SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
Dec. 31, 2017
SIGNIFICANT ACCOUNTING POLICIES
SIGNIFICANT ACCOUNTING POLICIES	NOTE 2—SIGNIFICANT ACCOUNTING POLICIES Principles of Consolidation The consolidated financial statements include the accounts and operations of OLP, its wholly-owned subsidiaries, its joint ventures in which the Company, as defined, has a controlling interest, and variable interest entities ("VIEs") of which the Company is the primary beneficiary. OLP and its consolidated subsidiaries are hereinafter referred to as the "Company". Material intercompany items and transactions have been eliminated in consolidation. Investment in Joint Ventures and Variable Interest Entities The Financial Accounting Standards Board, or FASB, provides guidance for determining whether an entity is a VIE. VIEs are defined as entities in which equity investors do not have the characteristics of a controlling financial interest or do not have sufficient equity at risk for the entity to finance its activities without additional subordinated financial support. A VIE is required to be consolidated by its primary beneficiary, which is the party that (i) has the power to control the activities that most significantly impact the VIE's economic performance and (ii) has the obligation to absorb losses, or the right to receive benefits, of the VIE that could potentially be significant to the VIE. The Company assesses the accounting treatment for each of its investments, including a review of each venture or limited liability company or partnership agreement, to determine the rights of each party and whether those rights are protective or participating. The agreements typically contain certain protective rights, such as the requirement of partner approval to sell, finance or refinance the property and to pay capital expenditures and operating expenditures outside of the approved budget or operating plan. In situations where, among other things, the Company and its partners jointly (i) approve the annual budget, (ii) approve certain expenditures, (iii) prepare or review and approve the joint venture's tax return before filing, and (iv) approve each lease at a property, the Company does not consolidate as the Company considers these to be substantive participation rights that result in shared, joint power over the activities that most significantly impact the performance of the joint venture or property. Additionally, the Company assesses the accounting treatment for any interests pursuant to which the Company may have a variable interest as a lessor. Leases may contain certain protective rights, such as the right of sale and the receipt of certain escrow deposits. The Company accounts for its investments in unconsolidated joint ventures under the equity method of accounting. All investments in unconsolidated joint ventures have sufficient equity at risk to permit the entity to finance its activities without additional subordinated financial support and, as a group, the holders of the equity at risk have power through voting rights to direct the activities of these ventures. As a result, none of these joint ventures are VIEs. In addition, the Company shares power with its co-managing members over these entities, and therefore the entities are not consolidated. These investments are recorded initially at cost, as investments in unconsolidated joint ventures, and subsequently adjusted for their share of equity in earnings, cash contributions and distributions. None of the joint venture debt is recourse to the Company, subject to standard carve-outs. The Company periodically reviews its investments in unconsolidated joint ventures for other-than-temporary losses in investment value. Any decline that is not expected to be recovered based on the underlying assets of the investment is considered other than temporary and an impairment charge is recorded as a reduction in the carrying value of the investment. During the three years ended December 31, 2017, there were no impairment charges related to the Company's investments in unconsolidated joint ventures. The Company has elected to follow the cumulative earnings approach when assessing, for the consolidated statement of cash flows, whether the distribution from the investee is a return of the investor's investment as compared to a return on its investment. The source of the cash generated by the investee to fund the distribution is not a factor in the analysis (that is, it does not matter whether the cash was generated through investee refinancing, sale of assets or operating results). Consequently, the investor only considers the relationship between the cash received from the investee to its equity in the undistributed earnings of the investee, on a cumulative basis, in assessing whether the distribution from the investee is a return on or return of its investment. Cash received from the unconsolidated entity is presumed to be a return on the investment to the extent that, on a cumulative basis, distributions received by the investor are less than its share of the equity in the undistributed earnings of the entity. Use of Estimates The preparation of the consolidated financial statements in conformity with U.S. generally accepted accounting principles ("GAAP") requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates. Management believes that the estimates and assumptions that are most important to the portrayal of the Company's consolidated financial condition and results of operations, in that they require management's most difficult, subjective or complex judgments, form the basis of the accounting policies deemed to be most significant to the Company. These significant accounting policies relate to revenues and the value of the Company's real estate portfolio, including investments in unconsolidated joint ventures. Management believes its estimates and assumptions related to these significant accounting policies are appropriate under the circumstances; however, should future events or occurrences result in unanticipated consequences, there could be a material impact on the Company's future consolidated financial condition or results of operations. Revenue Recognition Rental income includes the base rent that each tenant is required to pay in accordance with the terms of their respective leases reported on a straight-line basis over the non-cancelable term of the lease. In determining, in its judgment, that the unbilled rent receivable applicable to each specific property is collectible, management reviews unbilled rent receivables on a quarterly basis and takes into consideration the tenant's payment history and financial condition. Some of the leases provide for increases based on the Consumer Price Index and for additional contingent rental revenue in the form of percentage rents. The percentage rents are based upon the level of sales achieved by the lessee and are recognized once the required sales levels are reached. Certain ground leases provide for rent which can be deferred and paid based on the operating performance of the property; therefore, this rent is recognized as rental income when the operating performance is achieved and the rent is received. Many of the Company's properties are subject to long-term net leases under which the tenant is typically responsible to pay directly to the vendor the real estate taxes, insurance, utilities and ordinary maintenance and repairs related to the property, and the Company is not the primary obligor with respect to such items. As a result, the revenue and expenses relating to these properties are recorded on a net basis. For certain properties, in addition to contractual base rent, the tenants pay their pro rata share of real estate taxes and operating expenses to the Company. The income and expenses associated with these properties are generally recorded on a gross basis when the Company is the primary obligor. During 2017, 2016 and 2015, the Company recorded reimbursements of expenses of $7,672,000, $6,424,000 and $3,852,000, respectively, which are reported as Tenant reimbursements in the accompanying consolidated statements of income. Gains and losses on the sale of real estate investments are recorded when the criteria under GAAP have been met. Fair Value Measurements The Company measures the fair value of financial instruments based on the assumptions that market participants would use in pricing the asset or liability. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (exit price). As a basis for considering market participant assumptions in fair value measurements, a fair value hierarchy distinguishes between market participant assumptions based on market data obtained from sources independent of the reporting entity and the reporting entity's own assumptions about market participant assumptions. In accordance with the fair value hierarchy, Level 1 assets/liabilities are valued based on quoted prices for identical instruments in active markets, Level 2 assets/liabilities are valued based on quoted prices in active markets for similar instruments, on quoted prices in less active or inactive markets, or on other "observable" market inputs and Level 3 assets/liabilities are valued based on significant "unobservable" market inputs. Purchase Accounting for Acquisition of Real Estate In January 2017, the Company adopted ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business, which requires an entity to evaluate whether substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets, and if that requirement is met, the asset group is accounted for as an asset acquisition and not a business combination. Transaction costs incurred with such asset acquisitions are capitalized to real estate assets and depreciated over the respectful useful lives. The Company analyzed the real estate acquisitions made during 2017 and determined the gross assets acquired are concentrated in a single identifiable asset. Prior to January 1, 2017, the Company recorded acquired real estate investments as business combinations when the real estate was occupied, at least in part, at acquisition. Costs directly related to the acquisition of such investments were expensed as incurred. The Company allocates the purchase price of real estate among land, building, improvements and intangibles, such as the value of above, below and at-market leases, and origination costs associated with in-place leases at the acquisition date. The Company assesses the fair value of the tangible assets of an acquired property by valuing the property as if it were vacant. The value, as determined, is allocated to land, building and improvements based on management's determination of the relative fair values of these assets. The Company assesses the fair value of the lease intangibles based on estimated cash flow projections that utilize appropriate discount rates and available market information. Such inputs are Level 3 in the fair value hierarchy. In valuing an acquired property's intangibles, factors considered by management include an estimate of carrying costs during the expected lease-up periods, such as real estate taxes, insurance, other operating expenses, and estimates of lost rental revenue during the expected lease-up periods based on its evaluation of current market demand. Management also estimates costs to execute similar leases, including leasing commissions and tenant improvements. The values of acquired above-market and below-market leases are recorded based on the present values (using discount rates which reflect the risks associated with the leases acquired) of the difference between the contractual amounts to be received and management's estimate of market lease rates, measured over the terms of the respective leases that management deemed appropriate at the time of the acquisitions. Such valuations include a consideration of the non-cancellable terms of the respective leases, as well as any applicable renewal period(s). The fair values associated with below-market rental renewal options are determined based on the Company's experience and the relevant facts and circumstances at the time of the acquisitions. The values of above-market leases are amortized as a reduction to rental income over the terms of the respective non-cancellable lease periods. The portion of the values of below-market leases are amortized as an increase to rental income over the terms of the respective non-cancellable lease periods. The portion of the values of the leases associated with below-market renewal options that management deemed are likely to be exercised by the tenant are amortized to rental income over such renewal periods. The value of other intangible assets (i.e., origination costs) is recorded to amortization expense over the remaining terms of the respective leases. If a lease were to be terminated prior to its contractual expiration date or not renewed, all unamortized amounts relating to that lease would be recognized in operations at that time. The estimated useful lives of intangible assets or liabilities generally range from one to 38 years. Accounting for Long-Lived Assets and Impairment of Real Estate Owned The Company reviews its real estate portfolio on a quarterly basis to ascertain if there are any indicators of impairment to the value of any of its real estate assets, including deferred costs and intangibles, to determine if there is any need for an impairment charge. In reviewing the portfolio, the Company examines one or more of the following: the type of asset, the current financial statements or other available financial information of the tenant, the economic situation in the area in which the asset is located, the economic situation in the industry in which the tenant is involved, the timeliness of the payments made by the tenant under its lease, and any current communication with the tenant, including property inspection reports. For each real estate asset owned for which indicators of impairment exist, management performs a recoverability test by comparing the sum of the estimated undiscounted future cash flows attributable to the asset to its carrying amount. If the aggregate undiscounted cash flows are less than the asset's carrying amount, an impairment loss is recorded to the extent that the estimated fair value is less than the asset's carrying amount. The estimated fair value is determined using a discounted cash flow model of the expected future cash flows through the useful life of the property. The analysis includes an estimate of the future cash flows that are expected to result from the real estate investment's use and eventual disposition. These cash flows consider factors such as expected future operating income, trends and prospects, the effects of leasing demand, competition and other factors. Properties Held-for-Sale Real estate investments are classified as properties held-for-sale when management determines that the investment meets the applicable criteria. Real estate assets that are classified as held-for-sale are: (i) valued at the lower of carrying amount or the estimated fair value less costs to sell on an individual asset basis; and (ii) not depreciated. Cash and Cash Equivalents All highly liquid investments with original maturities of three months or less when purchased are considered to be cash equivalents. Escrows Real estate taxes, insurance and other escrows aggregating $460,000 and $387,000 at December 31, 2017 and 2016, respectively, are included in Escrow, deposits and other assets and receivables. Depreciation and Amortization Depreciation of buildings is computed on the straight-line method over an estimated useful life of 40 years. Depreciation of building improvements is computed on the straight-line method over the estimated useful life of the improvements. If the Company determines it is the owner of tenant improvements, the amounts funded to construct the tenant improvements are treated as a capital asset and depreciated over the lesser of the remaining lease term or the estimated useful life of the improvements on the straight-line method. Leasehold interest and the related ground lease payments are amortized over the initial lease term of the leasehold position. Depreciation expense (including amortization of a leasehold position, lease origination costs, and capitalized leasing commissions) was $20,993,000, $18,164,000 and $16,384,000 during 2017, 2016 and 2015, respectively. Deferred Financing Costs Mortgage and credit line costs are deferred and amortized on a straight-line basis over the terms of the respective debt obligations, which approximates the effective interest method. At December 31, 2017 and 2016, accumulated amortization of such costs was $2,804,000 and $2,090,000, respectively. The Company presents unamortized deferred financing costs as a direct deduction from the carrying amount of the associated debt liability. Income Taxes The Company is qualified as a real estate investment trust under the applicable provisions of the Internal Revenue Code. Under these provisions, the Company will not be subject to Federal, and generally, state and local income taxes, on amounts distributed to stockholders, provided it distributes at least 90% of its taxable income and meets certain other conditions. The Company follows a two-step approach for evaluating uncertain tax positions. Recognition (step one) occurs when an enterprise concludes that a tax position, based solely on its technical merits, is more-likely-than-not to be sustained upon examination. Measurement (step two) determines the amount of benefit that more-likely-than-not will be realized upon settlement. Derecognition of a tax position that was previously recognized would occur when a company subsequently determines that a tax position no longer meets the more-likely-than-not threshold of being sustained. The use of a valuation allowance as a substitute for derecognition of tax positions is prohibited. The Company has not identified any uncertain tax positions requiring accrual. Concentration of Credit Risk The Company maintains cash accounts at various financial institutions. While the Company attempts to limit any financial exposure, substantially all of its deposit balances exceed federally insured limits. The Company has not experienced any losses on such accounts. The Company's properties are located in 30 states. During 2017, 2016 and 2015, 13.2%, 12.9% and 13.0% of total revenues, respectively, were attributable to real estate investments located in Texas which is the only state in which real estate investments contributed more than 10% to the Company's total revenues. No tenant contributed over 10% to the Company's total revenues during 2017, 2016 and 2015. Segment Reporting Substantially all of the Company's real estate assets, at acquisition, are comprised of real estate owned that is leased to tenants on a long-term basis. Therefore, the Company aggregates real estate assets for reporting purposes and operates in one reportable segment. Stock Based Compensation The fair value of restricted stock grants and restricted stock units, determined as of the date of grant, is amortized into general and administrative expense over the respective vesting period. The deferred compensation to be recognized as expense is net of certain forfeiture and performance assumptions which are re-evaluated quarterly. The Company recognizes the effect of forfeitures when they occur and previously recognized compensation expense shall be reversed in the period the grant or unit is forfeited. For share-based awards with a performance or market measure, we recognize compensation expense over the requisite service period. The requisite service period begins on the date the compensation committee of the Company's Board of Directors authorizes the award, adopts any relevant performance measures and communicates the award. Derivatives and Hedging Activities The Company's objective in using interest rate swaps is to add stability to interest expense. The Company does not use derivatives for trading or speculative purposes. The Company records all derivatives on the consolidated balance sheets at fair value using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of the derivatives. In addition, the Company incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty's nonperformance risk in the fair value measurements. These counterparties are generally large financial institutions engaged in providing a variety of financial services. These institutions generally face similar risks regarding adverse changes in market and economic conditions including, but not limited to, fluctuations in interest rates, exchange rates, equity and commodity prices and credit spreads. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether the Company has elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. Derivatives designated and qualifying as a hedge of the exposure to variability in expected future cash flows are considered cash flow hedges. For derivatives designated as cash flow hedges, the effective portion of changes in the fair value of the derivative is initially reported in accumulated other comprehensive income (outside of earnings) and subsequently reclassified to earnings in the period in which the hedged transaction becomes ineffective. For derivatives not designated as cash flow hedges, changes in the fair value of the derivative are recognized directly in earnings in the period in which the change occurs; however, the Company's policy is to not enter into such transactions. Allowance for Doubtful Accounts The Company maintains an allowance for doubtful accounts for estimated losses resulting from the inability of a tenant to make required rent and other payments. If the financial condition of a specific tenant were to deteriorate, adversely impacting its ability to make payments, additional allowances may be required. Reclassifications Certain amounts previously reported in the consolidated financial statements have been reclassified in the accompanying consolidated financial statements to conform to the current year's presentation. Such reclassifications primarily relate to change the presentation of Gain on sale of real estate, net on the consolidated statement of operations for the years ended December 31, 2016 and 2015. The Company has included a caption for Income before gain on sale of real estate, net, to present gains and losses on sales of properties in accordance with the Securities and Exchange Commission Rule 3-15(a) of Regulation S-X. The change was made for the years ended December 31, 2016 and 2015 because, as prescribed by ASC 360-10-45-5, such gains from sale of real estate were not included as a component of Operating income. Such change was determined to be immaterial to the consolidated financial statements. New Accounting Pronouncements In August 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities, which amends the presentation and disclosure requirements for hedge accounting and changes how companies assess hedge effectiveness. This ASU is intended to more closely align hedge accounting with companies' risk management strategies, simplify the application of hedge accounting, and increase transparency as to the scope and results of hedging programs. The effective date of the standard will be fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018, and early adoption is permitted. The Company is evaluating the new guidance to determine if, and to the extent, it will impact the consolidated financial statements. In February 2017, the FASB issued ASU No. 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, which clarifies the scope and application on the sale or transfer of nonfinancial assets and in substance nonfinancial assets to noncustomers, including partial sales. The effective date of the standard will be fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017, and early adoption is permitted. The Company has evaluated the new guidance and determined there will be no impact on the consolidated financial statements as the Company will be electing the practical expedient which is forward-looking to future sales. In addition, none of the Company's prior sales were partial sales and all were under closed contracts. In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash (a consensus of the Emerging Issues Task Force), which requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amount generally described as restricted cash or restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The effective date of the standard will be fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017, and early adoption is permitted. The Company is evaluating the new guidance to determine if, and to the extent, it will impact the consolidated financial statements. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which changes how entities will measure credit losses for most financial assets and certain other instruments that are not measured at fair value through net income. The guidance replaces the current "incurred loss" model with an "expected loss" approach. The guidance is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted after December 2018. The Company is evaluating the new guidance to determine if, and to the extent, it will impact the consolidated financial statements. In February 2016, the FASB issued ASU No. 2016-02, Leases, which 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 effective date of the standard will be fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018, and early adoption is permitted. The new leases 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 Company is currently evaluating this new standard. The Company anticipates adopting this guidance effective as of January 1, 2019 and will apply the modified retrospective approach. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606), which outlines a new, single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. The new model will require revenue recognition to depict the transfer of promised goods or services to customers in an amount that reflects the consideration a company expects to receive in exchange for those goods or services. The standard can be applied either retrospectively to each period presented or as a cumulative-effect adjustment as of the date of adoption. In July 2015, the FASB issued ASU 2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date, which delays the effective date of ASU 2014-09 by one year. In March 2016, the FASB issued ASU 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net), which is intended to improve the operability and understandability of the implementation guidance on principal versus agent considerations. ASU 2014-09, ASU 2015-14 and ASU 2016-08 are herein collectively referred to as the "New Revenue Recognition Standards". The New Revenue Recognition Standards are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017. Early adoption is permitted but not before annual periods beginning after December 15, 2016. The Company anticipates adopting the New Revenue Recognition Standards effective as of January 1, 2018, and applying the cumulative-effect adoption method. The Company has evaluated its revenue streams, and as they are primarily related to leasing activities which are scoped out of the New Revenue Recognition Standards, it has determined that the adoption of such standards will not have a material impact on the consolidated financial statements and there will be no cumulative translation adjustments upon adoption.

NOTE 2—SIGNIFICANT ACCOUNTING POLICIES

Principles of Consolidation

The consolidated financial statements include the accounts and operations of OLP, its wholly-owned subsidiaries, its joint ventures in which the Company, as defined, has a controlling interest, and variable interest entities ("VIEs") of which the Company is the primary beneficiary. OLP and its consolidated subsidiaries are hereinafter referred to as the "Company". Material intercompany items and transactions have been eliminated in consolidation.

Investment in Joint Ventures and Variable Interest Entities

The Financial Accounting Standards Board, or FASB, provides guidance for determining whether an entity is a VIE. VIEs are defined as entities in which equity investors do not have the characteristics of a controlling financial interest or do not have sufficient equity at risk for the entity to finance its activities without additional subordinated financial support. A VIE is required to be consolidated by its primary beneficiary, which is the party that (i) has the power to control the activities that most significantly impact the VIE's economic performance and (ii) has the obligation to absorb losses, or the right to receive benefits, of the VIE that could potentially be significant to the VIE.

The Company assesses the accounting treatment for each of its investments, including a review of each venture or limited liability company or partnership agreement, to determine the rights of each party and whether those rights are protective or participating. The agreements typically contain certain protective rights, such as the requirement of partner approval to sell, finance or refinance the property and to pay capital expenditures and operating expenditures outside of the approved budget or operating plan. In situations where, among other things, the Company and its partners jointly (i) approve the annual budget, (ii) approve certain expenditures, (iii) prepare or review and approve the joint venture's tax return before filing, and (iv) approve each lease at a property, the Company does not consolidate as the Company considers these to be substantive participation rights that result in shared, joint power over the activities that most significantly impact the performance of the joint venture or property. Additionally, the Company assesses the accounting treatment for any interests pursuant to which the Company may have a variable interest as a lessor. Leases may contain certain protective rights, such as the right of sale and the receipt of certain escrow deposits.

The Company accounts for its investments in unconsolidated joint ventures under the equity method of accounting. All investments in unconsolidated joint ventures have sufficient equity at risk to permit the entity to finance its activities without additional subordinated financial support and, as a group, the holders of the equity at risk have power through voting rights to direct the activities of these ventures. As a result, none of these joint ventures are VIEs. In addition, the Company shares power with its co-managing members over these entities, and therefore the entities are not consolidated. These investments are recorded initially at cost, as investments in unconsolidated joint ventures, and subsequently adjusted for their share of equity in earnings, cash contributions and distributions. None of the joint venture debt is recourse to the Company, subject to standard carve-outs.

The Company periodically reviews its investments in unconsolidated joint ventures for other-than-temporary losses in investment value. Any decline that is not expected to be recovered based on the underlying assets of the investment is considered other than temporary and an impairment charge is recorded as a reduction in the carrying value of the investment. During the three years ended December 31, 2017, there were no impairment charges related to the Company's investments in unconsolidated joint ventures.

The Company has elected to follow the cumulative earnings approach when assessing, for the consolidated statement of cash flows, whether the distribution from the investee is a return of the investor's investment as compared to a return on its investment. The source of the cash generated by the investee to fund the distribution is not a factor in the analysis (that is, it does not matter whether the cash was generated through investee refinancing, sale of assets or operating results). Consequently, the investor only considers the relationship between the cash received from the investee to its equity in the undistributed earnings of the investee, on a cumulative basis, in assessing whether the distribution from the investee is a return on or return of its investment. Cash received from the unconsolidated entity is presumed to be a return on the investment to the extent that, on a cumulative basis, distributions received by the investor are less than its share of the equity in the undistributed earnings of the entity.

Use of Estimates

The preparation of the consolidated financial statements in conformity with U.S. generally accepted accounting principles ("GAAP") requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates.

Management believes that the estimates and assumptions that are most important to the portrayal of the Company's consolidated financial condition and results of operations, in that they require management's most difficult, subjective or complex judgments, form the basis of the accounting policies deemed to be most significant to the Company. These significant accounting policies relate to revenues and the value of the Company's real estate portfolio, including investments in unconsolidated joint ventures. Management believes its estimates and assumptions related to these significant accounting policies are appropriate under the circumstances; however, should future events or occurrences result in unanticipated consequences, there could be a material impact on the Company's future consolidated financial condition or results of operations.

Revenue Recognition

Rental income includes the base rent that each tenant is required to pay in accordance with the terms of their respective leases reported on a straight-line basis over the non-cancelable term of the lease. In determining, in its judgment, that the unbilled rent receivable applicable to each specific property is collectible, management reviews unbilled rent receivables on a quarterly basis and takes into consideration the tenant's payment history and financial condition. Some of the leases provide for increases based on the Consumer Price Index and for additional contingent rental revenue in the form of percentage rents. The percentage rents are based upon the level of sales achieved by the lessee and are recognized once the required sales levels are reached. Certain ground leases provide for rent which can be deferred and paid based on the operating performance of the property; therefore, this rent is recognized as rental income when the operating performance is achieved and the rent is received.

Many of the Company's properties are subject to long-term net leases under which the tenant is typically responsible to pay directly to the vendor the real estate taxes, insurance, utilities and ordinary maintenance and repairs related to the property, and the Company is not the primary obligor with respect to such items. As a result, the revenue and expenses relating to these properties are recorded on a net basis. For certain properties, in addition to contractual base rent, the tenants pay their pro rata share of real estate taxes and operating expenses to the Company. The income and expenses associated with these properties are generally recorded on a gross basis when the Company is the primary obligor. During 2017, 2016 and 2015, the Company recorded reimbursements of expenses of $7,672,000, $6,424,000 and $3,852,000, respectively, which are reported as Tenant reimbursements in the accompanying consolidated statements of income.

Gains and losses on the sale of real estate investments are recorded when the criteria under GAAP have been met.

Fair Value Measurements

The Company measures the fair value of financial instruments based on the assumptions that market participants would use in pricing the asset or liability. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (exit price). As a basis for considering market participant assumptions in fair value measurements, a fair value hierarchy distinguishes between market participant assumptions based on market data obtained from sources independent of the reporting entity and the reporting entity's own assumptions about market participant assumptions. In accordance with the fair value hierarchy, Level 1 assets/liabilities are valued based on quoted prices for identical instruments in active markets, Level 2 assets/liabilities are valued based on quoted prices in active markets for similar instruments, on quoted prices in less active or inactive markets, or on other "observable" market inputs and Level 3 assets/liabilities are valued based on significant "unobservable" market inputs.

Purchase Accounting for Acquisition of Real Estate

In January 2017, the Company adopted ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business, which requires an entity to evaluate whether substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets, and if that requirement is met, the asset group is accounted for as an asset acquisition and not a business combination. Transaction costs incurred with such asset acquisitions are capitalized to real estate assets and depreciated over the respectful useful lives. The Company analyzed the real estate acquisitions made during 2017 and determined the gross assets acquired are concentrated in a single identifiable asset. Prior to January 1, 2017, the Company recorded acquired real estate investments as business combinations when the real estate was occupied, at least in part, at acquisition. Costs directly related to the acquisition of such investments were expensed as incurred.

The Company allocates the purchase price of real estate among land, building, improvements and intangibles, such as the value of above, below and at-market leases, and origination costs associated with in-place leases at the acquisition date. The Company assesses the fair value of the tangible assets of an acquired property by valuing the property as if it were vacant. The value, as determined, is allocated to land, building and improvements based on management's determination of the relative fair values of these assets.

The Company assesses the fair value of the lease intangibles based on estimated cash flow projections that utilize appropriate discount rates and available market information. Such inputs are Level 3 in the fair value hierarchy. In valuing an acquired property's intangibles, factors considered by management include an estimate of carrying costs during the expected lease-up periods, such as real estate taxes, insurance, other operating expenses, and estimates of lost rental revenue during the expected lease-up periods based on its evaluation of current market demand. Management also estimates costs to execute similar leases, including leasing commissions and tenant improvements.

The values of acquired above-market and below-market leases are recorded based on the present values (using discount rates which reflect the risks associated with the leases acquired) of the difference between the contractual amounts to be received and management's estimate of market lease rates, measured over the terms of the respective leases that management deemed appropriate at the time of the acquisitions. Such valuations include a consideration of the non-cancellable terms of the respective leases, as well as any applicable renewal period(s). The fair values associated with below-market rental renewal options are determined based on the Company's experience and the relevant facts and circumstances at the time of the acquisitions. The values of above-market leases are amortized as a reduction to rental income over the terms of the respective non-cancellable lease periods. The portion of the values of below-market leases are amortized as an increase to rental income over the terms of the respective non-cancellable lease periods. The portion of the values of the leases associated with below-market renewal options that management deemed are likely to be exercised by the tenant are amortized to rental income over such renewal periods. The value of other intangible assets (i.e., origination costs) is recorded to amortization expense over the remaining terms of the respective leases. If a lease were to be terminated prior to its contractual expiration date or not renewed, all unamortized amounts relating to that lease would be recognized in operations at that time. The estimated useful lives of intangible assets or liabilities generally range from one to 38 years.

Accounting for Long-Lived Assets and Impairment of Real Estate Owned

The Company reviews its real estate portfolio on a quarterly basis to ascertain if there are any indicators of impairment to the value of any of its real estate assets, including deferred costs and intangibles, to determine if there is any need for an impairment charge. In reviewing the portfolio, the Company examines one or more of the following: the type of asset, the current financial statements or other available financial information of the tenant, the economic situation in the area in which the asset is located, the economic situation in the industry in which the tenant is involved, the timeliness of the payments made by the tenant under its lease, and any current communication with the tenant, including property inspection reports. For each real estate asset owned for which indicators of impairment exist, management performs a recoverability test by comparing the sum of the estimated undiscounted future cash flows attributable to the asset to its carrying amount. If the aggregate undiscounted cash flows are less than the asset's carrying amount, an impairment loss is recorded to the extent that the estimated fair value is less than the asset's carrying amount. The estimated fair value is determined using a discounted cash flow model of the expected future cash flows through the useful life of the property. The analysis includes an estimate of the future cash flows that are expected to result from the real estate investment's use and eventual disposition. These cash flows consider factors such as expected future operating income, trends and prospects, the effects of leasing demand, competition and other factors.

Properties Held-for-Sale

Real estate investments are classified as properties held-for-sale when management determines that the investment meets the applicable criteria. Real estate assets that are classified as held-for-sale are: (i) valued at the lower of carrying amount or the estimated fair value less costs to sell on an individual asset basis; and (ii) not depreciated.

Cash and Cash Equivalents

All highly liquid investments with original maturities of three months or less when purchased are considered to be cash equivalents.

Escrows

Real estate taxes, insurance and other escrows aggregating $460,000 and $387,000 at December 31, 2017 and 2016, respectively, are included in Escrow, deposits and other assets and receivables.

Depreciation and Amortization

Depreciation of buildings is computed on the straight-line method over an estimated useful life of 40 years. Depreciation of building improvements is computed on the straight-line method over the estimated useful life of the improvements. If the Company determines it is the owner of tenant improvements, the amounts funded to construct the tenant improvements are treated as a capital asset and depreciated over the lesser of the remaining lease term or the estimated useful life of the improvements on the straight-line method. Leasehold interest and the related ground lease payments are amortized over the initial lease term of the leasehold position. Depreciation expense (including amortization of a leasehold position, lease origination costs, and capitalized leasing commissions) was $20,993,000, $18,164,000 and $16,384,000 during 2017, 2016 and 2015, respectively.

Deferred Financing Costs

Mortgage and credit line costs are deferred and amortized on a straight-line basis over the terms of the respective debt obligations, which approximates the effective interest method. At December 31, 2017 and 2016, accumulated amortization of such costs was $2,804,000 and $2,090,000, respectively. The Company presents unamortized deferred financing costs as a direct deduction from the carrying amount of the associated debt liability.

Income Taxes

The Company is qualified as a real estate investment trust under the applicable provisions of the Internal Revenue Code. Under these provisions, the Company will not be subject to Federal, and generally, state and local income taxes, on amounts distributed to stockholders, provided it distributes at least 90% of its taxable income and meets certain other conditions.

The Company follows a two-step approach for evaluating uncertain tax positions. Recognition (step one) occurs when an enterprise concludes that a tax position, based solely on its technical merits, is more-likely-than-not to be sustained upon examination. Measurement (step two) determines the amount of benefit that more-likely-than-not will be realized upon settlement. Derecognition of a tax position that was previously recognized would occur when a company subsequently determines that a tax position no longer meets the more-likely-than-not threshold of being sustained. The use of a valuation allowance as a substitute for derecognition of tax positions is prohibited. The Company has not identified any uncertain tax positions requiring accrual.

Concentration of Credit Risk

The Company maintains cash accounts at various financial institutions. While the Company attempts to limit any financial exposure, substantially all of its deposit balances exceed federally insured limits. The Company has not experienced any losses on such accounts.

The Company's properties are located in 30 states. During 2017, 2016 and 2015, 13.2%, 12.9% and 13.0% of total revenues, respectively, were attributable to real estate investments located in Texas which is the only state in which real estate investments contributed more than 10% to the Company's total revenues.

No tenant contributed over 10% to the Company's total revenues during 2017, 2016 and 2015.

Segment Reporting

Substantially all of the Company's real estate assets, at acquisition, are comprised of real estate owned that is leased to tenants on a long-term basis. Therefore, the Company aggregates real estate assets for reporting purposes and operates in one reportable segment.

Stock Based Compensation

The fair value of restricted stock grants and restricted stock units, determined as of the date of grant, is amortized into general and administrative expense over the respective vesting period. The deferred compensation to be recognized as expense is net of certain forfeiture and performance assumptions which are re-evaluated quarterly. The Company recognizes the effect of forfeitures when they occur and previously recognized compensation expense shall be reversed in the period the grant or unit is forfeited. For share-based awards with a performance or market measure, we recognize compensation expense over the requisite service period. The requisite service period begins on the date the compensation committee of the Company's Board of Directors authorizes the award, adopts any relevant performance measures and communicates the award.

Derivatives and Hedging Activities

The Company's objective in using interest rate swaps is to add stability to interest expense. The Company does not use derivatives for trading or speculative purposes.

The Company records all derivatives on the consolidated balance sheets at fair value using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of the derivatives. In addition, the Company incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty's nonperformance risk in the fair value measurements. These counterparties are generally large financial institutions engaged in providing a variety of financial services. These institutions generally face similar risks regarding adverse changes in market and economic conditions including, but not limited to, fluctuations in interest rates, exchange rates, equity and commodity prices and credit spreads.

The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether the Company has elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. Derivatives designated and qualifying as a hedge of the exposure to variability in expected future cash flows are considered cash flow hedges. For derivatives designated as cash flow hedges, the effective portion of changes in the fair value of the derivative is initially reported in accumulated other comprehensive income (outside of earnings) and subsequently reclassified to earnings in the period in which the hedged transaction becomes ineffective. For derivatives not designated as cash flow hedges, changes in the fair value of the derivative are recognized directly in earnings in the period in which the change occurs; however, the Company's policy is to not enter into such transactions.

Allowance for Doubtful Accounts

The Company maintains an allowance for doubtful accounts for estimated losses resulting from the inability of a tenant to make required rent and other payments. If the financial condition of a specific tenant were to deteriorate, adversely impacting its ability to make payments, additional allowances may be required.

Reclassifications

Certain amounts previously reported in the consolidated financial statements have been reclassified in the accompanying consolidated financial statements to conform to the current year's presentation. Such reclassifications primarily relate to change the presentation of Gain on sale of real estate, net on the consolidated statement of operations for the years ended December 31, 2016 and 2015. The Company has included a caption for Income before gain on sale of real estate, net, to present gains and losses on sales of properties in accordance with the Securities and Exchange Commission Rule 3-15(a) of Regulation S-X. The change was made for the years ended December 31, 2016 and 2015 because, as prescribed by ASC 360-10-45-5, such gains from sale of real estate were not included as a component of Operating income. Such change was determined to be immaterial to the consolidated financial statements.

New Accounting Pronouncements

In August 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities, which amends the presentation and disclosure requirements for hedge accounting and changes how companies assess hedge effectiveness. This ASU is intended to more closely align hedge accounting with companies' risk management strategies, simplify the application of hedge accounting, and increase transparency as to the scope and results of hedging programs. The effective date of the standard will be fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018, and early adoption is permitted. The Company is evaluating the new guidance to determine if, and to the extent, it will impact the consolidated financial statements.

In February 2017, the FASB issued ASU No. 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, which clarifies the scope and application on the sale or transfer of nonfinancial assets and in substance nonfinancial assets to noncustomers, including partial sales. The effective date of the standard will be fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017, and early adoption is permitted. The Company has evaluated the new guidance and determined there will be no impact on the consolidated financial statements as the Company will be electing the practical expedient which is forward-looking to future sales. In addition, none of the Company's prior sales were partial sales and all were under closed contracts.

In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash (a consensus of the Emerging Issues Task Force), which requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amount generally described as restricted cash or restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The effective date of the standard will be fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017, and early adoption is permitted. The Company is evaluating the new guidance to determine if, and to the extent, it will impact the consolidated financial statements.

In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which changes how entities will measure credit losses for most financial assets and certain other instruments that are not measured at fair value through net income. The guidance replaces the current "incurred loss" model with an "expected loss" approach. The guidance is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted after December 2018. The Company is evaluating the new guidance to determine if, and to the extent, it will impact the consolidated financial statements.

In February 2016, the FASB issued ASU No. 2016-02, Leases, which 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 effective date of the standard will be fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018, and early adoption is permitted. The new leases 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 Company is currently evaluating this new standard. The Company anticipates adopting this guidance effective as of January 1, 2019 and will apply the modified retrospective approach.

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606), which outlines a new, single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. The new model will require revenue recognition to depict the transfer of promised goods or services to customers in an amount that reflects the consideration a company expects to receive in exchange for those goods or services. The standard can be applied either retrospectively to each period presented or as a cumulative-effect adjustment as of the date of adoption. In July 2015, the FASB issued ASU 2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date, which delays the effective date of ASU 2014-09 by one year. In March 2016, the FASB issued ASU 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net), which is intended to improve the operability and understandability of the implementation guidance on principal versus agent considerations. ASU 2014-09, ASU 2015-14 and ASU 2016-08 are herein collectively referred to as the "New Revenue Recognition Standards".

The New Revenue Recognition Standards are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017. Early adoption is permitted but not before annual periods beginning after December 15, 2016. The Company anticipates adopting the New Revenue Recognition Standards effective as of January 1, 2018, and applying the cumulative-effect adoption method. The Company has evaluated its revenue streams, and as they are primarily related to leasing activities which are scoped out of the New Revenue Recognition Standards, it has determined that the adoption of such standards will not have a material impact on the consolidated financial statements and there will be no cumulative translation adjustments upon adoption.