11, 12, 36 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 20 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 18 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 21 -Article 9 true 38 Diluted weighted average shares outstanding 2 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding us-gaap true na duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 126497000 126497 false false false 2 false true false false 109477000 109477 false false false 3 false true false false 122878000 122878 false false false 4 false true false false 106389000 106389 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. 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