Summary of Significant Accounting Policies	6 Months Ended
Jun. 30, 2017
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies The Company's Annual Report on Form 10-K for the year ended December 31, 2016 contains a discussion of the significant accounting policies. Other than noted below, there have been no other significant changes to the Company's significant accounting policies since December 31, 2016. Basis of Presentation and Principles of Consolidation The unaudited consolidated financial statements and related notes have been prepared on the accrual basis of accounting in accordance with accounting principles generally accepted in the United States of America ("GAAP") and in conformity with the rules and regulations of the Securities and Exchange Commission ("SEC") applicable to financial information. The unaudited financial statements include all adjustments that are necessary, in the opinion of management, to fairly state the consolidated balance sheets, statements of operations and comprehensive income, statements of changes in equity and statements of cash flows. The unaudited consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto as of and for the year ended December 31, 2016, included in the Company's Annual Report on Form 10-K filed with the SEC on February 23, 2017. The consolidated financial statements include the accounts of the Company, the Operating Partnership and its wholly-owned subsidiaries, and a joint venture in which the Company has a majority voting interest and control. For the controlled subsidiaries that are not wholly-owned, the third-party ownership interest represents a noncontrolling interest, which is presented separately in the consolidated financial statements. All intercompany balances and transactions have been eliminated in consolidation. Reclassifications Certain prior year amounts in these financial statements have been reclassified to conform to the current year presentation with no impact to net income, shareholders’ equity or cash flows. Use of Estimates The preparation of the Company’s financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of certain assets and liabilities and the amounts of contingent assets and liabilities at the balance sheet date and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Recently Issued Accounting Pronouncements In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2014-09, Revenue from Contracts with Customers, which supersedes or replaces nearly all GAAP revenue recognition guidance. The new guidance establishes a new control-based revenue recognition model that changes the basis for deciding when revenue is recognized over time or at a point in time and expands the disclosures about revenue. The new guidance also applies to sales of real estate and the new principles-based approach is largely based on the transfer of control of the real estate to the buyer. The guidance is effective for annual reporting periods beginning after December 15, 2017, and the interim periods within those annual periods, with early adoption permitted. The Company expects to adopt this new standard on January 1, 2018 using the modified retrospective transition method. Based on the Company's assessment, the adoption of this standard will not have a material impact on the Company's consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842). The new guidance will require lessees to recognize a right-of-use asset and a lease liability for most of their leases on the balance sheet, and an entity will need to classify its leases as either an operating or finance lease in order to determine the income statement presentation. Leases with a term of 12 months or less will be accounted for similar to the existing guidance today for operating leases. Lessors will classify their leases using an approach that is substantially equivalent to the existing guidance today for operating, direct financing, or sales-type leases. Lessors may only capitalize the incremental direct costs of leasing, so any indirect costs of leasing will be expensed as incurred. The new guidance requires an entity to separate the lease components from the non-lease components in a contract, with the lease components being accounted for in accordance with ASC 842 and the non-lease components being accounted for in accordance with other applicable accounting guidance. The guidance is effective for annual reporting periods beginning after December 15, 2018, and the interim periods within those annual periods, with early adoption permitted. The Company expects to adopt this new standard on January 1, 2019. The Company has not yet completed its analysis on this new standard, but it believes the application of the new standard will result in the recording of a right-of-use asset and a lease liability on the consolidated balance sheet for each of its ground leases and equipment leases, which represent the majority of the Company's current operating lease payments. The Company does not expect the adoption of this standard will materially affect its consolidated statements of operations. In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230), Classification of Certain Cash Receipts and Cash Payments. This new guidance is intended to reduce the diversity in practice in how certain transactions are classified in the statement of cash flows. In addition, in November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230), Restricted Cash. This new guidance provides additional guidance related to transfers between cash and restricted cash and how entities present, in their statement of cash flows, the cash receipts and cash payments that directly affect the restricted cash accounts. Both of these ASUs will be effective for the annual reporting periods beginning after December 15, 2017, and the interim periods within those annual periods. Early adoption is permitted, provided that all of the amendments are adopted in the same period, and the guidance requires application using a retrospective transition method. The Company expects to adopt the new guidance on January 1, 2018. The adoption of ASU 2016-15 and ASU 2016-18 will modify the Company's current disclosures and classifications within the consolidated statement of cash flows, but they are not expected to have a material impact on the Company's consolidated financial statements. In January 2017, the FASB issued ASU 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business. The new guidance clarifies the definition of a business with the objective of adding guidance to assist companies and other reporting organizations with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The changes to the definition of a business will likely result in more acquisitions being accounted for as asset acquisitions across all industries. The guidance is effective for annual reporting periods beginning after December 15, 2017, and the interim periods within those annual periods. The Company expects to adopt this new guidance on January 1, 2018. The Company is currently evaluating whether this ASU will have a material impact on the Company's consolidated financial statements. In February 2017, the FASB issued ASU 2017-05, Other Income - Gains and Losses from the Derecognition of Nonfinancial Assets (Subtopic 610-20): Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets. The new guidance clarifies that ASC 610-20 applies to the derecognition of nonfinancial assets, including real estate, and in substance nonfinancial assets, which are defined as assets or a group of assets for which substantially all of the fair value consists of nonfinancial assets and the group or subsidiary is not a business. As a result of the new guidance, sales and partial sales of real estate assets will be accounted for similar to all other sales of nonfinancial and in substance nonfinancial assets. The guidance is effective for annual reporting periods beginning after December 15, 2017, and the interim periods within those annual periods, with early adoption permitted. The Company expects to adopt this new guidance on January 1, 2018. Based on the Company's assessment, the adoption of this guidance will not have a material impact on the Company's consolidated financial statements.

Summary of Significant Accounting Policies

The Company's Annual Report on Form 10-K for the year ended December 31, 2016 contains a discussion of the significant accounting policies. Other than noted below, there have been no other significant changes to the Company's significant accounting policies since December 31, 2016.

Basis of Presentation and Principles of Consolidation

The unaudited consolidated financial statements and related notes have been prepared on the accrual basis of accounting in accordance with accounting principles generally accepted in the United States of America ("GAAP") and in conformity with the rules and regulations of the Securities and Exchange Commission ("SEC") applicable to financial information. The unaudited financial statements include all adjustments that are necessary, in the opinion of management, to fairly state the consolidated balance sheets, statements of operations and comprehensive income, statements of changes in equity and statements of cash flows.

The unaudited consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto as of and for the year ended December 31, 2016, included in the Company's Annual Report on Form 10-K filed with the SEC on February 23, 2017.

The consolidated financial statements include the accounts of the Company, the Operating Partnership and its wholly-owned subsidiaries, and a joint venture in which the Company has a majority voting interest and control. For the controlled subsidiaries that are not wholly-owned, the third-party ownership interest represents a noncontrolling interest, which is presented separately in the consolidated financial statements. All intercompany balances and transactions have been eliminated in consolidation.

Reclassifications

Certain prior year amounts in these financial statements have been reclassified to conform to the current year presentation with no impact to net income, shareholders’ equity or cash flows.

Use of Estimates

The preparation of the Company’s financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of certain assets and liabilities and the amounts of contingent assets and liabilities at the balance sheet date and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Recently Issued Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2014-09, Revenue from Contracts with Customers, which supersedes or replaces nearly all GAAP revenue recognition guidance. The new guidance establishes a new control-based revenue recognition model that changes the basis for deciding when revenue is recognized over time or at a point in time and expands the disclosures about revenue. The new guidance also applies to sales of real estate and the new principles-based approach is largely based on the transfer of control of the real estate to the buyer. The guidance is effective for annual reporting periods beginning after December 15, 2017, and the interim periods within those annual periods, with early adoption permitted. The Company expects to adopt this new standard on January 1, 2018 using the modified retrospective transition method. Based on the Company's assessment, the adoption of this standard will not have a material impact on the Company's consolidated financial statements.

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842). The new guidance will require lessees to recognize a right-of-use asset and a lease liability for most of their leases on the balance sheet, and an entity will need to classify its leases as either an operating or finance lease in order to determine the income statement presentation. Leases with a term of 12 months or less will be accounted for similar to the existing guidance today for operating leases. Lessors will classify their leases using an approach that is substantially equivalent to the existing guidance today for operating, direct financing, or sales-type leases. Lessors may only capitalize the incremental direct costs of leasing, so any indirect costs of leasing will be expensed as incurred. The new guidance requires an entity to separate the lease components from the non-lease components in a contract, with the lease components being accounted for in accordance with ASC 842 and the non-lease components being accounted for in accordance with other applicable accounting guidance. The guidance is effective for annual reporting periods beginning after December 15, 2018, and the interim periods within those annual periods, with early adoption permitted. The Company expects to adopt this new standard on January 1, 2019. The Company has not yet completed its analysis on this new standard, but it believes the application of the new standard will result in the recording of a right-of-use asset and a lease liability on the consolidated balance sheet for each of its ground leases and equipment leases, which represent the majority of the Company's current operating lease payments. The Company does not expect the adoption of this standard will materially affect its consolidated statements of operations.

In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230), Classification of Certain Cash Receipts and Cash Payments. This new guidance is intended to reduce the diversity in practice in how certain transactions are classified in the statement of cash flows. In addition, in November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230), Restricted Cash. This new guidance provides additional guidance related to transfers between cash and restricted cash and how entities present, in their statement of cash flows, the cash receipts and cash payments that directly affect the restricted cash accounts. Both of these ASUs will be effective for the annual reporting periods beginning after December 15, 2017, and the interim periods within those annual periods. Early adoption is permitted, provided that all of the amendments are adopted in the same period, and the guidance requires application using a retrospective transition method. The Company expects to adopt the new guidance on January 1, 2018. The adoption of ASU 2016-15 and ASU 2016-18 will modify the Company's current disclosures and classifications within the consolidated statement of cash flows, but they are not expected to have a material impact on the Company's consolidated financial statements.

In January 2017, the FASB issued ASU 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business. The new guidance clarifies the definition of a business with the objective of adding guidance to assist companies and other reporting organizations with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The changes to the definition of a business will likely result in more acquisitions being accounted for as asset acquisitions across all industries. The guidance is effective for annual reporting periods beginning after December 15, 2017, and the interim periods within those annual periods. The Company expects to adopt this new guidance on January 1, 2018. The Company is currently evaluating whether this ASU will have a material impact on the Company's consolidated financial statements.

In February 2017, the FASB issued ASU 2017-05, Other Income - Gains and Losses from the Derecognition of Nonfinancial Assets (Subtopic 610-20): Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets. The new guidance clarifies that ASC 610-20 applies to the derecognition of nonfinancial assets, including real estate, and in substance nonfinancial assets, which are defined as assets or a group of assets for which substantially all of the fair value consists of nonfinancial assets and the group or subsidiary is not a business. As a result of the new guidance, sales and partial sales of real estate assets will be accounted for similar to all other sales of nonfinancial and in substance nonfinancial assets. The guidance is effective for annual reporting periods beginning after December 15, 2017, and the interim periods within those annual periods, with early adoption permitted. The Company expects to adopt this new guidance on January 1, 2018. Based on the Company's assessment, the adoption of this guidance will not have a material impact on the Company's consolidated financial statements.