New Accounting Pronouncement (Notes)	9 Months Ended
Sep. 30, 2016
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
New Accounting Pronouncements, Policy [Policy Text Block]	New Accounting Pronouncements Revenue Recognition In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2014-09, Revenue from Contracts with Customers ("ASU 2014-09"). ASU 2014-09 is a comprehensive revenue recognition standard that will supersede nearly all existing GAAP revenue recognition guidance as well as impact the existing GAAP guidance governing the sale of nonfinancial assets. The standard’s core principle is that a company will recognize revenue when it satisfies performance obligations, by transferring promised goods or services to customers, in an amount that reflects the consideration to which an entity expects to be entitled in exchange for fulfilling those performance obligations. ASU 2014-09 will be effective for public entities for annual and interim reporting periods beginning after December 15, 2017 and early adoption is permitted in periods ending after December 15, 2016. ASU 2014-09 allows for either full or modified retrospective adoption. We have begun to evaluate each of our revenue streams under the new standard and the pattern of recognition is not expected to change significantly. Additionally, we have primarily disposed of property and land in all cash transactions with no contingencies and no future involvement in the operations, and therefore, do not expect the new standard to significantly impact the recognition of property and land sales. We have not yet selected a transition method. Consolidation In February 2015, the FASB issued ASU 2015-02, Amendments to the Consolidation Analysis ("ASU 2015-02"). ASU 2015-02 made targeted amendments to the current consolidation guidance and ended the deferral granted to investment companies from applying the existing variable interest entity ("VIE") guidance. ASU 2015-02 was effective for public entities for annual and interim reporting periods beginning after December 15, 2015. We adopted ASU 2015-02 during the three months ended March 31, 2016, and it has not had a significant impact on our consolidated financial statements. Debt Issuance Costs In April 2015, the FASB issued ASU 2015-03, Simplifying the Presentation of Debt Issuance Costs ("ASU 2015-03"). ASU 2015-03 required that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability. ASU 2015-03 was effective for us retrospectively for financial statements issued for annual and interim reporting periods beginning after December 15, 2015. We adopted ASU 2015-03 during the three months ended March 31, 2016. Debt issuance costs related to the Partnership's unsecured line of credit continue to be presented as assets in the consolidated balance sheets, as part of escrow deposits and other assets, pursuant to ASU 2015-15, Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements. Business Combinations In September 2015, the FASB issued ASU 2015-16, Business Combinations - Simplifying the Accounting for Measurement-Period Adjustments ("ASU 2015-16"). ASU 2015-16 amended the retroactive requirement to apply adjustments made to provisional amounts recognized in a business combination. The update required that the acquirer record, in the same period’s financial statements, the effect on earnings of changes in depreciation, amortization, or other income effects, if any, as a result of the change to the provisional amounts, calculated as if the accounting had been completed at the acquisition date. ASU 2015-16 was effective for annual and interim periods beginning after December 15, 2015. We adopted ASU 2015-16 during the three months ended March 31, 2016 and it has not had a significant impact on our consolidated financial statements. Leases In February 2016, the FASB issued ASU 2016-02, Leases ("ASU 2016-02"), which sets out the principles for the recognition, measurement, presentation and disclosure of leases for both parties to a contract (i.e. lessees and lessors). ASU 2016-02 supersedes existing leasing standards. ASU 2016-02 requires lessees to apply a dual approach, classifying leases as either finance or operating leases based on the principle of whether or not the lease is effectively a financed purchase of the leased asset by the lessee. This classification will determine whether the lease expense is recognized based on an effective interest method or on a straight-line basis over the term of the lease. A lessee is also required to record a right-of-use asset and a lease liability for all leases with a term of greater than 12 months regardless of their classification. ASU 2016-02 requires lessors to account for leases using an approach that is substantially equivalent to existing guidance for sales-type leases, direct financing leases and operating leases. ASU 2016-02 also requires that lessors expense certain initial direct costs, which are capitalizable under existing leasing standards, as incurred. ASU 2016-02 is effective for us retrospectively for annual and interim reporting periods beginning after December 15, 2018, with early adoption permitted. A set of practical expedients for implementation, which must be elected as a package and for all leases, may also be elected. These practical expedients include relief from re-assessing lease classification at the adoption date for expired or existing leases, although a right-of-use asset and lease liability would still be recorded for such leases. We are currently assessing the method of adoption and the impact that ASU 2016-02 will have on our consolidated financial statements. Stock Based Compensation In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Accounting ("ASU 2016-09"). ASU 2016-09 requires that all excess tax benefits and tax deficiencies related to stock based compensation arrangements must be recognized in the income statement as they occur as opposed to the current guidance where excess tax benefits are recorded in equity. ASU 2016-09 also allows entities to make an accounting policy election to either continue to estimate forfeitures on stock based compensation arrangements or to account for forfeitures as they occur. ASU 2016-09 is effective for annual and interim reporting periods beginning after December 15, 2016 with early adoption permitted. We do not believe ASU 2016-09 will have a material impact on our consolidated financial statements. Statement of Cash Flows In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows ("ASU 2016-15"). ASU 2016-15 clarifies how entities should classify certain cash receipts and cash payments on the statement of cash flows and how the predominance principle should be applied when cash receipts and cash payments have aspects of more than one class of cash flows. ASU 2016-15 is effective for us retrospectively for annual and interim reporting periods beginning after December 15, 2017 with early adoption permitted. We do not believe ASU 2016-15 will have a material impact on our consolidated financial statements.

New Accounting Pronouncements

Revenue Recognition

In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2014-09, Revenue from Contracts with Customers ("ASU 2014-09"). ASU 2014-09 is a comprehensive revenue recognition standard that will supersede nearly all existing GAAP revenue recognition guidance as well as impact the existing GAAP guidance governing the sale of nonfinancial assets. The standard’s core principle is that a company will recognize revenue when it satisfies performance obligations, by transferring promised goods or services to customers, in an amount that reflects the consideration to which an entity expects to be entitled in exchange for fulfilling those performance obligations. ASU 2014-09 will be effective for public entities for annual and interim reporting periods beginning after December 15, 2017 and early adoption is permitted in periods ending after December 15, 2016. ASU 2014-09 allows for either full or modified retrospective adoption.

We have begun to evaluate each of our revenue streams under the new standard and the pattern of recognition is not expected to change significantly. Additionally, we have primarily disposed of property and land in all cash transactions with no contingencies and no future involvement in the operations, and therefore, do not expect the new standard to significantly impact the recognition of property and land sales. We have not yet selected a transition method.

Consolidation

In February 2015, the FASB issued ASU 2015-02, Amendments to the Consolidation Analysis ("ASU 2015-02"). ASU 2015-02 made targeted amendments to the current consolidation guidance and ended the deferral granted to investment companies from applying the existing variable interest entity ("VIE") guidance. ASU 2015-02 was effective for public entities for annual and interim reporting periods beginning after December 15, 2015. We adopted ASU 2015-02 during the three months ended March 31, 2016, and it has not had a significant impact on our consolidated financial statements.

Debt Issuance Costs

In April 2015, the FASB issued ASU 2015-03, Simplifying the Presentation of Debt Issuance Costs ("ASU 2015-03"). ASU 2015-03 required that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability. ASU 2015-03 was effective for us retrospectively for financial statements issued for annual and interim reporting periods beginning after December 15, 2015. We adopted ASU 2015-03 during the three months ended March 31, 2016.

Debt issuance costs related to the Partnership's unsecured line of credit continue to be presented as assets in the consolidated balance sheets, as part of escrow deposits and other assets, pursuant to ASU 2015-15, Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements.

Business Combinations

In September 2015, the FASB issued ASU 2015-16, Business Combinations - Simplifying the Accounting for Measurement-Period Adjustments ("ASU 2015-16"). ASU 2015-16 amended the retroactive requirement to apply adjustments made to provisional amounts recognized in a business combination. The update required that the acquirer record, in the same period’s financial statements, the effect on earnings of changes in depreciation, amortization, or other income effects, if any, as a result of the change to the provisional amounts, calculated as if the accounting had been completed at the acquisition date. ASU 2015-16 was effective for annual and interim periods beginning after December 15, 2015. We adopted ASU 2015-16 during the three months ended March 31, 2016 and it has not had a significant impact on our consolidated financial statements.

Leases

In February 2016, the FASB issued ASU 2016-02, Leases ("ASU 2016-02"), which sets out the principles for the recognition, measurement, presentation and disclosure of leases for both parties to a contract (i.e. lessees and lessors). ASU 2016-02 supersedes existing leasing standards.

ASU 2016-02 requires lessees to apply a dual approach, classifying leases as either finance or operating leases based on the principle of whether or not the lease is effectively a financed purchase of the leased asset by the lessee. This classification will determine whether the lease expense is recognized based on an effective interest method or on a straight-line basis over the term of the lease. A lessee is also required to record a right-of-use asset and a lease liability for all leases with a term of greater than 12 months regardless of their classification. ASU 2016-02 requires lessors to account for leases using an approach that is substantially equivalent to existing guidance for sales-type leases, direct financing leases and operating leases. ASU 2016-02 also requires that lessors expense certain initial direct costs, which are capitalizable under existing leasing standards, as incurred.

ASU 2016-02 is effective for us retrospectively for annual and interim reporting periods beginning after December 15, 2018, with early adoption permitted. A set of practical expedients for implementation, which must be elected as a package and for all leases, may also be elected. These practical expedients include relief from re-assessing lease classification at the adoption date for expired or existing leases, although a right-of-use asset and lease liability would still be recorded for such leases. We are currently assessing the method of adoption and the impact that ASU 2016-02 will have on our consolidated financial statements.

Stock Based Compensation

In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Accounting ("ASU 2016-09"). ASU 2016-09 requires that all excess tax benefits and tax deficiencies related to stock based compensation arrangements must be recognized in the income statement as they occur as opposed to the current guidance where excess tax benefits are recorded in equity. ASU 2016-09 also allows entities to make an accounting policy election to either continue to estimate forfeitures on stock based compensation arrangements or to account for forfeitures as they occur. ASU 2016-09 is effective for annual and interim reporting periods beginning after December 15, 2016 with early adoption permitted. We do not believe ASU 2016-09 will have a material impact on our consolidated financial statements.

Statement of Cash Flows

In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows ("ASU 2016-15"). ASU 2016-15 clarifies how entities should classify certain cash receipts and cash payments on the statement of cash flows and how the predominance principle should be applied when cash receipts and cash payments have aspects of more than one class of cash flows. ASU 2016-15 is effective for us retrospectively for annual and interim reporting periods beginning after December 15, 2017 with early adoption permitted. We do not believe ASU 2016-15 will have a material impact on our consolidated financial statements.