Summary of Significant Accounting Policies | Summary of Significant Accounting Policies The summary of significant accounting policies presented below is designed to assist in understanding the Company’s condensed consolidated financial statements. Such condensed consolidated financial statements and the accompanying notes thereto are the representation of management. The accompanying condensed consolidated unaudited financial statements of the Company have been prepared in accordance with the generally accepted accounting principles in the United States, or GAAP, for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and notes required by GAAP for complete financial statements. In the opinion of management, all adjustments, consisting of normal and recurring nature considered necessary for a fair presentation have been included. Operating results for the three and nine months ended September 30, 2015 are not necessarily indicative of the results that may be expected for the year ending December 31, 2015 . The condensed consolidated balance sheet at December 31, 2014 has been derived from the audited consolidated financial statements at that date but does not include all of the information and notes required by GAAP for complete financial statements. The information included in this Quarterly Report on Form 10-Q should be read in conjunction with the Company’s audited consolidated financial statements as of and for the year ended December 31, 2014 and related notes thereto set forth in the Company’s Annual Report on Form 10-K, filed with the SEC on March 26, 2015. Principles of Consolidation and Basis of Presentation The accompanying condensed consolidated financial statements include the accounts of the Company, the Operating Partnership, all majority-owned subsidiaries and controlled subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. Use of Estimates The preparation of the financial statements in conformity with GAAP necessarily requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates. Concentration of Credit Risk and Significant Leases As of September 30, 2015 , the Company had cash on deposit, including restricted cash, in certain financial institutions which had deposits in excess of current federally insured levels; however, the Company has not experienced any losses in such accounts. The Company limits its cash investments to financial institutions with high credit standings; therefore, the Company believes it is not exposed to any significant credit risk on its cash deposits. To date, the Company has experienced no loss or lack of access to cash in its accounts. Concentration of credit risk with respect to accounts receivable from tenants is limited. As of September 30, 2015 , the Company owned real estate investments in 44 MSAs, (including one real estate investment owned through a consolidated partnership), four of which accounted for 10.0% or more of rental revenue. Real estate investments located in the Dallas-Ft. Worth-Arlington, Texas MSA, the Chicago-Naperville-Elgin, Illinois-Indiana-Wisconsin MSA, the Atlanta-Sandy Springs-Roswell, Georgia MSA and the Houston-The Woodlands-Sugar Land, Texas MSA accounted for an aggregate of 13.8% , 12.1% , 10.1% and 10.6% , respectively, of rental revenue for the nine months ended September 30, 2015 . As of September 30, 2015 , the Company had two tenants that accounted for 10.0% or more of rental revenue. The leases with AT&T Services, Inc. and the lease with Bay Area Regional Medical Center, LLC accounted for 13.2% and 10.4% , respectively, of rental revenue for the nine months ended September 30, 2015 . Share Repurchase Program The Company’s share repurchase program allows for repurchases of shares of the Company’s common stock when certain criteria are met. The share repurchase program provides that all redemptions during any calendar year, including those redeemable upon death or a qualifying disability of a stockholder, are limited to those that can be funded with proceeds raised from the DRIP Offering during the prior calendar year and other operating funds, if any, as the board of directors, in its sole discretion, may reserve for this purpose. Repurchases of shares of the Company’s common stock are at the sole discretion of the Company’s board of directors. In addition, the Company’s board of directors, at its sole discretion, may amend, suspend, reduce, terminate or otherwise change the share repurchase program upon 30 days ' prior notice to the Company’s stockholders for any reason it deems appropriate. The share repurchase program provides that the Company will limit the number of shares repurchased during any calendar year to 5.0% of the number of shares of common stock outstanding as of December 31st of the previous calendar year. During the nine months ended September 30, 2015 , the Company received valid redemption requests related to approximately 577,000 shares of common stock, all of which were redeemed in full for an aggregate purchase price of approximately $5,521,000 (an average of $9.57 per share). During the nine months ended September 30, 2014 , the Company received valid redemption requests related to approximately 295,000 shares of common stock, all of which were redeemed in full for an aggregate purchase price of approximately $2,837,000 (an average of $9.62 per share). Earnings Per Share Basic earnings per share attributable for all periods presented are computed by dividing net income attributable to common stockholders by the weighted average number of shares of common stock outstanding during the period. Shares of non-vested restricted common stock give rise to potentially dilutive shares of common stock. Diluted earnings per share are computed based on the weighted average number of shares outstanding and all potentially dilutive securities. Diluted earnings per share reflect the effect of approximately 17,000 shares for the three months ended September 30, 2015 and 2014 and approximately 19,000 shares for the nine months ended September 30, 2015 and 2014 of non-vested shares of restricted common stock that were outstanding as of such period. Preferred Equity Investment The Company accounts for its Preferred Equity Investment as an asset under the cost method of accounting, as the Company exercises no influence over the investee. The Company recognizes dividends as other income in the condensed consolidated statements of comprehensive income. Recently Issued Accounting Pronouncements On May 28, 2014, the Financial Accounting Standards Board, or the FASB, issued Accounting Standards Update, or ASU, 2014-09, Revenue from Contracts with Customers , or ASU 2014-09. The objective of ASU 2014-09 is to clarify the principles for recognizing revenue and to develop a common revenue standard for GAAP. The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods and services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2014-09 defines a five-step process to achieve this core principle, which may require more judgment and estimates within the revenue recognition process than are required under existing GAAP. In August 2015, the FASB issued ASU 2015-14, Revenue from Contracts with Customers (Topic 606) Deferral of the Effective Date , or ASU 2015-14. ASU 2015-14 defers the effective date of ASU 2014-09 by one year to fiscal years and interim periods beginning after December 15, 2017. Early adoption is permitted as of the original effective date, which was annual reporting periods beginning after December 15, 2016, and the interim periods within that year. The Company is in the process of evaluating the impact ASU 2014-09 will have on the Company’s condensed consolidated financial statements. On February 18, 2015, the FASB issued ASU 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis , or ASU 2015-02, that changes the analysis that a reporting entity must perform to determine whether it should consolidate certain types of legal entities. The amendment affects the following areas: limited partnerships and similar legal entities, evaluating fees paid to a decision maker or a service provider as a variable interest, the effect of fee arrangements on the primary beneficiary determination and certain investment funds. Under the amendment, all reporting entities are within the scope of ASC Subtopic 810-10, Consolidation — Overall , unless a scope exception applies. The presumption that a general partner controls a limited partnership has been eliminated. In addition, fees paid to decision makers that meet certain conditions no longer cause decision makers to consolidate variable interest entities in certain instances. The amendment is effective for public business entities for periods beginning after December 15, 2015. Early adoption of ASU 2015-02 is permitted. The Company is in the process of evaluating the impact ASU 2015-02 will have on the Company’s condensed consolidated financial statements. On April 7, 2015, the FASB issued ASU 2015-03, Interest — Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs , or ASU 2015-03, that intends to simplify the presentation of debt issuance costs. The amendment requires 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. On August 18, 2015, the FASB issued ASU 2015-15, Interest — Imputation of Interest (Subtopic 835-30): Presentation and Subsequent Measurement of Debt Issuance Costs Associated With Line-of-Credit Arrangements — Amendments to SEC Paragraphs Pursuant to Staff Announcement at June 18, 2015 Emerging Issues Task Force Meeting (SEC Update), or ASU 2015-15, which clarified that the SEC staff would not object to an entity deferring and presenting debt issuance costs as an asset and subsequently amortizing the deferred debt issuance costs ratably over the term of the line-of-credit arrangement, regardless of whether there are any outstanding borrowings on the line-of-credit arrangement. Both ASU 2015-03 and ASU 2015-15 are effective for public business entities for fiscal years beginning after December 15, 2015, and are to be applied retrospectively, with early adoption permitted. The Company is in the process of evaluating the impact ASU 2015-03 and ASU 2015-15 will have on the Company’s condensed consolidated financial statements. On September 25, 2015, the FASB issued ASU 2015-16, Business Combinations (Topic 805): Simplifying the Accounting for Measurement-Period Adjustments, or ASU 2015-16, which eliminates the requirement for an acquirer to retrospectively adjust the financial statements for measurement-period adjustments that occur in periods after a business combination is consummated. ASU 2015-16 requires that the acquirer recognize adjustments to the provisional amounts recorded in the reporting period when the adjustments are determined. The effects of adjustments (such as depreciation, amortization, or other income effects) to provisional amounts to periods after the acquisition date are included in the earnings of the current reporting period. The amendment is effective for public business entities for fiscal years beginning after December 15, 2015, including interim periods within those fiscal years. Early adoption of ASU 2015-16 is permitted. The Company is in the process of evaluating the impact ASU 2015-16 will have on the Company’s condensed consolidated financial statements. Reclassifications Certain prior period amounts have been reclassified to conform to the current financial statement presentation, with no effect on the Company’s condensed consolidated financial position or results of operations. |