Summary of Significant Accounting Policies | Summary of Significant Accounting Policies Basis of Presentation The accompanying consolidated financial statements, presented in U.S. dollars, are prepared in accordance with U.S. generally accepted accounting principles (“GAAP”). GAAP requires the Company to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities as of the date of the financial statements, and revenue and expenses during the reporting periods. The Company’s actual results could differ from those estimates and assumptions. All material intercompany transactions among consolidated entities have been eliminated. All dollar amounts in the tables herein, except share, per share, unit and per unit amounts, are stated in thousands unless otherwise indicated. Principles of Consolidation The Company’s consolidated financial statements include its accounts and the accounts of other subsidiaries and joint ventures (including partnerships and limited liability companies) over which it has control. Investments acquired or created are evaluated based on the accounting guidance relating to variable interest entities (“VIEs”), which requires the consolidation of VIEs in which the Company is considered to be the primary beneficiary. If the investment is determined not to be a VIE, then the investment is evaluated for consolidation using the voting interest model. Recently Issued Accounting Pronouncements In August 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update 2017-12 (“ASU 2017-12”), “Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities.” The purpose of this ASU is to improve the financial reporting of hedging relationships to better portray the economic results of an entity’s risk management activities in its financial statements. In addition to that main objective, the amendments in this update make certain targeted improvements to simplify the application of the hedge accounting guidance in current GAAP. The guidance is effective for public business entities for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted in any interim period after the issuance date of this update. All transition requirements and elections should be applied to hedging relationships existing on the date of adoption. The effect of adoption should be reflected as of the beginning of the fiscal year of adoption. The Company is currently in the process of assessing the effects of this ASU, but does not anticipate a material impact on its consolidated financial statements. In February 2017, the FASB issued Accounting Standards Update 2017-05 (“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 purpose of this ASU is to eliminate the diversity in practice in accounting for derecognition of a nonfinancial asset and in-substance nonfinancial assets (only when the asset or asset group does not meet the definition of a business or the transaction is not a sale to a customer). The guidance is effective for public business entities for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption for the fiscal years beginning after December 15, 2016 is permitted. This ASU is required to be adopted in conjunction with the Company’s adoption of ASU 2014-09, the new revenue recognition standard, which will be adopted as of January 1, 2018. Upon adoption of this ASU, application must be performed on a retrospective basis for each period presented in the Company’s financial statements or a retrospective basis with a cumulative-effect adjustment to retained earnings at the beginning of the fiscal year of adoption. The Company currently does not anticipate a material impact to its consolidated financial statements for property dispositions given the simplicity of the Company’s historical disposition transactions. In February 2016, the FASB issued Accounting Standards Update 2016-02 (“ASU 2016-02”), “Leases (Topic 842): Amendments to the FASB Accounting Standards Codification.” ASU 2016-02 amends the existing accounting standards for lease accounting, including requiring lessees to recognize most leases on their balance sheets and making targeted changes to lessor accounting. The new standard requires a modified retrospective transition approach for all leases existing at, or entered into after, the date of initial application, with an option to use certain transition relief. The guidance is effective for public business entities for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years. Early adoption is permitted. Subsequent to the issuance of ASU 2016-02, the FASB issued an additional Accounting Standards Update clarifying aspects of the new lease accounting standard, which will be effective upon adoption of ASU 2016-02. The Company plans to adopt ASU 2016-02 as of January 1, 2019. While the Company is still evaluating the effect that the updated standard will have on its consolidated financial statements and related disclosures, it expects to recognize right-of-use assets and related lease liabilities on its consolidated balance sheets related to ground leases under which it is the lessee. In May 2014, the FASB issued Accounting Standards Update 2014-09 (“ASU 2014-09”), “Revenue From Contracts With Customers (Topic 606)”. ASU 2014-09 provides a single comprehensive revenue recognition model for contracts with customers (excluding certain contracts, such as lease contracts) to improve comparability within industries. ASU 2014-09 requires an entity to recognize revenue to reflect the transfer of goods or services to customers at an amount the entity expects to be paid in exchange for those goods and services and provide enhanced disclosures, all to provide more comprehensive guidance for transactions such as service revenue and contract modifications. Subsequent to the issuance of ASU 2014-09, the FASB has issued multiple Accounting Standards Updates clarifying multiple aspects of the new revenue recognition standard, which include the deferral of the effective date by one year. ASU 2014-09, as amended by subsequent Accounting Standards Updates, is effective for public entities for interim and annual periods beginning after December 15, 2017 and may be applied using either a full retrospective or modified retrospective approach upon adoption. The Company plans to adopt the new revenue standard using the modified retrospective approach as of January 1, 2018 and is currently evaluating each of its revenue streams to identify any differences in the timing, measurement or presentation of revenue recognition under the new standard. The Company does not expect the adoption of this standard to have a significant impact on its consolidated financial statements, as a substantial portion of its revenue consists of rental income from leasing arrangements, which is specifically excluded from ASU 2014-09, and will be evaluated with the adoption of the lease accounting standard, ASU 2016-02, discussed above. The Company anticipates the primary effects of the new standard will be associated with the Company’s non-leasing revenue streams, which represent less than 5% of consolidated total revenues. In addition, the Company does not expect the following accounting pronouncements to have a material effect on its consolidated financial statements: • ASU 2017-09, “Compensation—Stock Compensation (Topic 718): Scope of Modification Accounting.” • ASU 2016-18, “Statement of Cash Flows (Topic 230): Restricted Cash.” • ASU 2016-15, “Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments.” • ASU 2016-13, “Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” Recently Adopted Accounting Pronouncements On January 1, 2017, the Company adopted Accounting Standards Update 2017-01 (“ASU 2017-01”), “Business Combinations (Topic 805): Clarifying the Definition of a Business.” The amendments in this guidance clarify the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The guidance is effective for public business entities for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years; early adoption is permitted. ASU 2017-01 will be applied prospectively to any transactions occurring subsequent to January 1, 2017. Under the new standard, the Company expects that most property acquisitions will be accounted for as asset acquisitions, and as a result, most transaction costs will be capitalized rather than expensed. The impact on the Company’s consolidated financial statements will depend on the size and volume of future acquisition activity. In addition, on January 1, 2017, the Company adopted the following accounting pronouncements which did not have a material effect on the Company’s consolidated financial statements: • ASU 2017-03, “Accounting Changes and Error Corrections (Topic 250) and Investments — Equity Method and Joint Ventures (Topic 323): Amendments to SEC Paragraphs Pursuant to Staff Announcements at the September 22, 2016 and November 17, 2016 EITF Meetings (SEC Update).” • ASU 2016-05, “Derivatives and Hedging (Topic 815): Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships.” Interim Financial Statements The accompanying interim financial statements are unaudited, but have been prepared in accordance with GAAP for interim financial information and in conjunction with the rules and regulations of the Securities and Exchange Commission. Accordingly, they do not include all disclosures required by GAAP for complete financial statements. In the opinion of management, all adjustments (consisting solely of normal recurring matters) necessary for a fair presentation of the financial statements of the Company for these interim periods have been included. Because of the seasonal nature of the Company’s operations, the results of operations and cash flows for any interim period are not necessarily indicative of results for other interim periods or for the full year. These financial statements should be read in conjunction with the financial statements and the notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016 . Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosures of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Investments in Real Estate Investments in real estate are recorded at historical cost. Major improvements that extend the life of an asset are capitalized and depreciated over the remaining useful life of the asset. The cost of ordinary repairs and maintenance are charged to expense when incurred. Depreciation and amortization are recorded on a straight-line basis over the estimated useful lives of the assets as follows: Buildings and improvements 7-40 years Leasehold interest - on-campus participating properties 25-34 years (shorter of useful life or respective lease term) Furniture, fixtures and equipment 3-7 years Project costs directly associated with the development and construction of an owned real estate project, which include interest, property taxes, and amortization of deferred finance costs, are capitalized as construction in progress. Upon completion of the project, costs are transferred into the applicable asset category and depreciation commences. Interest totaling approximately $3.4 million and $3.3 million was capitalized during the three months ended September 30, 2017 and 2016 , respectively, and interest totaling approximately $13.5 million and $9.0 million was capitalized during the nine months ended September 30, 2017 and 2016 , respectively. Management assesses whether there has been an impairment in the value of the Company’s investments in real estate whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Impairment is recognized when estimated expected future undiscounted cash flows are less than the carrying value of the property, or when a property meets the criteria to be classified as held for sale, at which time an impairment charge is recognized for any excess of the carrying value of the property over the expected net proceeds from the disposal. The estimation of expected future net cash flows is inherently uncertain and relies on assumptions regarding current and future economics and market conditions. If such conditions change, then an adjustment to the carrying value of the Company’s long-lived assets could occur in the future period in which the conditions change. To the extent that a property is impaired, the excess of the carrying amount of the property over its estimated fair value is charged to earnings. The Company believes that there were no impairment indicators of the carrying values of its investments in real estate as of September 30, 2017 , other than a $15.3 million impairment charge recorded during the second quarter 2017 for one property that is in the process of being transferred to the lender in settlement of the property’s $27.4 million mortgage loan that matured in August 2017 (see Note 7 ). The Company evaluates each acquisition to determine if the integrated set of assets and activities acquired meet the definition of a business under ASU 2017-01. If either of the following criteria is met, the integrated set of assets and activities acquired would not qualify as a business: • Substantially all of the fair value of the gross assets acquired is concentrated in either a single identifiable asset or a group of similar identifiable assets; or • The integrated set of assets and activities is lacking, at a minimum, an input and a substantive process that together significantly contribute to the ability to create outputs (i.e. revenue generated before and after the transaction). Property acquisitions deemed to qualify as a business are accounted for as business combinations, and the related acquisition costs are expensed as incurred. The Company allocates the purchase price of properties acquired in business combinations to net tangible and identified intangible assets based on their fair values. Fair value estimates are based on information obtained from a number of sources, including independent appraisals that may be obtained in connection with the acquisition or financing of the respective property, the Company’s own analysis of recently acquired and existing comparable properties in the Company’s portfolio, and other market data. Information obtained about each property as a result of due diligence, marketing and leasing activities is also considered. The value allocated to land is generally based on the actual purchase price if acquired separately, or market research/comparables if acquired as part of an existing operating property. The value allocated to building is based on the fair value determined on an “as-if vacant” basis, which is estimated using a replacement cost approach that relies upon assumptions that the Company believes are consistent with current market conditions for similar properties. The value allocated to furniture, fixtures, and equipment is based on an estimate of the fair value of the appliances and fixtures inside the units. The Company has determined these estimates are primarily based upon unobservable inputs and therefore are considered to be Level 3 inputs within the fair value hierarchy. Acquisitions of properties that do not meet the definition of a business are accounted for as asset acquisitions. The accounting model for asset acquisitions is similar to the accounting model for business combinations except that the acquisition consideration (including transaction costs) is allocated to the individual assets acquired and liabilities assumed on a relative fair value basis. The relative fair values used to allocate the cost of an asset acquisition are determined using the same methodologies and assumptions as those utilized to determine fair value in a business combination. Redeemable noncontrolling interests The Company follows guidance issued by the FASB regarding the classification and measurement of redeemable securities. Under this guidance, securities that are redeemable for cash or other assets, at the option of the holder and not solely within the control of the issuer, must be classified outside of permanent equity as redeemable noncontrolling interests. The Company makes this determination based on terms in the applicable agreements, specifically in relation to redemption provisions. The Company initially records the redeemable noncontrolling interests at fair value. The carrying amount of the redeemable noncontrolling interest is subsequently adjusted to the redemption value (assuming the noncontrolling interest is redeemable at the balance sheet date), with the corresponding offset for changes in fair value recorded in additional paid in capital. Reductions in fair value are recorded only to the extent that the Company has previously recorded increases in fair value above the redeemable noncontrolling interests’ initial basis. As the changes in redemption value are based on fair value, there is no effect on the Company’s earnings per share. Redeemable noncontrolling interests on the accompanying consolidated balance sheets of ACC are referred to as redeemable limited partners on the consolidated balance sheets of the Operating Partnership. Refer to Note 9 for a more detailed discussion of redeemable noncontrolling interests for both ACC and the Operating Partnership. Pre-development Expenditures Pre-development expenditures such as architectural fees, permits and deposits associated with the pursuit of third-party and owned development projects are expensed as incurred, until such time that management believes it is probable that the contract will be executed and/or construction will commence, at which time the Company capitalizes the costs. Because the Company frequently incurs these pre-development expenditures before a financing commitment and/or required permits and authorizations have been obtained, the Company bears the risk of loss of these pre-development expenditures if financing cannot ultimately be arranged on acceptable terms or the Company is unable to successfully obtain the required permits and authorizations. As such, management evaluates the status of third-party and owned projects that have not yet commenced construction on a periodic basis and expenses any deferred costs related to projects whose current status indicates the commencement of construction is unlikely and/or the costs may not provide future value to the Company in the form of revenues. Such write-offs are included in third-party development and management services expenses (in the case of third-party development projects) or general and administrative expenses (in the case of owned development projects) on the accompanying consolidated statements of comprehensive income. As of September 30, 2017 , the Company has deferred approximately $5.6 million in pre-development costs related to third-party and owned development projects that have not yet commenced construction. Such costs are included in other assets on the accompanying consolidated balance sheets. Earnings per Share – Company Basic earnings per share is computed using net income attributable to common stockholders and the weighted average number of shares of the Company’s common stock outstanding during the period. Diluted earnings per share reflects common shares issuable from the assumed conversion of American Campus Communities Operating Partnership Units (“OP Units”) and common share awards granted. Only those items having a dilutive impact on basic earnings per share are included in diluted earnings per share. The following potentially dilutive securities were outstanding for the three and nine months ended September 30, 2017 and 2016 , but were not included in the computation of diluted earnings per share because the effects of their inclusion would be anti-dilutive. Three Months Ended Nine Months Ended 2017 2016 2017 2016 Common OP Units (Note 9) 1,011,674 1,221,242 1,023,248 1,278,148 Preferred OP Units (Note 9) 77,513 87,767 77,513 95,212 Unvested restricted stock awards (Note10) 818,547 — — — Total potentially dilutive securities 1,907,734 1,309,009 1,100,761 1,373,360 The following is a summary of the elements used in calculating basic and diluted earnings per share: Three Months Ended Nine Months Ended 2017 2016 2017 2016 Numerator – basic and diluted earnings per share: Net (loss) income $ (1,233 ) $ 9,845 $ 30,563 $ 74,819 Net income attributable to noncontrolling interests (79 ) (201 ) (587 ) (1,150 ) Net (loss) income attributable to common stockholders (1,312 ) 9,644 29,976 73,669 Amount allocated to participating securities (360 ) (329 ) (1,217 ) (1,051 ) Net (loss) income attributable to common stockholders $ (1,672 ) $ 9,315 $ 28,759 $ 72,618 Denominator: Basic weighted average common shares outstanding 136,421,198 130,786,985 134,708,361 128,239,294 Unvested restricted stock awards (Note 10) — 781,386 877,489 795,107 Diluted weighted average common shares outstanding 136,421,198 131,568,371 135,585,850 129,034,401 Earnings per share: Net (loss) income attributable to common stockholders - basic $ (0.01 ) $ 0.07 $ 0.21 $ 0.57 Net (loss) income attributable to common stockholders - diluted $ (0.01 ) $ 0.07 $ 0.21 $ 0.56 Earnings per Unit – Operating Partnership Basic earnings per OP Unit is computed using net income attributable to common unitholders and the weighted average number of common units outstanding during the period. Diluted earnings per OP Unit reflects the potential dilution that could occur if securities or other contracts to issue OP Units were exercised or converted into OP Units or resulted in the issuance of OP Units and then shared in the earnings of the Operating Partnership. The following is a summary of the elements used in calculating basic and diluted earnings per unit: Three Months Ended Nine Months Ended 2017 2016 2017 2016 Numerator – basic and diluted earnings per unit: Net (loss) income $ (1,233 ) $ 9,845 $ 30,563 $ 74,819 Net income attributable to noncontrolling interests – partially owned properties (57 ) (77 ) (259 ) (285 ) Series A preferred unit distributions (31 ) (36 ) (93 ) (115 ) Amount allocated to participating securities (360 ) (329 ) (1,217 ) (1,051 ) Net (loss) income attributable to common unitholders $ (1,681 ) $ 9,403 $ 28,994 $ 73,368 Denominator: Basic weighted average common units outstanding 137,432,872 132,008,227 135,731,609 129,517,442 Unvested restricted stock awards (Note 10) — 781,386 877,489 795,107 Diluted weighted average common units outstanding 137,432,872 132,789,613 136,609,098 130,312,549 Earnings per unit: Net (loss) income attributable to common unitholders - basic $ (0.01 ) $ 0.07 $ 0.21 $ 0.57 Net (loss) income attributable to common unitholders - diluted $ (0.01 ) $ 0.07 $ 0.21 $ 0.56 |