2.4.0.8017 - Disclosure - Summary of Significant Accounting Policies (Policies)truefalsefalse1false falsefalseContext_6ME__30-Jun-2013http://www.sec.gov/CIK0001503707duration2013-01-01T00:00:002013-06-30T00:00:001true 1us-gaap_AccountingPoliciesAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Accounting Policies [Abstract]2false 2us-gaap_BasisOfAccountingPolicyPolicyTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00Basis of Quarterly Presentation   The accompanying unaudited consolidated financial statements and related notes of the Company have been prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”) for interim financial reporting and the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, certain information and note disclosures normally included in the consolidated financial statements prepared under U.S. GAAP have been condensed or omitted. In the opinion of management, all adjustments considered necessary for a fair presentation of the Company’s financial position, results of operations and cash flows have been included and are of a normal and recurring nature. The operating results presented for interim periods are not necessarily indicative of the results that may be expected for any other interim period or for the entire year. These consolidated financial statements should be read in conjunction with the Company’s consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2012, which was filed with the SEC.falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for basis of accounting, or basis of presentation, used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS).No definition available.false0Basis of Quarterly Presentation3false 2us-gaap_ConsolidationPolicyTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00Principles of Consolidation   The consolidated financial statements include the accounts of the Company, the Operating Partnership and their consolidated subsidiaries, which are majority owned or otherwise controlled by the Company. There were no intercompany balances as of June 30, 2013 and December 31, 2012.falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy regarding (1) the principles it follows in consolidating or combining the separate financial statements, including the principles followed in determining the inclusion or exclusion of subsidiaries or other entities in the consolidated or combined financial statements and (2) its treatment of interests (for example, common stock, a partnership interest or other means of exerting influence) in other entities, for example consolidation or use of the equity or cost methods of accounting. The accounting policy may also address the accounting treatment for intercompany accounts and transactions, noncontrolling interest, and the income statement treatment in consolidation for issuances of stock by a subsidiary.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02, 03 -Article 3A Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2197480 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 40 -Section 45 -URI http://asc.fasb.org/section&trid=2197723 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2196966 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 325 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=2197087 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.3A-02) -URI http://asc.fasb.org/extlink&oid=27015204&loc=d3e355033-122828 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=16385135&loc=d3e33801-111570 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=18733093&loc=d3e5614-111684 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph k -Article 1 false0Principles of Consolidation4false 2us-gaap_UseOfEstimatesus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00Estimates   The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that could affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could materially differ from those estimates and assumptions.  falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for the use of estimates in the preparation of financial statements in conformity with generally accepted accounting principles.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6143-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6132-108592 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6061-108592 false0Estimates5false 2nshi_RealEstateDebtInvestmentsPolicyTextBlocknshi_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00Real Estate Debt Investments   Debt investments are generally intended to be held to maturity and, accordingly, are carried at cost, net of unamortized loan fees, premium, discount and unfunded commitments. Debt investments that are deemed to be impaired are carried at amortized cost less a loan loss reserve, if deemed appropriate, which approximates fair value.falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for real estate debt investments, which are generally intended to be held to maturity.No definition available.false0Real Estate Debt Investments6false 2nshi_RealEstateOwnedPolicyTextBlocknshi_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00Operating Real Estate   Operating real estate is accounted for at historical cost less accumulated depreciation. Costs directly related to an acquisition deemed to be a business combination are expensed. Ordinary repairs and maintenance are expensed as incurred. Major replacements and betterments which improve or extend the life of the asset are capitalized and depreciated over their useful life. Real estate is depreciated using the straight-line method over the estimated useful lives of the assets. The Company follows the purchase method for an acquisition of operating real estate, where the purchase price is allocated to tangibles such as land, building, tenant improvements and other identified intangibles.  falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy related to real estate owned.No definition available.false0Operating Real Estate7false 2us-gaap_MarketableSecuritiesAvailableForSaleSecuritiesPolicyus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00Real Estate Securities   The Company classifies its securities investments as available for sale on the acquisition date, which are carried at fair value. Unrealized gains (losses) are recorded as a component of accumulated other comprehensive income (loss) (“OCI”) in the consolidated statements of equity. However, the Company may elect the fair value option for certain of its available for sale securities, and as a result, any unrealized gains (losses) on such securities are recorded in unrealized gain (loss) on investments and other in the consolidated statements of operations.falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for investments in debt and equity securities that are classified as available-for-sale. This policy also may describe the entity's accounting treatment for transfers between investment categories, how the entity determines whether impairments of available-for-sale securities are other than temporary, and how the fair values of such securities are determined.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2196929 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section M Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 2, 12 -Article 5 false0Real Estate Securities8false 2us-gaap_RevenueRecognitionPolicyTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00Revenue Recognition   Real Estate Debt Investments   Interest income is recognized on an accrual basis and any related premium, discount, origination costs and fees are amortized over the life of the investment using the effective interest method. The amortization is reflected as an adjustment to interest income in the consolidated statements of operations. The amortization of a premium or accretion of a discount is discontinued if such loan is reclassified to held for sale.   Operating Real Estate   Rental and escalation income from operating real estate is derived from leasing of space to various healthcare operators.   The leases are generally for fixed terms of varying length and provide for annual rentals and expense reimbursements to be paid in monthly installments. Rental income from leases is recognized on a straight-line basis over the term of the respective leases. The excess of rents recognized over amounts contractually due pursuant to the underlying leases are included in unbilled rent receivable on the consolidated balance sheets. Escalation income represents revenue from operator leases which provide for the recovery of all or a portion of the operating expenses and real estate taxes paid by the Company on behalf of the respective property. This revenue is accrued in the same period as the expenses are incurred.   Resident fee revenue from healthcare properties utilizing a taxable REIT subsidiary structure is recorded when services are rendered and includes resident room and care charges and other resident charges.   Real Estate Securities   Interest income is recognized using the effective interest method with any premium or discount amortized or accreted through earnings based on expected cash flow through the expected maturity date of the security. Changes to expected cash flow may result in a change to the yield which is then applied retrospectively (for high-credit quality securities) or prospectively for all other securities to recognize interest income.falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for revenue recognition. If the entity has different policies for different types of revenue transactions, the policy for each material type of transaction is generally disclosed. If a sales transaction has multiple element arrangements (for example, delivery of multiple products, services or the rights to use assets) the disclosure may indicate the accounting policy for each unit of accounting as well as how units of accounting are determined and valued. The disclosure may encompass important judgment as to appropriateness of principles related to recognition of revenue. The disclosure also may indicate the entity's treatment of any unearned or deferred revenue that arises from the transaction.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18726-107790 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 13 -Section B -Paragraph Question 1 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 13.B.Q1) -URI http://asc.fasb.org/extlink&oid=27012821&loc=d3e214044-122780 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18823-107790 false0Revenue Recognition9false 2nshi_LoansAndLeasesReceivableAllowanceForLoanLossesAndImpairmentOnInvestmentsPolicyTextBlocknshi_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00Credit Losses and Impairment on Investments   Real Estate Debt Investments   Loans are considered impaired when based on current information and events it is probable that the Company will not be able to collect principal and interest amounts due according to the contractual terms. The Company assesses the credit quality of the portfolio and adequacy of loan loss reserves on a quarterly basis, or more frequently as necessary. Significant judgment of the Company is required in this analysis. The Company considers the estimated net recoverable value of the loan as well as other factors, including but not limited to the fair value of any collateral, the amount and the status of any senior debt, the quality and financial condition of the borrower and the competitive situation of the area where the underlying collateral is located. Because this determination is based on projections of future economic events, which are inherently subjective, the amount ultimately realized may differ materially from the carrying value as of the balance sheet date. If upon completion of the assessment, the estimated fair value of the underlying collateral is less than the net carrying value of the loan, a loan loss reserve is recorded with a corresponding charge to provision for loan losses. The loan loss reserve for each loan is maintained at a level that is determined to be adequate by management to absorb probable losses. As of June 30, 2013, the Company did not have any impaired real estate debt investments.   Income recognition is suspended for a loan at the earlier of the date at which payments become 90-days past due or when, in the opinion of the Company, a full recovery of income and principal becomes doubtful. When the ultimate collectability of the principal of an impaired loan is in doubt, all payments are applied to principal under the cost recovery method. When the ultimate collectability of the principal of an impaired loan is not in doubt, contractual interest is recorded as interest income when received, under the cash basis method until an accrual is resumed when the loan becomes contractually current and performance is demonstrated to be resumed. A loan is written off when it is no longer realizable and/or legally discharged.   Operating Real Estate   The Company’s real estate investments are reviewed on a quarterly basis, or more frequently as necessary, to assess whether there are any indicators that the value of the real estate may be impaired or that its carrying value may not be recoverable. A property's value is considered impaired if the Company’s estimate of the aggregate expected future undiscounted cash flows generated by the property is less than the carrying value. In conducting this review, the Company considers U.S. macroeconomic factors, real estate and healthcare sector conditions and asset specific and other factors. To the extent an impairment has occurred, the loss is measured as the excess of the carrying value of the property over the estimated fair value.   Allowances for doubtful accounts for operator/resident receivables are established based on a periodic review of aged receivables resulting from estimated losses due to the inability of operators/residents to make required rent and other payments contractually due. Additionally, the Company establishes, on a current basis, an allowance for future operator/resident credit losses on unbilled rent receivable based upon an evaluation of the collectability of such amounts.   <div style="font: 10pt/normal times new roman, times, serif; margin: 0pt; text-align: justify; font-size-adjust: none; font-stretch: normal;">Real Estate Securities</div>   Securities for which the fair value option is elected are not evaluated for other-than-temporary impairment (“OTTI”) as any change in fair value is recorded in the consolidated statements of operations. Realized losses on such securities are reclassified to realized gain (loss) on investments and other as losses occur.   Securities for which the fair value option is not elected are evaluated for OTTI quarterly. When the fair value of securities is less than its amortized cost, the security is considered impaired. If the Company either intends to sell an impaired security or it is more-likely-than-not that the Company will be required to sell an impaired security prior to its anticipated recovery, then the Company must recognize OTTI through a charge to the consolidated statements of operations equal to the difference between amortized cost and fair value at the measurement date. If the Company does not intend to sell an impaired security and it is not more-likely-than-not that it would be required to sell an impaired security prior to its recovery, then the Company must evaluate the security for any impairment. The portion of OTTI related to expected credit losses is recognized in the consolidated statements of operations. The remaining OTTI related to the valuation adjustment is recognized as a component of accumulated OCI in the consolidated statements of equity. The portion of OTTI recognized through earnings is accreted back to the amortized cost basis of the security through interest income, while amounts recognized through OCI are amortized over the life of the security with no impact on earnings.falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for credit losses and impairment on investments.No definition available.false0Credit Losses and Impairment on Investments10false 2nshi_OtherPolicyPolicyTextBlocknshi_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00Other   Refer to the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2012 for a complete discussion of the Company’s significant accounting policies.falsefalsefalsenonnum:textBlockItemTypenaRepresents other policy not seperately specified in taxonomy.No definition available.false0Other11false 2us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00Recent Accounting Pronouncements   In February 2013, the Financial Accounting Standards Board issued an accounting update to present the reclassification adjustments to OCI by component on the face of the statement of operations or in the notes to the consolidated financial statements. For other amounts that are not required under U.S. GAAP to be reclassified in their entirety into earnings, an entity is required to cross-reference to other disclosures required under U.S. GAAP to provide additional detail about those amounts. The Company adopted the provisions of the update and it did not have a material impact on the consolidated financial statements.falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy pertaining to new accounting pronouncements that may impact the entity's financial reporting. Includes, but is not limited to, quantification of the expected or actual impact.No definition available.false0Recent Accounting PronouncementsfalseSummary of Significant Accounting Policies (Policies)UnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.northstarreit.com/role/SummaryOfSignificantAccountingPoliciesPolicies111