Getty Realty (GTY) 10-K 2 Mar 17 2016 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2016	Mar. 02, 2017	Jun. 30, 2016
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	FY
Trading Symbol	GTY
Entity Registrant Name	GETTY REALTY CORP /MD/
Entity Central Index Key	1,052,752
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		34,573,340
Entity Public Float			$ 570,105,000

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Real Estate:
Land	$ 474,115	$ 475,784
Buildings and improvements	306,980	304,894
Construction in progress	426	955
Total real estate held for use, gross	781,521	781,633
Less accumulated depreciation and amortization	(120,576)	(107,109)
Real estate held for use, net	660,945	674,524
Real estate held for sale, net	645	1,339
Real estate, net	661,590	675,863
Investment in direct financing leases, net	92,097	94,098
Notes and mortgages receivable	32,737	48,455
Cash and cash equivalents	12,523	3,942
Restricted cash	671	409
Deferred rent receivable	29,966	25,450
Accounts receivable, net of allowance of $2,006 and $2,634, respectively	4,118	2,975
Prepaid expenses and other assets	43,604	45,726
Total assets	877,306	896,918
LIABILITIES AND SHAREHOLDERS' EQUITY:
Borrowings under credit agreement, net	123,801	142,100
Senior unsecured notes, net	174,743	174,689
Mortgage payable, net		303
Environmental remediation obligations	74,516	84,345
Dividends payable	9,742	15,897
Accounts payable and accrued liabilities	63,586	73,023
Total liabilities	446,388	490,357
Commitments and contingencies (notes 2, 3, 4 and 5)
Shareholders' equity:
Preferred stock, $0.01 par value; 20,000,000 shares authorized; unissued
Common stock, $0.01 par value; 50,000,000 shares authorized; 34,393,114 and 33,422,170 shares issued and outstanding, respectively	344	334
Additional paid-in capital	485,659	464,338
Dividends paid in excess of earnings	(55,085)	(58,111)
Total shareholders' equity	430,918	406,561
Total liabilities and shareholders' equity	$ 877,306	$ 896,918

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Allowance on accounts receivable	$ 2,006	$ 2,634
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	20,000,000	20,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	34,393,114	33,422,170
Common stock, shares outstanding	34,393,114	33,422,170

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenues:
Revenues from rental properties	$ 97,939	$ 92,889	$ 82,971
Tenant reimbursements	13,784	14,146	13,777
Interest on notes and mortgages receivable	3,543	3,698	3,145
Total revenues	115,266	110,733	99,893
Operating expenses:
Property costs	22,725	23,649	23,768
Impairments	6,888	11,615	12,938
Environmental	2,578	6,222	4,612
General and administrative	14,154	16,930	15,777
(Recoveries) allowance for uncollectible accounts	(448)	1,053	3,408
Depreciation and amortization	19,170	16,974	10,549
Total operating expenses	65,067	76,443	71,052
Operating income	50,199	34,290	28,841
Gains on dispositions of real estate	6,418	2,272	1,223
Other income, net	2,025	18,301	147
Interest expense	(16,561)	(14,493)	(9,806)
Earnings from continuing operations	42,081	40,370	20,405
Discontinued operations:
Loss from operating activities	(3,465)	(3,299)	(5,982)
(Loss) gains on dispositions of real estate	(205)	339	8,995
(Loss) earnings from discontinued operations	(3,670)	(2,960)	3,013
Net earnings	$ 38,411	$ 37,410	$ 23,418
Basic and diluted earnings per common share:
Earnings from continuing operations	$ 1.23	$ 1.20	$ 0.60
(Loss) earnings from discontinued operations	(0.11)	(0.09)	0.09
Net earnings	$ 1.12	$ 1.11	$ 0.69
Weighted average common shares outstanding:
Basic and diluted	33,806	33,420	33,409

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 38,411,000	$ 37,410,000	$ 23,418,000
Adjustments to reconcile net earnings to net cash flow provided by operating activities:
Depreciation and amortization expense	19,170,000	16,974,000	10,549,000
Impairment charges	12,814,000	17,361,000	21,534,000
(Gains) loss on dispositions of real estate
Continuing operations	(6,418,000)	(2,272,000)	(1,223,000)
Discontinued operations	205,000	(339,000)	(8,995,000)
Deferred rent receivable, net of allowance	(4,516,000)	(4,401,000)	(4,156,000)
(Recoveries) allowance for uncollectible accounts	(448,000)	1,089,000	1,278,000
Amortization of above-market and below-market leases	(569,000)	(1,496,000)	(28,000)
Amortization of credit agreement and senior unsecured notes origination costs	851,000	1,150,000	1,068,000
Accretion expense	4,107,000	4,829,000	3,046,000
Stock-based employee compensation expense	1,426,000	1,090,000	917,000
Changes in assets and liabilities:
Accounts receivable	(2,382,000)	(1,546,000)	(730,000)
Prepaid expenses and other assets	445,000	(189,000)	3,934,000
Environmental remediation obligations	(24,640,000)	(23,485,000)	(16,368,000)
Accounts payable and accrued liabilities	(1,582,000)	3,513,000	(5,007,000)
Net cash flow provided by operating activities	36,874,000	49,688,000	29,237,000
CASH FLOWS FROM INVESTING ACTIVITIES:
Property acquisitions	(7,688,000)	(219,192,000)	(17,098,000)
Capital expenditures	(298,000)	(334,000)	(140,000)
Addition to construction in progress	(406,000)	(687,000)
Proceeds from dispositions of real estate
Continuing operations	3,957,000	5,604,000	4,776,000
Discontinued operations	88,000	1,424,000	15,289,000
Deposits for property acquisitions	(2,206,000)	2,844,000	16,226,000
Change in restricted cash	(262,000)	304,000	287,000
Amortization of investment in direct financing leases	2,001,000	1,666,000	1,382,000
Collection of notes and mortgages receivable	17,532,000	3,647,000	2,783,000
Net cash flow provided by (used in) investing activities	12,718,000	(204,724,000)	23,505,000
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings under credit agreements	8,000,000	186,000,000	3,000,000
Repayments under credit agreements	(27,000,000)	(67,000,000)	(36,000,000)
Borrowings under senior unsecured notes		75,000,000
Payments of capital lease obligations	(236,000)	(249,000)	(255,000)
Repayment of mortgage payable	(400,000)	(50,000)	(50,000)
Payments of cash dividends	(36,231,000)	(35,150,000)	(28,675,000)
Payments of loan origination costs		(2,432,000)
Security deposits received (refunded)	260,000	(187,000)	314,000
Cash paid in settlement of restricted stock units	(290,000)	(65,000)
Proceeds from issuance of common stock, net	14,886,000
Net cash flow (used in) provided by financing activities	(41,011,000)	155,867,000	(61,666,000)
Change in cash and cash equivalents	8,581,000	831,000	(8,924,000)
Cash and cash equivalents at beginning of year	3,942,000	3,111,000	12,035,000
Cash and cash equivalents at end of year	12,523,000	3,942,000	3,111,000
Supplemental disclosures of cash flow information Cash paid during the period for:
Interest	15,707,000	12,643,000	8,735,000
Income taxes	368,000	341,000	316,000
Environmental remediation obligations	17,633,000	19,123,000	13,448,000
Non-cash transactions
Issuance of notes and mortgages receivable related to property dispositions	$ 1,814,000	17,876,000	8,278,000
Mortgage payable, net related to property acquisition			$ 390,000
Accrued construction in progress		$ 268,000

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	NOTE 1. — SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation The consolidated financial statements include the accounts of Getty Realty Corp. and its wholly-owned subsidiaries. The accompanying consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”). We do not distinguish our principal business or our operations on a geographical basis for purposes of measuring performance. We manage and evaluate our operations as a single segment. All significant intercompany accounts and transactions have been eliminated. Use of Estimates, Judgments and Assumptions The consolidated financial statements have been prepared in conformity with GAAP, which requires management to make estimates, judgments and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and revenues and expenses during the period reported. Estimates, judgments and assumptions underlying the accompanying consolidated financial statements include, but are not limited to, real estate, receivables, deferred rent receivable, direct financing leases, depreciation and amortization, impairment of long-lived assets, environmental remediation costs, environmental remediation obligations, litigation, accrued liabilities, income taxes and the allocation of the purchase price of properties acquired to the assets acquired and liabilities assumed. Application of these estimates and assumptions requires exercise of judgment as to future uncertainties and, as a result, actual results could differ materially from these estimates. Reclassifications Beginning in 2016 Tenant reimbursements, which were previously included in Revenue from rental properties, were excluded from Revenue from rental properties. Certain other amounts in prior years’ financial statements have been reclassified to conform to the presentation used in the year ended December 31, 2016. Real Estate Real estate assets are stated at cost less accumulated depreciation and amortization. Upon acquisition of real estate and leasehold interests, we estimate the fair value of acquired tangible assets (consisting of land, buildings and improvements) “as if vacant” and identified intangible assets and liabilities (consisting of leasehold interests, above-market and below-market leases, in-place leases and tenant relationships) and assumed debt. Based on these estimates, we allocate the estimated fair value to the applicable assets and liabilities. Fair value is determined based on an exit price approach, which contemplates the price that would be received from the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. We expense transaction costs associated with business combinations in the period incurred. See Note 12 for additional information regarding property acquisitions. We capitalize direct costs, including costs such as construction costs and professional services, and indirect costs associated with the development and construction of real estate assets while substantive activities are ongoing to prepare the assets for their intended use. The capitalization period begins when development activities are underway and ends when it is determined that the asset is substantially complete and ready for its intended use. When real estate assets are sold or retired, the cost and related accumulated depreciation and amortization is eliminated from the respective accounts and any gain or loss is credited or charged to income. We evaluate real estate sale transactions where we provide seller financing to determine sale and gain recognition in accordance with GAAP. Expenditures for maintenance and repairs are charged to income when incurred. Depreciation and Amortization Depreciation of real estate is computed on the straight-line method based upon the estimated useful lives of the assets, which generally range from 16 to 25 years for buildings and improvements, or the term of the lease if shorter. Asset retirement costs are depreciated over the shorter of the remaining useful lives of USTs or ten years for asset retirement costs related to environmental remediation obligations, which costs are attributable to the group of assets identified at a property. Leasehold interests and in-place leases are amortized over the remaining term of the underlying lease. Direct Financing Leases Income under direct financing leases is included in revenues from rental properties and is recognized over the lease terms using the effective interest rate method which produces a constant periodic rate of return on the net investments in the leased properties. The investments in direct financing leases are increased for interest income earned and amortized over the life of the leases and reduced by the receipt of lease payments. We consider direct financing leases to be past-due or delinquent when a contractually required payment is not remitted in accordance with the provisions of the underlying agreement. We evaluate each account individually and set up an allowance when, based upon current information and events, it is probable that we will be unable to collect all amounts due according to the existing contractual terms, and the amount can be reasonably estimated. We review our direct financing leases at least annually to determine whether there has been an-other-than-temporary decline in the current estimate of residual value of the property. The residual value is our estimate of what we could realize upon the sale of the property at the end of the lease term, based on market information and third-party estimates where available. If this review indicates that a decline in residual value has occurred that is other-than-temporary, we recognize an impairment charge. There were no impairments of any of our direct financing leases during the years ended December 31, 2016 and 2015. When we enter into a contract to sell properties that are recorded as direct financing leases, we evaluate whether we believe it is probable that the disposition will occur. If we determine that the disposition is probable and therefore the property’s holding period is reduced, we record an allowance for credit losses to reflect the change in the estimate of the undiscounted future rents. Accordingly, the net investment balance is written down to fair value. Notes and Mortgages Receivable Notes and mortgages receivable consists of loans originated by us in conjunction with property dispositions and funding provided to tenants in conjunction with property acquisitions. Notes and mortgages receivable are recorded at stated principal amounts. We evaluate the collectability of both interest and principal on each loan to determine whether it is impaired. A loan is considered to be impaired when, based upon current information and events, it is probable that we will be unable to collect all amounts due under the existing contractual terms. When a loan is considered to be impaired, the amount of loss is calculated by comparing the recorded investment to the fair value determined by discounting the expected future cash flows at the loan’s effective interest rate or to the fair value of the underlying collateral, if the loan is collateralized. Interest income on performing loans is accrued as earned. Interest income on impaired loans is recognized on a cash basis. We do not provide for an additional allowance for loan losses based on the grouping of loans as we believe the characteristics of the loans are not sufficiently similar to allow an evaluation of these loans as a group for a possible loan loss allowance. As such, all of our loans are evaluated individually for impairment purposes. There were no impairments related to our notes and mortgages receivable during the years ended December 31, 2016 and 2015. Cash and Cash Equivalents We consider all highly liquid investments with a maturity of three months or less when purchased to be cash equivalents. Our cash and cash equivalents are held in the custody of financial institutions, and these balances, at times, exceed federally insurable limits. Restricted Cash Restricted cash consists of cash that is contractually restricted or held in escrow pursuant to various agreements with counterparties. At December 31, 2016, restricted cash of $671,000 consisted of security deposits received from our tenants. At December 31, 2015, restricted cash of $409,000 consisted of an escrow account established to guarantee our environmental remediation obligations at several of our properties. Revenue Recognition and Deferred Rent Receivable Minimum lease payments from operating leases are recognized on a straight-line basis over the term of the leases. The cumulative difference between lease revenue recognized under this method and the contractual lease payment terms is recorded as deferred rent receivable on our consolidated balance sheets. We reserve for a portion of the recorded deferred rent receivable if circumstances indicate that it is not reasonable to assume that the tenant will make all of its contractual lease payments when due during the current term of the lease. We make estimates of the collectability of our accounts receivable related to revenue from rental properties. We analyze accounts receivable and historical bad debt levels, customer creditworthiness and current economic trends when evaluating the adequacy of the allowance for doubtful accounts. Additionally, with respect to tenants in bankruptcy, we estimate the expected recovery through bankruptcy claims and increase the allowance for amounts deemed uncollectible. If our assumptions regarding the collectability of accounts receivable prove incorrect, we could experience write-offs of the accounts receivable or deferred rent receivable in excess of our allowance for doubtful accounts. The present value of the difference between the fair market rent and the contractual rent for above-market and below-market leases at the time properties are acquired is amortized into revenues from rental properties over the remaining terms of the in-place leases. Lease termination fees are recognized as other income when earned upon the termination of a tenant’s lease and relinquishment of space in which we have no further obligation to the tenant. Impairment of Long-Lived Assets Assets are written down to fair value when events and circumstances indicate that the assets might be impaired and the projected undiscounted cash flows estimated to be generated by those assets are less than the carrying amount of those assets. Assets held for disposal are written down to fair value less estimated disposition costs. We recorded impairment charges aggregating $12,814,000, $17,361,000 and $21,534,000 for the years ended December 31, 2016, 2015 and 2014, respectively, in continuing and discontinued operations. Our estimated fair values, as they relate to property carrying values were primarily based upon (i) estimated sales prices from third-party offers based on signed contracts, letters of intent or indicative bids, for which we do not have access to the unobservable inputs used to determine these estimated fair values, and/or consideration of the amount that currently would be required to replace the asset, as adjusted for obsolescence (this method was used to determine $3,041,000 of the $12,814,000 in impairments recognized during the year ended December 31, 2016) and (ii) discounted cash flow models (this method was used to determine $1,660,000 of the $12,814,000 in impairments recognized during the year ended December 31, 2016). During the year ended December 31, 2016, we recorded $8,113,000 of the $12,814,000 in impairments recognized due to the accumulation of asset retirement costs as a result of changes in estimates associated with our estimated environmental liabilities which increased the carrying value of certain properties in excess of their fair value. The impairment charges recorded during the years ended December 31, 2016 and 2015, were attributable to the effect of adding asset retirement costs due to changes in estimates associated with our environmental liabilities, which increased the carrying value of certain properties in excess of their fair value, reductions in estimated undiscounted cash flows expected to be received during the assumed holding period for certain of our properties and reductions in estimated sales prices from third-party offers based on signed contracts, letters of intent or indicative bids for certain of our properties. The estimated fair value of real estate is based on the price that would be received from the sale of the property in an orderly transaction between market participants at the measurement date. In general, we consider multiple internal valuation techniques when measuring the fair value of a property, all of which are based on unobservable inputs and assumptions that are classified within Level 3 of the Fair Value Hierarchy. These unobservable inputs include assumed holding periods ranging up to 15 years, assumed average rent increases of 2.0% annually, income capitalized at a rate of 8.0% and cash flows discounted at a rate of 7.0%. These assessments have a direct impact on our net income because recording an impairment loss results in an immediate negative adjustment to net income. The evaluation of anticipated cash flows is highly subjective and is based in part on assumptions regarding future rental rates and operating expenses that could differ materially from actual results in future periods. Where properties held for use have been identified as having a potential for sale, additional judgments are required related to the determination as to the appropriate period over which the projected undiscounted cash flows should include the operating cash flows and the amount included as the estimated residual value. This requires significant judgment. In some cases, the results of whether impairment is indicated are sensitive to changes in assumptions input into the estimates, including the holding period until expected sale. Deferred Gain On August 3, 2015, we terminated our unitary triple-net lease (the “Ramoco Lease”) with Hanuman Business, Inc. (d/b/a “Ramoco”), and sold to Ramoco affiliates 48 of the 61 properties that had been subject to the Ramoco Lease. The total consideration for the 48 properties we sold to Ramoco affiliates, including a seller financing mortgage of $13,900,000, was $15,000,000. In accordance with ASC 360-20, Property, Plant and Equipment—Real Estate Sales, we evaluated the accounting for the gain on sales of these assets, noting that the buyer’s initial investment did not represent the amount required for recognition of the gain by the full accrual method. Accordingly, we recorded a deferred gain of $3,900,000 related to the Ramoco sale. The deferred gain was recorded in accounts payable and accrued liabilities on our balance sheet at December 31, 2015. On April 28, 2016, Ramoco affiliates repaid the entire seller financing mortgage and, as a result, the deferred gain was recognized in our consolidated statements of operations for the year ended December 31, 2016. Fair Value Hierarchy The preparation of consolidated financial statements in accordance with GAAP requires management to make estimates of fair value that affect the reported amounts of assets and liabilities and disclosure of assets and liabilities at the date of the consolidated financial statements and revenues and expenses during the period reported using a hierarchy (the “Fair Value Hierarchy”) that prioritizes the inputs to valuation techniques used to measure the fair value. The Fair Value Hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The levels of the Fair Value Hierarchy are as follows: “Level 1” – inputs that reflect unadjusted quoted prices in active markets for identical assets or liabilities that we have the ability to access at the measurement date; “Level 2” – inputs other than quoted prices that are observable for the asset or liability either directly or indirectly, including inputs in markets that are not considered to be active; and “Level 3” – inputs that are unobservable. Certain types of assets and liabilities are recorded at fair value either on a recurring or non-recurring basis. Assets required or elected to be marked-to-market and reported at fair value every reporting period are valued on a recurring basis. Other assets not required to be recorded at fair value every period may be recorded at fair value if a specific provision or other impairment is recorded within the period to mark the carrying value of the asset to market as of the reporting date. Such assets are valued on a non-recurring basis. We have mutual fund assets that are measured at fair value on a recurring basis using Level 1 inputs. We have a Supplemental Retirement Plan for executives. The amounts held in trust under the Supplemental Retirement Plan using Level 2 inputs may be used to satisfy claims of general creditors in the event of our or any of our subsidiaries’ bankruptcy. We have liability to the executives participating in the Supplemental Retirement Plan for the participant account balances equal to the aggregate of the amount invested at the executives’ direction and the income earned in such mutual funds. We have certain real estate assets that are measured at fair value on a non-recurring basis using Level 3 inputs as of December 31, 2016 and 2015, of $780,000 and $1,264,000, respectively, where impairment charges have been recorded. Due to the subjectivity inherent in the internal valuation techniques used in estimating fair value, the amounts realized from the sale of such assets may vary significantly from these estimates. The following summarizes as of December 31, 2016, our assets and liabilities measured at fair value on a recurring basis by level within the Fair Value Hierarchy: (in thousands) Level 1 Level 2 Level 3 Total Assets: Mutual funds $ 565 $ — $ — $ 565 Liabilities: Deferred compensation $ — $ 565 $ — $ 565 The following summarizes as of December 31, 2015, our assets and liabilities measured at fair value on a recurring basis by level within the Fair Value Hierarchy: (in thousands) Level 1 Level 2 Level 3 Total Assets: Mutual funds $ 888 $ — $ — $ 888 Liabilities: Deferred compensation $ — $ 888 $ — $ 888 Fair Value Disclosure of Financial Instruments All of our financial instruments are reflected in the accompanying consolidated balance sheets at amounts which, in our estimation based upon an interpretation of available market information and valuation methodologies, reasonably approximate their fair values, except those separately disclosed in the notes to our consolidated financial statements. Environmental Remediation Obligations We record the fair value of a liability for an environmental remediation obligation as an asset and liability when there is a legal obligation associated with the retirement of a tangible long-lived asset and the liability can be reasonably estimated. Environmental remediation obligations are estimated based on the level and impact of contamination at each property. The accrued liability is the aggregate of the best estimate of the fair value of cost for each component of the liability. The accrued liability is net of recoveries of environmental costs from state UST remediation funds with respect to both past and future environmental spending based on estimated recovery rates developed from prior experience with the funds. Net environmental liabilities are currently measured based on their expected future cash flows which have been adjusted for inflation and discounted to present value. We accrue for environmental liabilities that we believe are allocable to other potentially responsible parties if it becomes probable that the other parties will not pay their environmental remediation obligations. Litigation Legal fees related to litigation are expensed as legal services are performed. We provide for litigation accruals, including certain litigation related to environmental matters, when it is probable that a liability has been incurred and a reasonable estimate of the liability can be made. If the estimate of the liability can only be identified as a range, and no amount within the range is a better estimate than any other amount, the minimum of the range is accrued for the liability. We accrue our share of environmental litigation liabilities based on our assumptions of the ultimate allocation method and share that will be used when determining our share of responsibility. Income Taxes We and our subsidiaries file a consolidated federal income tax return. Effective January 1, 2001, we elected to qualify, and believe we are operating so as to qualify, as a REIT for federal income tax purposes. Accordingly, we generally will not be subject to federal income tax on qualifying REIT income, provided that distributions to our shareholders equal at least the amount of our taxable income as defined under the Internal Revenue Code. We accrue for uncertain tax matters when appropriate. The accrual for uncertain tax positions is adjusted as circumstances change and as the uncertainties become more clearly defined, such as when audits are settled or exposures expire. Tax returns for the years 2013, 2014 and 2015, and tax returns which will be filed for the year ended 2016, remain open to examination by federal and state tax jurisdictions under the respective statute of limitations. New Accounting Pronouncements In May 2014, the FASB issued Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Customers (Topic 606) In August 2014, the FASB issued ASU 2014-15, Presentation of Financial Statements – Going Concern: Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) On March 30, 2016, the FASB issued ASU 2016-09, Compensation—Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting On May 9, 2016, the FASB issued ASU 2016-12, Narrow-Scope Improvements and Practical Expedients On June 16, 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurements of Credit Losses on Financial Instruments In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash In January 2017, the FASB issued ASU 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business

Leases

Leases	12 Months Ended
	Dec. 31, 2016
Leases [Abstract]
Leases	NOTE 2. — LEASES As of December 31, 2016, we owned 740 properties and leased 89 properties from third-party landlords. Our 829 properties are located in 23 states across the United States and Washington, D.C. Substantially all of our properties are leased on a triple-net basis primarily to petroleum distributors, convenience store retailers and, to a lesser extent, to individual operators. Generally, our tenants supply fuel and either operate our properties directly or sublet our properties to operators who operate their convenience stores, gasoline stations, automotive repair service facilities or other businesses at our properties. Our triple-net tenants are responsible for the payment of all taxes, maintenance, repairs, insurance and other operating expenses relating to our properties, and are also responsible for environmental contamination occurring during the terms of their leases and in certain cases also for environmental contamination that existed before their leases commenced. See Note 5 for additional information regarding environmental obligations. Substantially all of our tenants’ financial results depend on the sale of refined petroleum products and, to a lesser extent, convenience store sales or rental income from their subtenants. As a result, our tenants’ financial results are highly dependent on the performance of the petroleum marketing industry, which is highly competitive and subject to volatility. During the terms of our leases, we monitor the credit quality of our triple-net tenants by reviewing their published credit rating, if available, reviewing publicly available financial statements, or reviewing financial or other operating statements which are delivered to us pursuant to applicable lease agreements, monitoring news reports regarding our tenants and their respective businesses, and monitoring the timeliness of lease payments and the performance of other financial covenants under their leases. Revenues from rental properties included in continuing operations for the years ended December 31, 2016, 2015 and 2014 were $97,939,000, $92,889,000 and $82,971,000, respectively. Rental income contractually due or received from our tenants in revenues from rental properties included in continuing operations was $94,522,000, $88,358,000 and $77,720,000 for the years ended December 31, 2016, 2015 and 2014, respectively. In accordance with GAAP, we recognize rental revenue in amounts which vary from the amount of rent contractually due or received during the periods presented. As a result, revenues from rental properties include non-cash adjustments recorded for deferred rental revenue due to the recognition of rental income on a straight-line basis over the current lease term, the net amortization of above-market and below-market leases, rental income recorded under direct financing leases using the effective interest method which produces a constant periodic rate of return on the net investments in the leased properties and the amortization of deferred lease incentives (the “Revenue Recognition Adjustments”). Revenue Recognition Adjustments included in revenues from rental properties in continuing operations were $3,417,000, $4,531,000 and $5,251,000 for the years ended December 2016, 2015 and 2014, respectively. We provide reserves for a portion of the recorded deferred rent receivable if circumstances indicate that a tenant will not make all of its contractual lease payments during the current lease term. Our assessments and assumptions regarding the recoverability of the deferred rent receivable are reviewed on an ongoing basis and such assessments and assumptions are subject to change. There were no deferred rent receivable reserves at December 31, 2016 and 2015, respectively. Tenant reimbursements, which consist of real estate taxes and other municipal charges paid by us which were reimbursable by our tenants pursuant to the terms of triple-net lease agreements, included in continuing operations were $13,784,000, $14,146,000 and $13,777,000 for the years ended December 31, 2016, 2015 and 2014, respectively. We incurred $148,000, $120,000 and $60,000 of lease origination costs for the years ended December 31, 2016, 2015 and 2014, respectively. This deferred expense is recognized on a straight-line basis as amortization expense in our consolidated statements of operations over the terms of the various leases. The components of the $92,097,000 investment in direct financing leases as of December 31, 2016, are minimum lease payments receivable of $167,064,000 plus unguaranteed estimated residual value of $13,979,000 less unearned income of $88,946,000. The components of the $94,098,000 investment in direct financing leases as of December 31, 2015, are minimum lease payments receivable of $179,372,000 plus unguaranteed estimated residual value of $13,979,000 less unearned income of $99,253,000. Future contractual minimum annual rentals receivable from our tenants, which have terms in excess of one year as of December 31, 2016, are as follows (in thousands): YEAR ENDING DECEMBER 31, OPERATING DIRECT TOTAL 2017 $ 81,784 $ 12,622 $ 94,406 2018 81,508 12,872 94,380 2019 81,346 13,079 94,425 2020 76,936 13,375 90,311 2021 71,523 13,552 85,075 Thereafter $ 569,111 $ 101,564 $ 670,675 We have obligations to lessors under non-cancelable operating leases which have terms in excess of one year, principally for convenience stores and gasoline stations. The leased properties have a remaining lease term averaging approximately 11 years, including renewal options. Future minimum annual rentals payable under such leases, excluding renewal options, are as follows: 2017 — $6,246,000, 2018 — $5,548,000, 2019 — $4,620,000, 2020 — $3,494,000, 2021 — $2,573,000 and $3,277,000 thereafter. Rent expense, substantially all of which consists of minimum rentals on non-cancelable operating leases, amounted to $5,376,000, $5,918,000 and $6,088,000 for the years ended December 31, 2016, 2015 and 2014, respectively, and is included in property costs using the straight-line method. Rent received under subleases for the years ended December 31, 2016, 2015 and 2014 was $9,153,000, $9,653,000 and $10,358,000, respectively. Major Tenants As of December 31, 2016, we had three significant tenants by revenue: • We leased 166 convenience store and gasoline station properties in three separate unitary leases and three stand-alone leases to subsidiaries of Global Partners LP (NYSE: GLP) (“Global Partners”). Two of these leases were assigned to subsidiaries of Global Partners in June 2015 by our former tenants, White Oak Petroleum, LLC and Big Apple Petroleum Realty, LLC (both affiliates of Capitol Petroleum Group, LLC). In the aggregate, our leases with subsidiaries of Global Partners represented 21% of our total revenues for the years ended December 31, 2016 and 2015. All of our unitary leases with subsidiaries of Global Partners are guaranteed by the parent company. • We leased 77 convenience store and gasoline station properties pursuant to three separate unitary leases to Apro, LLC (d/b/a “United Oil”). In the aggregate, our leases with United Oil represented 15% and 9% of our total revenues for the years ended December 31, 2016 and 2015, respectively. See Note 12 for additional information regarding the United Oil Transaction. See Item 9B in this Form 10-K for selected combined audited financial data of United Oil. • We leased 79 convenience store and gasoline station properties pursuant to three separate unitary leases to subsidiaries of Chestnut Petroleum Dist., Inc. (“Chestnut Petroleum”). In the aggregate, our leases with subsidiaries of Chestnut Petroleum represented 15% and 16% of our total revenues for the years ended December 31, 2016 and 2015, respectively. The largest of these unitary leases, covering 57 of our properties, is guaranteed by the parent company, its principals and numerous Chestnut Petroleum affiliates. Marketing and the Master Lease As of December 31, 2016, 391 of the properties we own or lease, were previously leased to Getty Petroleum Marketing Inc. (“Marketing”) pursuant to a master lease (the “Master Lease”). In December 2011, Marketing filed for Chapter 11 bankruptcy protection in the U.S. Bankruptcy Court. The Master Lease was terminated effective April 30, 2012, and in July 2012, the Bankruptcy Court approved Marketing’s Plan of Liquidation and appointed a trustee (the “Liquidating Trustee”) to oversee liquidation of the Marketing estate (the “Marketing Estate”). As part of Marketing’s bankruptcy proceeding, we maintained significant pre-petition and post-petition unsecured claims against Marketing. On March 3, 2015, we entered into a settlement agreement with the Liquidating Trustee of the Marketing Estate to resolve claims asserted by us in Marketing’s bankruptcy case (the “Settlement Agreement”). The Settlement Agreement was approved by an order of the U.S. Bankruptcy Court, and, on April 22, 2015, we received a distribution from the Marketing Estate of $6,800,000 on account of our general unsecured claims. The Settlement Agreement also resolved a dispute relating to the balance of payment due to us pursuant to our agreement to fund a lawsuit that was brought by the Liquidating Trustee against Lukoil Americas Corporation and related entities and individuals for the benefit of Marketing’s creditors. As a result, on April 22, 2015, we also received an additional distribution of $550,000 from the Marketing Estate in full resolution of the Litigation Funding Agreement dispute. On October 19, 2015, the U.S. Bankruptcy Court entered a final decree closing the bankruptcy case of the Marketing Estate. As a result, on November 3, 2015, we received a final distribution from the Marketing Estate of $10,800,000 on account of our general unsecured claims. The $18,177,000 received from the Marketing Estate for the year ended December 31, 2015, is included in other income on our consolidated statements of operations. We do not expect to receive any further distributions from the Marketing Estate. As of December 31, 2016, we have entered into long-term triple-net leases with petroleum distributors for 15 separate property portfolios comprising 350 properties in the aggregate and 24 properties leased as single unit triple-net leases, that were previously leased to Marketing. The long-term triple-net leases with petroleum distributors are unitary triple-net lease agreements generally with an initial term of 15 to 20 years and options for successive renewal terms of up to 20 years. Rent is scheduled to increase at varying intervals during both the initial and renewal terms of our leases. Several of the leases provide for additional rent based on the aggregate volume of fuel sold. In addition, the majority of the leases require the tenants to make capital expenditures at our properties, substantially all of which are related to the replacement of USTs that are owned by our tenants. As of December 31, 2016, we have a remaining commitment to fund up to $10,231,000 in the aggregate with our tenants for our portion of such capital expenditures. Our commitment provides us with the option to either reimburse our tenants, or to offset rent when these capital expenditures are made. This deferred expense is recognized on a straight-line basis as a reduction of rental revenue in our consolidated statements of operations over the terms of the various leases. As part of the triple-net leases for properties previously leased to Marketing, we transferred title of the USTs to our tenants, and the obligation to pay for the retirement and decommissioning or removal of USTs at the end of their useful lives or earlier if circumstances warranted was fully or partially transferred to our new tenants. We remain contingently liable for this obligation in the event that our tenants do not satisfy their responsibilities. Accordingly, through December 31, 2016, we removed $13,769,000 of asset retirement obligations and $10,808,000 of net asset retirement costs related to USTs from our balance sheet. The cumulative net amount of $2,961,000 is recorded as deferred rental revenue and will be recognized on a straight-line basis as additional revenues from rental properties over the terms of the various leases. NECG Lease Restructuring On May 1, 2012, we entered into a lease with NECG Holdings Corp (“NECG”) covering 84 properties formerly leased to Marketing in Connecticut, Massachusetts and Rhode Island (the “NECG Lease”). Eviction proceedings against a holdover group of former subtenants who continued to occupy properties subject to the NECG Lease had a material adverse impact on NECG’s operations and profitability. On January 27, 2015, the Connecticut Supreme Court, in a written opinion, affirmed the Superior Court rulings in favor of NECG and us. As a result, we or NECG regained possession of all of the locations that were still subject to appeal. We had previously entered into a lease modification agreement with NECG which deferred a portion of NECG’s rent due to us and allowed us to remove properties from the NECG Lease. As a result, as of December 31, 2016, there were three properties remaining in the NECG Lease. On January 6, 2017, the three remaining properties subject to the NECG Lease were re-leased to an existing tenant and the NECG Lease was terminated.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	NOTE 3. — COMMITMENTS AND CONTINGENCIES Credit Risk In order to minimize our exposure to credit risk associated with financial instruments, we place our temporary cash investments, if any, with high credit quality institutions. Temporary cash investments, if any, are currently held in an overnight bank time deposit with JPMorgan Chase Bank, N.A. and these balances, at times, exceed federally insurable limits. Legal Proceedings We are subject to various legal proceedings and claims which arise in the ordinary course of our business. As of December 31, 2016 and 2015, we had accrued $11,768,000 and $11,265,000, respectively, for certain of these matters which we believe were appropriate based on information then currently available. We have recorded provisions for litigation losses aggregating $801,000 and $374,000 for certain of these matters during the years ended December 31, 2016 and 2015, respectively. We are unable to estimate ranges in excess of the amount accrued with any certainty for these matters. It is possible that our assumptions regarding the ultimate allocation method and share of responsibility that we used to allocate environmental liabilities may change, which may result in our providing an accrual, or adjustments to the amounts recorded, for environmental litigation accruals. Matters related to our former Newark, New Jersey Terminal and the Lower Passaic River and MTBE litigations in the states of New Jersey and Pennsylvania, in particular, could cause a material adverse effect on our business, financial condition, results of operations, liquidity, ability to pay dividends or stock price. Matters related to our former Newark, New Jersey Terminal and the Lower Passaic River In September 2003, we received a directive (the “Directive”) issued by the New Jersey Department of Environmental Protection (“NJDEP”) under the New Jersey Spill Compensation and Control Act. The Directive indicated that we are one of approximately 66 potentially responsible parties for alleged natural resource damages resulting from the discharges of hazardous substances along the lower Passaic River (the “Lower Passaic River”). The Directive provides, among other things, that the named recipients must conduct an assessment of the natural resources that have been injured by discharges into the Lower Passaic River and must implement interim compensatory restoration for the injured natural resources. The NJDEP alleges that our liability arises from alleged discharges originating from our former Newark, New Jersey Terminal site (which was sold in October 2013). We responded to the Directive by asserting that we are not liable. There has been no material activity and/or communications by the NJDEP with respect to the Directive since early after its issuance. In May 2007, the United States Environmental Protection Agency (“EPA”) entered into an Administrative Settlement Agreement and Order on Consent (“AOC”) with over 70 parties to perform a Remedial Investigation and Feasibility Study (“RI/FS”) for a 17-mile stretch of the Lower Passaic River in New Jersey. The RI/FS is intended to address the investigation and evaluation of alternative remedial actions with respect to alleged damages to the Lower Passaic River. Most of the parties to the AOC, including us, are also members of a Cooperating Parties Group (“CPG”). The CPG agreed to an interim allocation formula for purposes of allocating the costs to complete the RI/FS among its members, with the understanding that this agreed-upon allocation formula is not binding on the parties in terms of any potential liability for the costs to remediate the Lower Passaic River. The CPG submitted to the EPA its draft RI/FS in 2015. The draft RI/FS set forth various alternatives for remediating the entire 17-mile stretch of the Lower Passaic River, and provides that cost estimate for the preferred remedial action presented therein is in the range of approximately $483,000,000 to $725,000,000. The EPA is still evaluating the draft RI/FS report submitted by the CPG. In addition to the RI/FS activities, other actions relating to the investigation and/or remediation of the Lower Passaic River have proceeded as follows. First, in June 2012, certain members of the CPG entered into an Administrative Settlement Agreement and Order on Consent (“10.9 AOC”) effective June 18, 2012, to perform certain remediation activities, including removal and capping of sediments at the river mile 10.9 area and certain testing. The EPA also issued a Unilateral Order to Occidental Chemical Corporation (“Occidental”) directing Occidental to participate and contribute to the cost of the river mile 10.9 work. Concurrent with the CPG’s work on the RI/FS, on April 11, 2014, the EPA issued a draft Focused Feasibility Study (“FFS”) with proposed remedial alternatives to remediate the lower 8-miles of the 17-mile stretch of the Lower Passaic River. The FFS was subject to public comments and objections, and on March 4, 2016, the EPA issued its Record of Decision (“ROD”) for the lower 8-miles selecting a remedy that would involve bank-to-bank dredging and installing an engineered cap with an estimated cost of $1,380,000,000. On March 31, 2016, we and more than 100 other potentially responsible parties received from the EPA a “Notice of Potential Liability and Commencement of Negotiations for Remedial Design” (“Notice”), which informed the recipients that the EPA intends to seek an Administrative Order on Consent and Settlement Agreement with Occidental for remedial design of the remedy selected in the ROD, after which the EPA plans to begin negotiations with “major” potentially responsible parties for implementation and/or payment of the selected remedy. The Notice also stated that the EPA believes that some of the potentially responsible parties and other parties not yet identified as potentially responsible parties will be eligible for a cash out settlement with the EPA. On October 5, 2016, the EPA announced that it had entered into a settlement agreement with Occidental which requires that Occidental perform the remedial design (which is expected to take four (4) years to complete) for the remedy selected for the lower 8-miles of the Lower Passaic River. Many uncertainties remain regarding how the EPA intends to implement the ROD. We anticipate that performance of the EPA’s selected remedy will be subject to future negotiations, potential enforcement proceedings and/or possible litigation. The RI/FS, AOC, 10.9 AOC and Notice do not obligate us to fund or perform remedial action contemplated by either the ROD or RI/FS and do not resolve liability issues for remedial work or the restoration of or compensation for alleged natural resource damages to the Lower Passaic River, which are not known at this time. Our ultimate liability, if any, in the pending and possible future proceedings pertaining to the Lower Passaic River is uncertain and subject to numerous contingencies which cannot be predicted and the outcome of which are not yet known. MTBE Litigation – State of New Jersey We are defending against a lawsuit brought by various governmental agencies of the State of New Jersey, including the NJDEP alleging various theories of liability due to contamination of groundwater with methyl tertiary butyl ether (a fuel derived from methanol, commonly referred to as “MTBE”) involving multiple locations throughout the State of New Jersey (the “New Jersey MDL Proceedings”). The complaint names as defendants approximately 50 petroleum refiners, manufacturers, distributors and retailers of MTBE or gasoline containing MTBE. The State of New Jersey is seeking reimbursement of significant clean-up and remediation costs arising out of the alleged release of MTBE containing gasoline in the State of New Jersey and is asserting various natural resource damage claims as well as liability against the owners and operators of gasoline station properties from which the releases occurred. Several of the named defendants have already settled the case against them. These cases have been transferred to the United States District Court for the District of New Jersey for pre-trial proceedings and trial, although a trial date has not yet been set. We continue to engage in settlement negotiations and a dialogue with the plaintiff’s counsel to educate them on the unique role of the Company and our business as compared to other defendants in the litigation, and with respect to certain facts applicable to our activities and gasoline stations, and affirmative defenses available to us, which we believe have not been sufficiently developed in the proceedings. In addition, we are pursuing claims for reimbursement of monies expended in the defense and settlement of certain MTBE cases under pollution insurance policies previously obtained by us and Marketing and under which we believe we are entitled to coverage, however, we have not yet confirmed whether and to what extent such coverage may actually be available. Although the ultimate outcome of the New Jersey MDL Proceedings cannot be ascertained at this time, we believe it is probable that this litigation will be resolved in a manner that is unfavorable to us. We are unable to estimate the range of loss in excess of the amount accrued with certainty for the New Jersey MDL Proceedings as we do not believe that plaintiffs’ settlement proposal is realistic and there remains uncertainty as to the allegations in this case as they relate to us, our defenses to the claims, our rights to indemnification or contribution from other parties and the aggregate possible amount of damages for which we may be held liable. It is possible that losses related to the New Jersey MDL Proceedings in excess of the amounts accrued as of December 31, 2016, could cause a material adverse effect on our business, financial condition, results of operations, liquidity, ability to pay dividends or stock price. MTBE Litigation – State of Pennsylvania On July 7, 2014, our subsidiary, Getty Properties Corp., was served with a complaint filed by the Commonwealth of Pennsylvania (the “State”) in the Court of Common Pleas, Philadelphia County relating to alleged statewide MTBE contamination in Pennsylvania (the “Complaint”). The Complaint names us and more than 50 other defendants, including Exxon Mobil, various BP entities, Chevron, Citgo, Gulf, Lukoil Americas, Getty Petroleum Marketing Inc., Marathon, Hess, Shell Oil, Texaco, Valero, as well as other smaller petroleum refiners, manufacturers, distributors and retailers of MTBE or gasoline containing MTBE. The Complaint seeks compensation for natural resource damages and for injuries sustained as a result of “defendants’ unfair and deceptive trade practices and acts in the marketing of MTBE and gasoline containing MTBE.” The plaintiffs also seek to recover costs paid or incurred by the State to detect, treat and remediate MTBE from public and private water wells and groundwater. The plaintiffs assert causes of action against all defendants based on multiple theories, including strict liability – defective design; strict liability – failure to warn; public nuisance; negligence; trespass; and violation of consumer protection law. The case was filed in the Court of Common Pleas, Philadelphia County, but was removed by defendants to the United States District Court for the Eastern District of Pennsylvania and then transferred to the United States District Court for the Southern District of New York so that it may be managed as part of the ongoing MTBE MDL. Plaintiffs have recently filed a Second Amended Complaint naming additional defendants and adding factual allegations intended to bolster their claims against the defendants. We have joined with other defendants in the filing of a motion to dismiss the claims against us. This motion is pending with the Court. We intend to defend vigorously the claims made against us. Our ultimate liability, if any, in this proceeding is uncertain and subject to numerous contingencies which cannot be predicted and the outcome of which are not yet known.

Credit Agreement and Senior Uns

Credit Agreement and Senior Unsecured Notes	12 Months Ended
	Dec. 31, 2016
Debt Disclosure [Abstract]
Credit Agreement and Senior Unsecured Notes	NOTE 4. — CREDIT AGREEMENT AND SENIOR UNSECURED NOTES Credit Agreement On June 2, 2015, we entered into a $225,000,000 senior unsecured credit agreement (the “Credit Agreement”) with a group of banks led by Bank of America, N.A. (the “Bank Syndicate”). The Credit Agreement consists of a $175,000,000 revolving facility (the “Revolving Facility”), which is scheduled to mature in June 2018 and a $50,000,000 term loan (the “Term Loan”), which is scheduled to mature in June 2020. Subject to the terms of the Credit Agreement and our continued compliance with its provisions, we have the option to (a) extend the term of the Revolving Facility for one additional year to June 2019 and (b) increase by $75,000,000 the amount of the Revolving Facility to $250,000,000. The Credit Agreement incurs interest and fees at various rates based on our net debt to EBITDA ratio (as defined in the Credit Agreement) at the end of each quarterly reporting period. The Revolving Facility permits borrowings at an interest rate equal to the sum of a base rate plus a margin of 0.95% to 2.25% or a LIBOR rate plus a margin of 1.95% to 3.25%. The annual commitment fee on the undrawn funds under the Revolving Facility is 0.25% to 0.30%. The Term Loan bears interest at a rate equal to the sum of a base rate plus a margin of 0.90% to 2.20% or a LIBOR rate plus a margin of 1.90% to 3.20%. The Credit Agreement does not provide for scheduled reductions in the principal balance prior to its maturity. As of December 31, 2016 and 2015, borrowings under the Revolving Facility were $75,000,000 and $94,000,000, respectively, and borrowings under the Term Loan were $50,000,000. The interest rate on Credit Agreement borrowings at December 31, 2016, was approximately 3.10% per annum. In April 2015, the FASB issued guidance ASU 2015-03, which amends Topic 835, Other Presentation Matters. The amendments in ASU 2015-03 require that debt issuance costs be reported on the balance sheet as a direct reduction of the face amount of the debt instrument they relate to, and should not be classified as a deferred charge, as was previously required under the Accounting Standards Codification. We adopted ASU 2015-03 retrospectively as of January 1, 2016. As of December 31, 2016 and 2015, we had $1,199,000 and $1,900,000, respectively, of debt issuance costs included within borrowings under credit agreement. The Credit Agreement contains customary financial covenants such as availability, leverage and coverage ratios and minimum tangible net worth, as well as limitations on restricted payments, which may limit our ability to incur additional debt or pay dividends. The Credit Agreement contains customary events of default, including cross default provisions under the Restated Prudential Note Purchase Agreement (as defined below), change of control and failure to maintain REIT status. Any event of default, if not cured or waived in a timely manner, would increase by 200 basis points (2.00%) the interest rate we pay under the Credit Agreement and prohibit us from drawing funds against the Credit Agreement and could result in the acceleration of our indebtedness under the Credit Agreement and could also give rise to an event of default and could result in the acceleration of our indebtedness under the Restated Prudential Note Purchase Agreement. We may be prohibited from drawing funds against the Revolving Facility if there is a material adverse effect on our business, assets, prospects or condition. Senior Unsecured Notes On June 2, 2015, we entered into an amended and restated note purchase agreement (the “Restated Prudential Note Purchase Agreement”) amending and restating our existing senior secured note purchase agreement with The Prudential Insurance Company of America (“Prudential”) and an affiliate of Prudential. Pursuant to the Restated Prudential Note Purchase Agreement, Prudential and its affiliate released the mortgage liens and other security interests held by Prudential and its affiliate on certain of our properties and assets, redenominated the existing notes in the aggregate amount of $100,000,000 issued under the existing note purchase agreement as senior unsecured Series A Notes, and issued $75,000,000 of senior unsecured Series B Notes bearing interest at 5.35% and maturing in June 2023 to Prudential and certain affiliates of Prudential. The Series A Notes continue to bear interest at 6.0% and mature in February 2021. The Restated Prudential Note Purchase Agreement does not provide for scheduled reductions in the principal balance of either the Series A Notes or the Series B Notes prior to their respective maturities. As of December 31, 2016 and 2015, borrowings under the Restated Prudential Note Purchase Agreement were $175,000,000. In April 2015, the FASB issued guidance ASU 2015-03, which amends Topic 835, Other Presentation Matters. The amendments in ASU 2015-03 require that debt issuance costs be reported on the balance sheet as a direct reduction of the face amount of the debt instrument they relate to, and should not be classified as a deferred charge, as was previously required under the Accounting Standards Codification. We adopted ASU 2015-03 retrospectively as of January 1, 2016. As of December 31, 2016 and 2015, we had $257,000 and $311,000, respectively, of debt issuance costs included within senior unsecured notes. The Restated Prudential Note Purchase Agreement contains customary financial covenants such as leverage and coverage ratios and minimum tangible net worth, as well as limitations on restricted payments, which may limit our ability to incur additional debt or pay dividends. The Restated Prudential Note Purchase Agreement contains customary events of default, including default under the Credit Agreement and failure to maintain REIT status. Any event of default, if not cured or waived, would increase by 200 basis points (2.00%) the interest rate we pay under the Restated Prudential Note Purchase Agreement and could result in the acceleration of our indebtedness under the Restated Prudential Note Purchase Agreement and could also give rise to an event of default and could result in the acceleration of our indebtedness under our Credit Agreement. As of December 31, 2016, we are in compliance with all of the material terms of the Credit Agreement and Restated Prudential Note Purchase Agreement, including the various financial covenants described above. As of December 31, 2016, the maturity dates and amounts outstanding under the Credit Agreement and the Restated Prudential Note Purchase Agreement are as follows: Maturity Date Amount Credit Agreement—Revolving Facility June 2018 $ 75,000,000 Credit Agreement—Term Loan June 2020 $ 50,000,000 Restated Prudential Note Purchase Agreement—Series A Notes February 2021 $ 100,000,000 Restated Prudential Note Purchase Agreement—Series B Notes June 2023 $ 75,000,000 As of December 31, 2016 and 2015, the carrying value of the borrowings outstanding under the Credit Agreement approximated fair value. As of December 31, 2016, the fair value of the borrowings under the Prudential Series A Notes and Series B Notes were $104,900,000 and $76,100,000, respectively. As of December 31, 2015, the fair value of the borrowings under the Prudential Series A Notes and Series B Notes were $105,800,000 and $76,400,000, respectively. The fair value of the borrowings outstanding as of December 31, 2016 and 2015, was determined using a discounted cash flow technique that incorporates a market interest yield curve with adjustments for duration, optionality, risk profile and projected average borrowings outstanding or borrowings outstanding, which are based on unobservable inputs within Level 3 of the Fair Value Hierarchy.

Environmental Obligations

Environmental Obligations	12 Months Ended
	Dec. 31, 2016
Environmental Remediation Obligations [Abstract]
Environmental Obligations	NOTE 5. — ENVIRONMENTAL OBLIGATIONS We are subject to numerous federal, state and local laws and regulations, including matters relating to the protection of the environment such as the remediation of known contamination and the retirement and decommissioning or removal of long-lived assets including buildings containing hazardous materials, USTs and other equipment. Environmental costs are principally attributable to remediation costs which are incurred for, among other things, removing USTs, excavation of contaminated soil and water, installing, operating, maintaining and decommissioning remediation systems, monitoring contamination and governmental agency compliance reporting required in connection with contaminated properties. We seek reimbursement from state UST remediation funds related to these environmental costs where available. In July 2012, we purchased a ten-year pollution legal liability insurance policy covering substantially all of our properties for preexisting unknown environmental liabilities and new environmental events. The policy has a $50,000,000 aggregate limit and is subject to various self-insured retentions and other conditions and limitations. Our intention in purchasing this policy is to obtain protection predominantly for significant events. No assurances can be given that we will obtain a net financial benefit from this investment. The estimated future costs for known environmental remediation requirements are accrued when it is probable that a liability has been incurred and a reasonable estimate of fair value can be made. The accrued liability is the aggregate of the best estimate of the fair value of cost for each component of the liability net of estimated recoveries from state UST remediation funds considering estimated recovery rates developed from prior experience with the funds. We enter into leases and various other agreements which contractually allocate responsibility between the parties for known and unknown environmental liabilities at or relating to the subject properties. We are contingently liable for these environmental obligations in the event that our counterparty to the lease or other agreement does not satisfy them. It is possible that our assumptions regarding the ultimate allocation method and share of responsibility that we used to allocate environmental liabilities may change, which may result in material adjustments to the amounts recorded for environmental litigation accruals and environmental remediation liabilities. We are required to accrue for environmental liabilities that we believe are allocable to others under our leases and other agreements if we determine that it is probable that our counterparty will not meet its environmental obligations. We may ultimately be responsible to pay for environmental liabilities as the property owner if our counterparty fails to pay them. We assess whether to accrue for environmental liabilities based upon relevant factors including our tenants’ histories of paying for such obligations, our assessment of their financial ability, and their intent to pay for such obligations. However, there can be no assurance that our assessments are correct or that our tenants who have paid their obligations in the past will continue to do so. The ultimate resolution of these matters could cause a material adverse effect on our business, financial condition, results of operations, liquidity, ability to pay dividends or stock price. For all of our triple-net leases, our tenants are contractually responsible for compliance with environmental laws and regulations, removal of USTs at the end of their lease term (the cost of which in certain cases is partially borne by us) and remediation of any environmental contamination that arises during the term of their tenancy. Under the terms of our leases covering properties previously leased to Marketing (substantially all of which commenced in 2012), we have agreed to be responsible for environmental contamination at the premises that was known at the time the lease commenced, and which existed prior to commencement of the lease and is discovered (other than as a result of a voluntary site investigation) during the first ten years of the lease term (or a shorter period for a minority of such leases). After expiration of such ten-year (or, in certain cases, shorter) period, responsibility for all newly discovered contamination, even if it relates to periods prior to commencement of the lease, is contractually allocated to our tenant. Our tenants at properties previously leased to Marketing are in all cases responsible for the cost of any remediation of contamination that results from their use and occupancy of our properties. Under substantially all of our other triple-net leases, responsibility for remediation of all environmental contamination discovered during the term of the lease (including known and unknown contamination that existed prior to commencement of the lease) is the responsibility of our tenant. We anticipate that a majority of the USTs at properties previously leased to Marketing will be replaced over the next several years because these USTs are either at or near the end of their useful lives. For long-term, triple-net leases covering sites previously leased to Marketing, our tenants are responsible for the cost of removal and replacement of USTs and for remediation of contamination found during such UST removal and replacement, unless such contamination was found during the first ten years of the lease term and also existed prior to commencement of the lease. In those cases, we are responsible for costs associated with the remediation of such contamination. For properties that are vacant, we are responsible for costs associated with UST removals and for the cost of remediation of contamination found during the removal of USTs. We have also agreed to be responsible for environmental contamination that existed prior to the sale of certain properties assuming the contamination is discovered (other than as a result of a voluntary site investigation) during the first five years after the sale of the properties. In the course of certain UST removals and replacements at properties previously leased to Marketing where we retained continuing responsibility for preexisting environmental obligations, previously unknown environmental contamination was and continues to be discovered. As a result, we have developed a reasonable estimate of fair value for the prospective future environmental liability resulting from preexisting unknown environmental contamination and accrued for these estimated costs. These estimates are based primarily upon quantifiable trends, which we believe allow us to make reasonable estimates of fair value for the future costs of environmental remediation resulting from the removal and replacement of USTs. Our accrual of the additional liability represents the best estimate of the fair value of cost for each component of the liability, net of estimated recoveries from state UST remediation funds, considering estimated recovery rates developed from prior experience with the funds. In arriving at our accrual, we analyzed the ages of USTs at properties where we would be responsible for preexisting contamination found within ten years after commencement of a lease (for properties subject to long-term triple-net leases) or five years from a sale (for divested properties), and projected a cost to closure for new environmental contamination. Based on these estimates, along with relevant economic and risk factors, at December 31, 2016 and 2015, we have accrued $45,009,000 and $45,443,000, respectively, for these future environmental liabilities related to preexisting unknown contamination. Our estimates are based upon facts that are known to us at this time and an assessment of the possible ultimate remedial action outcomes. It is possible that our assumptions, which form the basis of our estimates, regarding our ultimate environmental liabilities may change, which may result in our providing an accrual, or adjustments to the amounts recorded, for environmental remediation liabilities. Among the many uncertainties that impact the estimates are our assumptions, the necessary regulatory approvals for, and potential modifications of remediation plans, the amount of data available upon initial assessment of contamination, changes in costs associated with environmental remediation services and equipment, the availability of state UST remediation funds and the possibility of existing legal claims giving rise to additional claims. Additional environmental liabilities could cause a material adverse effect on our business, financial condition, results of operations, liquidity, ability to pay dividends or stock price. Environmental exposures are difficult to assess and estimate for numerous reasons, including the extent of contamination, alternative treatment methods that may be applied, location of the property which subjects it to differing local laws and regulations and their interpretations, as well as the time it takes to remediate contamination and receive regulatory approval. In developing our liability for estimated environmental remediation obligations on a property by property basis, we consider among other things, enacted laws and regulations, assessments of contamination and surrounding geology, quality of information available, currently available technologies for treatment, alternative methods of remediation and prior experience. Environmental accruals are based on estimates which are subject to significant change, and are adjusted as the remediation treatment progresses, as circumstances change and as environmental contingencies become more clearly defined and reasonably estimable. We expect to adjust the accrued liabilities for environmental remediation obligations reflected in our consolidated financial statements as they become probable and a reasonable estimate of fair value can be made. We measure our environmental remediation liability at fair value based on expected future net cash flows, adjusted for inflation (using a range of 2.0% to 2.75%), and then discount them to present value (using a range of 4.0% to 7.0%). We adjust our environmental remediation liability quarterly to reflect changes in projected expenditures, changes in present value due to the passage of time and reductions in estimated liabilities as a result of actual expenditures incurred during each quarter. As of December 31, 2016, we had accrued a total of $74,516,000 for our prospective environmental remediation liability. This accrual includes (a) $29,507,000, which was our best estimate of reasonably estimable environmental remediation obligations and obligations to remove USTs for which we are the title owner, net of estimated recoveries and (b) $45,009,000 for future environmental liabilities related to preexisting unknown contamination. As of December 31, 2015, we had accrued a total of $84,345,000 for our prospective environmental remediation liability. This accrual includes (a) $38,902,000, which was our best estimate of reasonably estimable environmental remediation obligations and obligations to remove USTs for which we are the title owner, net of estimated recoveries and (b) $45,443,000 for future environmental liabilities related to preexisting unknown contamination. Environmental liabilities are accreted for the change in present value due to the passage of time and, accordingly, $4,107,000, $4,829,000 and $3,046,000 of net accretion expense was recorded for the years ended December 31, 2016, 2015 and 2014, respectively, which is included in environmental expenses. In addition, during the years ended December 31, 2016, 2015 and 2014, we recorded credits to environmental expenses included in continuing and discontinued operations aggregating $7,007,000, $4,639,000 and $2,756,000, respectively, where decreases in estimated remediation costs exceeded the depreciated carrying value of previously capitalized asset retirement costs. Environmental expenses also include project management fees, legal fees and provisions for environmental litigation losses. During the years ended December 31, 2016 and 2015, we increased the carrying value of certain of our properties by $11,346,000 and $12,285,000, respectively, due to increases in estimated environmental remediation costs. The recognition and subsequent changes in estimates in environmental liabilities and the increase or decrease in carrying values of the properties are non-cash transactions which do not appear on the face of the consolidated statements of cash flows. We recorded impairment charges aggregating $11,658,000 (consisting of $11,467,000 for known environmental liabilities and $191,000 for reserves for future environmental liabilities) and $12,548,000 (consisting of $10,398,000 for known environmental liabilities and $2,150,000 for reserves for future environmental liabilities) for the years ended December 31, 2016 and 2015, respectively, in continuing and discontinued operations for capitalized asset retirement costs. Capitalized asset retirement costs are being depreciated over the estimated remaining life of the UST, a ten-year period if the increase in carrying value is related to environmental remediation obligations or such shorter period if circumstances warrant, such as the remaining lease term for properties we lease from others. Depreciation and amortization expense related to capitalized asset retirement costs included in continuing and discontinued operations in our consolidated statements of operations for the years ended December 31, 2016, 2015 and 2014, were $5,126,000, $5,997,000 and $1,560,000, respectively. Capitalized asset retirement costs were $49,125,000 (consisting of $20,636,000 of known environmental liabilities and $28,489,000 of reserves for future environmental liabilities) and $51,393,000 (consisting of $20,939,000 of known environmental liabilities and $30,454,000 of reserves for future environmental liabilities) as of December 31, 2016 and 2015, respectively. As part of the triple-net leases for our properties previously leased to Marketing, we transferred title of the USTs to our tenants, and the obligation to pay for the retirement and decommissioning or removal of USTs at the end of their useful lives or earlier if circumstances warranted was fully or partially transferred to our new tenants. We remain contingently liable for this obligation in the event that our tenants do not satisfy their responsibilities. Accordingly, through December 31, 2016, we removed $13,769,000 of asset retirement obligations and $10,808,000 of net asset retirement costs related to USTs from our balance sheet. The cumulative net amount of $2,961,000 is recorded as deferred rental revenue and will be recognized on a straight-line basis as additional revenues from rental properties over the terms of the various leases. See Note 2 for additional information. We cannot predict what environmental legislation or regulations may be enacted in the future or how existing laws or regulations will be administered or interpreted with respect to products or activities to which they have not previously been applied. We cannot predict if state UST fund programs will be administered and funded in the future in a manner that is consistent with past practices and if future environmental spending will continue to be eligible for reimbursement at historical recovery rates under these programs. Compliance with more stringent laws or regulations, as well as more vigorous enforcement policies of the regulatory agencies or stricter interpretation of existing laws, which may develop in the future, could have an adverse effect on our financial position, or that of our tenants, and could require substantial additional expenditures for future remediation. In light of the uncertainties associated with environmental expenditure contingencies, we are unable to estimate ranges in excess of the amount accrued with any certainty; however, we believe it is possible that the fair value of future actual net expenditures could be substantially higher than amounts currently recorded by us. Adjustments to accrued liabilities for environmental remediation obligations will be reflected in our consolidated financial statements as they become probable and a reasonable estimate of fair value can be made. Future environmental expenses could cause a material adverse effect on our business, financial condition, results of operations, liquidity, ability to pay dividends or stock price.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income Taxes	NOTE 6. — INCOME TAXES Net cash paid for income taxes for the years ended December 31, 2016, 2015 and 2014 of $368,000, $341,000 and $316,000, respectively, includes amounts related to state and local income taxes for jurisdictions that do not follow the federal tax rules, which are provided for in property costs in our consolidated statements of operations. Earnings and profits (as defined in the Internal Revenue Code) are used to determine the tax attributes of dividends paid to stockholders and will differ from income reported for consolidated financial statements purposes due to the effect of items which are reported for income tax purposes in years different from that in which they are recorded for consolidated financial statements purposes. The federal tax attributes of the common dividends for the years ended December 31, 2016, 2015 and 2014 were: ordinary income of 61.6%, 83.8% and 43.9%, capital gain distributions of 34.4%, 16.2% and 56.1% and non-taxable distributions of 4.0%, 0.0% and 0.0%, respectively. To qualify for taxation as a REIT, we, among other requirements such as those related to the composition of our assets and gross income, must distribute annually to our stockholders at least 90% of our taxable income, including taxable income that is accrued by us without a corresponding receipt of cash. We cannot provide any assurance that our cash flows will permit us to continue paying cash dividends. Should the Internal Revenue Service (“IRS”) successfully assert that our earnings and profits were greater than the amount distributed, we may fail to qualify as a REIT; however, we may avoid losing our REIT status by paying a deficiency dividend to eliminate any remaining earnings and profits. We may have to borrow money or sell assets to pay such a deficiency dividend. Although tax returns for the years 2013, 2014 and 2015, and tax returns which will be filed for the year ended 2016, remain open to examination by federal and state tax jurisdictions under the respective statute of limitations, we have not currently identified any uncertain tax positions related to those years and, accordingly, have not accrued for uncertain tax positions as of December 31, 2016 or 2015. However, uncertain tax matters may have a significant impact on the results of operations for any single fiscal year or interim period. In January 2014, we received a favorable ruling from the IRS indicating that a portion of the payments received from the Marketing Estate will be treated as qualifying income and the remainder will be excluded from gross income for the purposes of the REIT qualification gross income tests. Therefore, none of the cash flow received from the Marketing Estate was treated as non-qualifying income for purposes of the REIT qualification gross income tests. During 2015, we received distributions from Marketing Estate in the amount of $18,177,000, which was treated as non-qualifying income for REIT qualification gross income tests. The IRS has allowed the use of a procedure, as a result of which we could satisfy the REIT income distribution requirement by making a distribution on our common stock comprised of (i) shares of our common stock having a value of up to 80% of the total distribution and (ii) cash in the remaining amount of the total distribution, in lieu of paying the distribution entirely in cash. In January 2015, we received a private letter ruling from the IRS that allows us to use such a procedure. On November 25, 2015, our Board of Directors declared a special dividend of $0.22 per share (the “Special Dividend”). The Special Dividend was payable in either common stock or cash. The aggregate amount of cash to be distributed by the Company was a minimum of 20% of the total distribution and a maximum of 40% of the total distribution, with the remainder to be paid in shares of common stock. As a result, we issued 255,747 shares of common stock and made cash payments aggregating $2,941,000 to our shareholders.

Shareholders' Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2016
Equity [Abstract]
Shareholders' Equity	NOTE 7. — SHAREHOLDERS’ EQUITY A summary of the changes in shareholders’ equity for the years ended December 31, 2016, 2015 and 2014 is as follows (in thousands, except per share amounts): COMMON STOCK ADDITIONAL PAID-IN DIVIDENDS PAID IN EXCESS SHARES AMOUNT CAPITAL OF EARNINGS TOTAL BALANCE, DECEMBER 31, 2013 33,397 $ 334 $ 462,397 $ (47,640 ) $ 415,091 Net earnings 23,418 23,418 Dividends declared — $0.960 per share (32,402 ) (32,402 ) Stock-based compensation 20 — 917 — 917 BALANCE, DECEMBER 31, 2014 33,417 $ 334 $ 463,314 $ (56,624 ) $ 407,024 Net earnings 37,410 37,410 Dividends declared — $1.15 per share (38,897 ) (38,897 ) Stock-based compensation 5 — 1,024 — 1,024 BALANCE, DECEMBER 31, 2015 33,422 $ 334 $ 464,338 $ (58,111 ) $ 406,561 Net earnings 38,411 38,411 Dividends declared — $1.03 per share (35,385 ) (35,385 ) Shares issued pursuant to ATM Program, net 653 7 14,879 — 14,886 Shares issued pursuant to stock dividends 256 3 4,409 — 4,412 Shares issued pursuant to dividend reinvestment 43 — 897 — 897 Stock-based compensation 19 — 1,136 — 1,136 BALANCE, DECEMBER 31, 2016 34,393 $ 344 $ 485,659 $ (55,085 ) $ 430,918 We are authorized to issue 20,000,000 shares of preferred stock, par value $.01 per share, of which none were issued as of December 31, 2016 or December 31, 2015. ATM Program In June 2016, we established an at-the-market equity offering program (the “ATM Program”), pursuant to which we may issue and sell shares of our common stock with an aggregate sales price of up to $125,000,000 through a consortium of banks acting as agents. Sales of the shares of common stock may be made, as needed, from time to time in at-the-market offerings as defined in Rule 415 of the Securities Act of 1933, including by means of ordinary brokers’ transactions on the New York Stock Exchange or otherwise at market prices prevailing at the time of sale, at prices related to prevailing market prices or as otherwise agreed to with the applicable agent. We incurred $360,000 of stock issuance costs in the establishment of the ATM Program. Stock issuance costs consisted primarily of underwriters’ fees and legal and accounting fees. During the year ended December 31, 2016, we issued 653,000 shares and received net proceeds of $14,886,000. Future sales, if any, will depend on a variety of factors to be determined by us from time to time, including among others, market conditions, the trading price of our common stock, determinations by us of the appropriate sources of funding for us and potential uses of funding available to us. Dividends For the year ended December 31, 2016, we paid dividends of $40,643,000 or $1.22 per share (which consisted of $33,202,000 or $1.00 per share of regular quarterly cash dividends and a $7,441,000 or $0.22 per share special cash and stock dividend). For the year ended December 31, 2015, we paid dividends of $35,150,000 or $1.04 per share (which consisted of $30,425,000 or $0.90 per share of regular quarterly cash dividends and a $4,725,000 or $0.14 per share special cash dividend). Dividend Reinvestment Plan Our dividend reinvestment plan provides our common stockholders with a convenient and economical method of acquiring additional shares of common stock by reinvesting all or a portion of their dividend distributions. During the year ended December 31, 2016, we issued 42,681 shares under the dividend reinvestment plan and raised $897,000. Stock-Based Compensation Compensation cost for our stock-based compensation plans using the fair value method was $1,426,000, $1,090,000 and $917,000 for the years ended December 31, 2016, 2015 and 2014, respectively, and is included in general and administrative expenses in our consolidated statements of operations.

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2016
Postemployment Benefits [Abstract]
Employee Benefit Plans	NOTE 8. — EMPLOYEE BENEFIT PLANS The Getty Realty Corp. 2004 Omnibus Incentive Compensation Plan (the “2004 Plan”) provided for the grant of restricted stock, restricted stock units (“RSUs”), performance awards, dividend equivalents, stock payments and stock awards to all employees and members of the Board of Directors. In May 2014, an Amended and Restated 2004 Omnibus Incentive Compensation Plan (the “Restated Plan”) was approved at our annual meeting of shareholders. The Restated Plan maintained the 2004 Plan’s authorization to grant awards with respect to an aggregate of 1,000,000 shares of common stock, and extended the term of 2004 Plan to May 2019. The Restated Plan increased the aggregate maximum number of shares of common stock that may be subject to awards granted during any calendar year to 100,000. The Restated Plan also included several updates to the 2004 Plan in order to comply with the current Internal Revenue Code. RSUs awarded under the 2004 Plan vest on a cumulative basis ratably over a five-year period with the first 20% vesting occurring on the first anniversary of the date of the grant. In addition, in April 2012, the Compensation Committee of the Board of Directors adopted, for 2012 only, a performance-based incentive compensation feature to our compensation program for named executive officers (“NEOs”) and other executives. Under the 2012 performance-based incentive compensation program, the RSUs that were granted, were granted on terms substantially consistent with the 2004 Plan, except for the relative vesting schedules. RSUs granted under the 2012 performance-based incentive compensation program vest on a cumulative basis, with the first 20% vesting occurring on May 1, 2013, and an additional 20% vesting on each May 1 thereafter, through May 1, 2017. In February 2013, the Compensation Committee granted a total of 35,000 RSUs to NEOs and other executives under the 2012 performance-based incentive compensation program. All such RSU grants include related dividend equivalents. We awarded to employees and directors 86,600, 79,250 and 72,125 RSUs and dividend equivalents in 2016, 2015 and 2014, respectively. RSUs granted before 2009 provide for settlement upon termination of employment with the Company or termination of service from the Board of Directors. RSUs granted in 2009 and thereafter provide for settlement upon the earlier of ten years after grant or termination of employment with the Company. On the settlement date each vested RSU will have a value equal to one share of common stock and may be settled, at the sole discretion of the Compensation Committee, in cash or by the issuance of one share of common stock. The RSUs do not provide voting or other shareholder rights unless and until the RSU is settled for a share of common stock. The RSUs vest starting one year from the date of grant, on a cumulative basis at the annual rate of 20% of the total number of RSUs covered by the award. The dividend equivalents represent the value of the dividends paid per common share multiplied by the number of RSUs covered by the award. For the years ended December 31, 2016, 2015 and 2014, dividend equivalents aggregating approximately $445,000, $464,000 and $333,000 respectively, were charged against retained earnings when common stock dividends were declared. The following is a schedule of the activity relating to RSUs outstanding: NUMBER OF FAIR VALUE AMOUNT AVERAGE RSUs OUTSTANDING AT DECEMBER 31, 2013 295,850 Granted 72,125 $ 1,386,000 $ 19.21 Settled (19,550 ) $ 360,000 $ 18.43 Cancelled (15,900 ) $ 293,000 $ 18.44 RSUs OUTSTANDING AT DECEMBER 31, 2014 332,525 Granted 79,250 $ 1,429,700 $ 18.04 Settled (8,160 ) $ 144,300 $ 17.68 Cancelled (3,240 ) $ 55,600 $ 17.16 RSUs OUTSTANDING AT DECEMBER 31, 2015 400,375 Granted 86,600 $ 1,593,400 $ 18.40 Settled (34,650 ) $ 635,800 $ 18.35 Cancelled (22,550 ) $ 415,400 $ 18.42 RSUs OUTSTANDING AT DECEMBER 31, 2016 429,775 The fair values of the RSUs were determined based on the closing market price of our stock on the date of grant. The fair value of the grants is recognized as compensation expense ratably over the five-year vesting period of the RSUs. Compensation expense related to RSUs for the years ended December 31, 2016, 2015 and 2014, was $1,418,000, $1,083,000 and $910,000, respectively, and is included in general and administrative expenses in our consolidated statements of operations. As of December 31, 2016, there was $2,660,000 of unrecognized compensation cost related to RSUs granted under the 2004 Plan and the 2012 performance-based incentive compensation program, which cost is expected to be recognized over a weighted average period of approximately three years. The aggregate intrinsic value of the 429,775 outstanding RSUs and the 221,819 vested RSUs as of December 31, 2016, was $10,955,000 and $5,654,000, respectively. The following is a schedule of the vesting activity relating to RSUs outstanding: NUMBER FAIR RSUs VESTED AT DECEMBER 31, 2013 136,135 Vested 38,270 $ 697,000 Settled (19,550 ) $ 360,000 RSUs VESTED AT DECEMBER 31, 2014 154,855 Vested 55,649 $ 954,400 Settled (8,160 ) $ 144,300 RSUs VESTED AT DECEMBER 31, 2015 202,344 Vested 54,125 $ 1,379,600 Settled (34,650 ) $ 635,800 RSUs VESTED AT DECEMBER 31, 2016 221,819 We have a retirement and profit sharing plan with deferred 401(k) savings plan provisions (the “Retirement Plan”) for employees meeting certain service requirements and a supplemental plan for executives (the “Supplemental Plan”). Under the terms of these plans, the annual discretionary contributions to the plans are determined by the Compensation Committee of the Board of Directors. Also, under the Retirement Plan, employees may make voluntary contributions and we have elected to match an amount equal to fifty percent of such contributions but in no event more than three percent of the employee’s eligible compensation. Under the Supplemental Plan, a participating executive may receive an amount equal to ten percent of eligible compensation, reduced by the amount of any contributions allocated to such executive under the Retirement Plan. Contributions, net of forfeitures, under the retirement plans approximated $268,000, $284,000 and $261,000 for the years ended December 31, 2016, 2015 and 2014, respectively. These amounts are included in general and administrative expenses in our consolidated statements of operations. During the year ended December 31, 2016, we distributed $469,000 from the Supplemental Plan to one former officer of the Company. During the year ended December 31, 2014, we distributed $2,690,000 from the Supplemental Plan to two former officers of the Company. There were no distributions from the Supplemental Plan for the year ended December 31, 2015. We have a stock option plan (the “Stock Option Plan”). Our authorization to grant options to purchase shares of our common stock under the Stock Option Plan has expired. As of December 31, 2016 and 2015, there were 5,000 options outstanding which were exercisable at $27.68 with an expiration date of May 15, 2017. As of December 31, 2016 and 2015, the 5,000 options outstanding had no intrinsic value.

Earnings Per Common Share

Earnings Per Common Share	12 Months Ended
	Dec. 31, 2016
Earnings Per Share [Abstract]
Earnings Per Common Share	NOTE 9. — EARNINGS PER COMMON SHARE Basic and diluted earnings per common share gives effect, utilizing the two-class method, to the potential dilution from the issuance of common shares in settlement of restricted stock units (“RSU” or “RSUs”) which provide for non-forfeitable dividend equivalents equal to the dividends declared per common share. Basic and diluted earnings per common share is computed by dividing net earnings less dividend equivalents attributable to RSUs by the weighted-average number of common shares outstanding during the year. Diluted earnings per common share, also gives effect to the potential dilution from the exercise of stock options utilizing the treasury stock method. There were 5,000 stock options excluded from the earnings per share calculations below as they were anti-dilutive as of December 31, 2016, 2015 and 2014, respectively. Year ended December 31, (in thousands): 2016 2015 2014 Earnings from continuing operations $ 42,081 $ 40,370 $ 20,405 Less dividend equivalents attributable to RSUs outstanding (482 ) (460 ) (341 ) Earnings from continuing operations attributable to common shareholders 41,599 39,910 20,064 (Loss) earnings from discontinued operations (3,670 ) (2,960 ) 3,013 Less dividend equivalents attributable to RSUs outstanding — — (50 ) (Loss) earnings from discontinued operations attributable to common shareholders (3,670 ) (2,960 ) 2,963 Net earnings attributable to common shareholders used for basic and diluted earnings per share calculation $ 37,929 $ 36,950 $ 23,027 Weighted average common shares outstanding: Basic and diluted 33,806 33,420 33,409 RSUs outstanding at the end of the period 430 400 333 Basic and diluted earnings per common share $ 1.12 $ 1.11 $ 0.69

Discontinued Operations and Ass

Discontinued Operations and Assets Held For Sale	12 Months Ended
	Dec. 31, 2016
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations and Assets Held For Sale	NOTE 10. — DISCONTINUED OPERATIONS AND ASSETS HELD FOR SALE We report as discontinued operations two properties which met the criteria to be accounted for as held for sale in accordance with GAAP as of June 30, 2014, and certain properties disposed of during the periods presented that were previously classified as held for sale as of June 30, 2014. All results of these discontinued operations are included in a separate component of income on the consolidated statements of operations under the caption discontinued operations. We elected to early adopt ASU 2014-08, Presentation of Financial Statements (Topic 205), effective July 1, 2014 and, as a result, the results of operations for all qualifying disposals and properties classified as held for sale that were not previously reported in discontinued operations as of June 30, 2014, are presented within income from continuing operations in our consolidated statements of income. During the year ended December 31, 2016, we sold two properties resulting in a loss of $205,000 that were previously classified as held for sale as of June 30, 2014. In addition, during the year ended December 31, 2016, we sold 12 properties resulting in a recognized gain of $2,373,000 that did not meet the criteria to be classified as discontinued operations. We determined that the 12 properties sold did not represent a strategic shift in our operations as defined in ASU 2014-08 and, as a result, the gains on dispositions of real estate for the 12 properties were reflected in our earnings from continuing operations. We also received funds from property condemnations resulting in a gain of $177,000 and recognized the remaining deferred gain of $3,868,000 related to the Ramoco sale. Real estate held for sale consisted of the following at December 31, 2016 and 2015: (in thousands) Year ended December 31, 2016 2015 Land $ 117 $ 603 Buildings and improvements 528 997 645 1,600 Accumulated depreciation and amortization — (261 ) Real estate held for sale, net $ 645 $ 1,339 The revenue from rental properties, impairment charges, other operating expenses and gains/losses from dispositions of real estate related to these properties are as follows: Year ended December 31, (in thousands) 2016 2015 2014 Revenues from rental properties $ 5 $ 164 $ 2,372 Impairments (5,926 ) (5,746 ) (8,596 ) Other operating income 2,456 2,283 242 (Loss) from operating activities (3,465 ) (3,299 ) (5,982 ) (Loss) gains from dispositions of real estate (205 ) 339 8,995 (Loss) earnings from discontinued operations $ (3,670 ) $ (2,960 ) $ 3,013

Quarterly Financial Data

Quarterly Financial Data	12 Months Ended
	Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Data	NOTE 11. — QUARTERLY FINANCIAL DATA The following is a summary of the quarterly results of operations for the years ended December 31, 2016 and 2015 (unaudited as to quarterly information) (in thousands, except per share amounts): THREE MONTHS ENDED YEAR ENDED DECEMBER 31, 2016 MARCH 31, JUNE 30, SEPTEMBER 30, DECEMBER 31, Revenues from rental properties $ 24,388 $ 24,140 $ 24,328 $ 25,083 Earnings from continuing operations 7,842 13,583 9,236 11,420 Net earnings $ 7,703 $ 13,576 $ 8,804 $ 8,328 Diluted earnings per common share: Earnings from continuing operations $ 0.23 $ 0.40 $ 0.27 $ 0.33 Net earnings $ 0.23 $ 0.40 $ 0.26 $ 0.24 YEAR ENDED DECEMBER 31, 2015 MARCH 31, JUNE 30, SEPTEMBER 30, DECEMBER 31, Revenues from rental properties $ 20,413 $ 22,122 $ 24,840 $ 25,514 (Loss) earnings from continuing operations (81 ) 11,503 8,564 20,384 Net (loss) earnings $ (1,137 ) $ 11,619 $ 7,035 $ 19,893 Diluted (loss) earnings per common share: (Loss) earnings from continuing operations $ (0.01 ) $ 0.34 $ 0.25 $ 0.60 Net (loss) earnings $ (0.04 ) $ 0.34 $ 0.21 $ 0.59

Property Acquisitions

Property Acquisitions	12 Months Ended
	Dec. 31, 2016
Business Combinations [Abstract]
Property Acquisitions	NOTE 12. — PROPERTY ACQUISITIONS During the year ended December 31, 2016, we acquired fee simple or leasehold interests in three convenience store and gasoline station properties and an adjacent parcel of land to an existing property for a redevelopment project, in separate transactions, for an aggregate purchase price of $7,688,000. We accounted for the acquisitions of fee simple interests and leasehold title as business combinations. We estimated the fair value of acquired tangible assets (consisting of land, buildings and improvements) “as if vacant.” Based on these estimates, we allocated $1,041,000 of the purchase price to land, $6,111,000 to buildings and improvements and $374,000 to in-place leases. In addition, we purchased an adjacent parcel of land to an existing property for a redevelopment project for $162,000. We incurred transaction costs of $86,000 directly related to these acquisitions which are included in general and administrative expenses in our consolidated statements of operations. During the year ended December 31, 2015, we acquired fee simple interests in 80 convenience store and gasoline station properties for an aggregate purchase price of $219,200,000. On June 3, 2015, we acquired fee simple interests in 77 convenience store and gasoline station properties from affiliates of Pacific Convenience and Fuels LLC which we simultaneously leased to Apro, LLC (d/b/a “United Oil”), a leading regional convenience store and gasoline station operator, under three separate cross-defaulted long-term triple-net unitary leases (the “United Oil Transaction”). The United Oil properties are located across California, Colorado, Nevada, Oregon and Washington State and operate under several well recognized brands including 7-Eleven, 76, Circle K, Conoco and My Goods Market. The total purchase price for the United Oil Transaction was $214,500,000, which was funded with proceeds from our Credit Agreement and Restated Prudential Note Purchase Agreement. The leases governing the properties are unitary triple-net lease agreements with initial terms of 20 years and options for up to three successive five-year renewal options. The unitary leases require United Oil to pay a fixed annual rent plus all amounts pertaining to the properties including environmental expenses, real estate taxes, assessments, license and permit fees, charges for public utilities and all other governmental charges. Rent is contractually scheduled to increase at various intervals over the course of the initial and renewal terms of the leases. We accounted for the United Oil Transaction as a business combination. We estimated the fair value of acquired tangible assets (consisting of land, buildings and improvements) “as if vacant.” Based on these estimates, we allocated $140,966,000 of the purchase price to land, $75,119,000 to buildings and improvements, $216,000 to above-market leases, $19,210,000 to below-market leases, which is accounted for as a deferred liability and $17,402,000 to in-place leases and other intangible assets. We incurred transaction costs of $413,000 directly related to the acquisition which are included in general and administrative expenses in our consolidated statements of operations. In addition, in 2015, we acquired fee simple interests in three convenience store and gasoline station properties in separate transactions for an aggregate purchase price of $4,700,000. Unaudited Pro Forma Condensed Consolidated Financial Information The following unaudited pro forma condensed consolidated financial information has been prepared utilizing our historical financial statements and the combined effect of additional revenue and expenses from the properties acquired assuming that the acquisitions had occurred on January 1, 2014, after giving effect to certain adjustments resulting from the straight-lining of scheduled rent increases. The following information also gives effect to the additional interest expense resulting from the assumed increase in borrowings outstanding under the Credit Agreement and the Restated Prudential Note Purchase Agreement to fund the acquisition. The unaudited pro forma condensed financial information is not indicative of the results of operations that would have been achieved had the acquisition reflected herein been consummated on the dates indicated or that will be achieved in the future. (in thousands, except per share data) Year ended December 31, 2015 2014 Revenues from continuing operations $ 118,003 $ 117,340 Earnings from continuing operations $ 41,763 $ 22,399 Basic and diluted earnings from continuing operations per common share $ 1.24 $ 0.66 Total revenues for the United Oil Transaction included in continuing operations were $17,631,000 and $10,177,000 for the years ended December 31, 2016 and 2015, respectively. Net earnings for the United Oil Transaction were $11,762,000 and $6,952,000 for the years ended December 31, 2016 and 2015, respectively.

Acquired Intangible Assets

Acquired Intangible Assets	12 Months Ended
	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Acquired Intangible Assets	NOTE 13. — ACQUIRED INTANGIBLE ASSETS Acquired above-market (when we are a lessor) and below-market leases (when we are a lessee) are included in prepaid expenses and other assets and had a balance of $2,527,000 and $3,021,000 (net of accumulated amortization of $4,210,000 and $3,715,000, respectively) at December 31, 2016 and 2015, respectively. Acquired above-market (when we are lessee) and below-market (when we are lessor) leases are included in accounts payable and accrued liabilities and had a balance of $22,539,000 and $24,534,000 (net of accumulated amortization of $13,619,000 and $11,624,000, respectively) at December 31, 2016 and 2015, respectively. When we are a lessor, above-market and below-market leases are amortized and recorded as either an increase (in the case of below-market leases) or a decrease (in the case of above-market leases) to rental revenue over the remaining term of the associated lease in place at the time of purchase. In-place leases are included in prepaid expenses and other assets and had a balance of $20,984,000 and $22,004,000 (net of accumulated amortization of $5,187,000 and $3,793,000, respectively) at December 31, 2016 and 2015, respectively. When we are a lessee, above-market and below-market leases are amortized and recorded as either an increase (in the case of below-market leases) or a decrease (in the case of above-market leases) to rental expense over the remaining term of the associated lease in place at the time of purchase. Rental income included amortization from acquired leases of $1,833,000, $1,426,000 and $1,239,000 for the years ended December 31, 2016, 2015 and 2014, respectively. Rent expense included amortization from acquired leases of $333,000 for the years ended December 31, 2016, 2015 and 2014. The value associated with in-place leases and lease origination costs are amortized into depreciation and amortization expense over the remaining life of the lease. Depreciation and amortization expense included amortization from in-place leases of $1,395,000, $1,019,000 and $518,000 for the years ended December 31, 2016, 2015 and 2014, respectively. The amortization for acquired intangible assets during the next five years and thereafter, assuming no early lease terminations, is as follows: Above-Market Below-Market In-Place As Lessor: Year ending December 31, 2017 $ 148,000 $ 1,833,000 $ 1,389,000 2018 47,000 1,781,000 1,363,000 2019 30,000 1,701,000 1,342,000 2020 24,000 1,463,000 1,322,000 2021 16,000 1,322,000 1,301,000 Thereafter 179,000 14,439,000 14,267,000 $ 444,000 $ 22,539,000 $ 20,984,000 Below-Market As Lessee: Year ending December 31, 2017 $ 320,000 2018 317,000 2019 312,000 2020 222,000 2021 157,000 Thereafter 755,000 $ 2,083,000

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2016
Subsequent Events [Abstract]
Subsequent Events	NOTE 14. — SUBSEQUENT EVENTS We have evaluated events and transactions occurring after December 31, 2016, for recognition or disclosure purposes. On February 21, 2017, we entered into an amended and restated note purchase agreement with Prudential and an affiliate of Prudential. Pursuant to this agreement, Prudential and its affiliate issued $50,000,000 of senior unsecured Series C Notes bearing interest at 4.75% and maturing in February 2025. The proceeds were used to repay borrowings outstanding under our Revolving Facility. There were no other reportable subsequent events or transactions.

SCHEDULE II - Valuation and Qua

SCHEDULE II - Valuation and Qualifying Accounts and Reserves	12 Months Ended
	Dec. 31, 2016
Valuation and Qualifying Accounts [Abstract]
SCHEDULE II - Valuation and Qualifying Accounts and Reserves	GETTY REALTY CORP. and SUBSIDIARIES for the years ended December 31, 2016, 2015 and 2014 (in thousands) BALANCE AT ADDITIONS DEDUCTIONS BALANCE December 31, 2016: Allowance for deferred rent receivable $ — $ — $ — $ — Allowance for accounts receivable $ 2,634 $ 855 $ 1,483 $ 2,006 December 31, 2015: Allowance for deferred rent receivable $ 7,009 $ — $ 7,009 $ — Allowance for accounts receivable $ 4,160 $ 1,778 $ 3,304 $ 2,634 December 31, 2014: Allowance for deferred rent receivable $ 4,775 $ 2,234 $ — $ 7,009 Allowance for accounts receivable $ 3,248 $ 1,182 $ 270 $ 4,160

SCHEDULE III - Real Estate and

SCHEDULE III - Real Estate and Accumulated Depreciation and Amortization	12 Months Ended
	Dec. 31, 2016
Text Block [Abstract]
SCHEDULE III - Real Estate and Accumulated Depreciation and Amortization	GETTY REALTY CORP. and SUBSIDIARIES As of December 31, 2016 (in thousands) The summarized changes in real estate assets and accumulated depreciation are as follows: 2016 2015 2014 Investment in real estate: Balance at beginning of year $ 783,233 $ 595,959 $ 570,275 Acquisitions and capital expenditures 19,097 233,785 79,259 Impairments (13,590 ) (20,606 ) (24,620 ) Sales and condemnations (6,379 ) (25,019 ) (25,786 ) Lease expirations/settlements (195 ) (886 ) (3,169 ) Balance at end of year $ 782,166 $ 783,233 $ 595,959 Accumulated depreciation and amortization: Balance at beginning of year $ 107,370 $ 100,690 $ 103,452 Depreciation and amortization 16,629 15,663 9,777 Impairments (776 ) (3,246 ) (3,086 ) Sales and condemnations (2,559 ) (5,313 ) (6,544 ) Lease expirations/settlements (88 ) (424 ) (2,909 ) Balance at end of year $ 120,576 $ 107,370 $ 100,690 Initial Cost Cost Gross Amount at Which Carried Date of Initial Land Building and Total Cost Accumulated Brookland, AR $ 1,468 $ — $ 149 $ 1,319 $ 1,468 $ 508 2007 Jonesboro, AR 868 — 173 695 868 282 2007 Jonesboro, AR 2,985 — 330 2,655 2,985 1,076 2007 Bellflower, CA 1,369 — 910 459 1,369 241 2007 Benicia, CA 2,224 — 1,058 1,166 2,224 639 2007 Chula Vista, CA 2,385 — 889 1,496 2,385 152 2014 Coachella, CA 2,235 — 1,217 1,018 2,235 521 2007 Cotati, CA 6,072 — 4,008 2,064 6,072 180 2015 Fillmore, CA 1,354 — 950 404 1,354 211 2007 Grass Valley, CA 1,485 — 853 632 1,485 57 2015 Hesperia, CA 1,643 — 849 794 1,643 384 2007 Hesperia, CA 2,055 — 492 1,563 2,055 166 2015 Indio, CA 1,250 — 302 948 1,250 89 2015 Indio, CA 2,727 — 1,486 1,241 2,727 122 2015 La Palma, CA 1,971 — 1,389 582 1,971 300 2007 La Puente, CA 7,615 — 6,405 1,210 7,615 125 2015 Lakeside, CA 3,715 — 2,695 1,020 3,715 100 2015 Los Angeles, CA 6,612 — 5,006 1,606 6,612 164 2015 Oakland, CA 5,434 — 4,123 1,311 5,434 132 2015 Ontario, CA 6,613 — 4,523 2,090 6,613 213 2015 Phelan, CA 4,611 — 3,276 1,335 4,611 139 2015 Riverside, CA 2,130 — 1,619 511 2,130 67 2015 Riverside, CA 2,737 — 1,216 1,521 2,737 179 2014 Sacramento, CA 3,193 — 2,207 986 3,193 103 2015 Sacramento, CA 4,247 — 2,604 1,643 4,247 151 2015 Sacramento, CA 5,942 — 4,233 1,709 5,942 168 2015 San Dimas, CA 1,941 — 749 1,192 1,941 528 2007 San Jose, CA 5,412 — 4,219 1,193 5,412 131 2015 San Leandro, CA 5,978 — 5,078 900 5,978 97 2015 Shingle Springs, CA 4,751 — 3,489 1,262 4,751 128 2015 Stockton, CA 1,187 — 627 560 1,187 58 2015 Stockton, CA 3,001 — 1,460 1,541 3,001 145 2015 Boulder, CO 3,900 — 2,875 1,025 3,900 95 2015 Castle Rock, CO 5,269 — 3,269 2,000 5,269 197 2015 Golden, CO 4,641 — 3,247 1,394 4,641 134 2015 Greenwood Village, CO 4,077 — 2,889 1,188 4,077 109 2015 Highlands Ranch, CO 4,356 — 2,921 1,435 4,356 140 2015 Lakewood, CO 2,349 — 1,541 808 2,349 75 2015 Littleton, CO 4,233 — 2,366 1,867 4,233 182 2015 Lone Tree, CO 6,612 — 5,125 1,487 6,612 152 2015 Longmont, CO 3,619 — 2,315 1,304 3,619 133 2015 Louisville, CO 6,605 — 5,228 1,377 6,605 138 2015 Morrison, CO 5,081 — 3,018 2,063 5,081 209 2015 Superior, CO 3,748 — 2,477 1,271 3,748 124 2015 Thornton, CO 5,003 — 2,722 2,281 5,003 223 2015 Westminster, CO 1,457 — 752 705 1,457 67 2015 Wheat Ridge, CO 6,151 — 4,201 1,950 6,151 197 2015 Avon, CT 731 333 403 661 1,064 309 2002 Bridgeport, CT 346 12 230 128 358 128 1985 Bridgeport, CT 339 22 220 141 361 112 1985 Bridgeport, CT 59 380 24 415 439 196 1982 Bridgeport, CT 313 298 204 407 611 162 1985 Bridgeport, CT 350 330 228 452 680 203 1985 Bridgeport, CT 377 394 246 525 771 254 1985 Bristol, CT 360 — — 360 360 360 2004 Bristol, CT 365 — 237 128 365 62 2004 Bristol, CT 1,594 — 1,036 558 1,594 272 2004 Brookfield, CT 57 733 20 770 790 288 1985 Cheshire, CT 491 (113 ) 267 111 378 46 1985 Cobalt, CT 396 — — 396 396 396 2004 Darien, CT 667 323 434 556 990 352 1985 Durham, CT 994 — — 994 994 994 2004 East Hartford, CT 208 224 54 378 432 223 1982 Ellington, CT 1,295 — 842 453 1,295 221 2004 Fairfield, CT 430 51 280 201 481 125 1985 Farmington, CT 466 — 303 163 466 79 2004 Franklin, CT 51 447 20 478 498 257 1982 Hartford, CT 571 — 371 200 571 97 2004 Hartford, CT 665 — 432 233 665 113 2004 Manchester, CT 110 323 50 383 433 147 1987 Meriden, CT 208 339 84 463 547 229 1982 Meriden, CT 1,532 — 989 543 1,532 269 2004 Middletown, CT 132 564 131 565 696 242 1987 Middletown, CT 1,039 — 675 364 1,039 177 2004 Milford, CT 293 45 191 147 338 120 1985 Milford, CT 57 295 30 322 352 103 1985 Montville, CT 57 332 24 365 389 146 1982 New Britain, CT 391 — 254 137 391 67 2004 New Haven, CT 217 297 141 373 514 135 1985 New Haven, CT 539 454 351 642 993 373 1985 New Haven, CT 1,414 (275 ) 569 570 1,139 99 1985 Newington, CT 954 — 620 334 954 162 2004 North Haven, CT 405 — 252 153 405 84 2004 Norwalk, CT 511 45 332 224 556 181 1985 Norwalk, CT — 942 402 540 942 188 1988 Norwich, CT 107 323 44 386 430 172 1982 Old Greenwich, CT — 1,223 620 603 1,223 194 1969 Plainville, CT 545 — 354 191 545 93 2004 Plymouth, CT 931 — 605 326 931 159 2004 Ridgefield, CT 402 304 167 539 706 324 1985 Ridgefield, CT 536 466 348 654 1,002 318 1985 South Windham, CT 644 1,398 598 1,444 2,042 548 2004 South Windsor, CT 545 — 337 208 545 115 2004 Stamford, CT 507 16 330 193 523 150 1985 Stamford, CT 603 343 393 553 946 265 1985 Stamford, CT 508 476 330 654 984 260 1985 Suffield, CT 237 603 201 639 840 481 2004 Tolland, CT 108 379 44 443 487 220 1982 Vernon, CT 1,434 — — 1,434 1,434 1,434 2004 Wallingford, CT 551 — 335 216 551 123 2004 Waterbury, CT 469 — 305 164 469 80 2004 Waterbury, CT 515 — 335 180 515 88 2004 Waterbury, CT 804 — 516 288 804 145 2004 Watertown, CT 352 343 204 491 695 215 1992 Watertown, CT 925 — 567 358 925 201 2004 West Haven, CT 185 322 74 433 507 214 1982 West Haven, CT 1,215 — 790 425 1,215 207 2004 Westbrook, CT 345 — — 345 345 345 2004 Westport, CT 604 12 393 223 616 172 1985 Wethersfield, CT 447 — — 447 447 447 2004 Willimantic, CT 717 — 466 251 717 122 2004 Wilton, CT 519 364 338 545 883 242 1985 Windsor Locks, CT 1,031 — 670 361 1,031 176 2004 Windsor Locks, CT 1,434 1,400 1,055 1,779 2,834 1,453 2004 Washington, DC 848 — 418 430 848 79 2013 Washington, DC 941 — 664 277 941 58 2013 Orlando, FL 868 33 401 500 901 333 2000 Haleiwa, HI 1,522 — 1,058 464 1,522 300 2007 Honolulu, HI 1,069 16 981 104 1,085 75 2007 Honolulu, HI 1,539 — 1,219 320 1,539 162 2007 Honolulu, HI 1,769 — 1,192 577 1,769 269 2007 Honolulu, HI 9,211 — 8,194 1,017 9,211 490 2007 Kaneohe, HI 1,364 — 822 542 1,364 295 2007 Kaneohe, HI 1,978 182 1,473 687 2,160 297 2007 Waianae, HI 1,520 — 648 872 1,520 406 2007 Waianae, HI 1,997 — 871 1,126 1,997 527 2007 Waipahu, HI 2,458 — 945 1,513 2,458 676 2007 Arlington, MA 518 28 338 208 546 164 1985 Auburn, MA 174 213 125 262 387 122 1986 Auburn, MA — 535 388 147 535 29 1996 Auburn, MA 600 — 600 — 600 — 2011 Auburn, MA 625 — 625 — 625 — 2011 Auburn, MA 369 264 240 393 633 182 1991 Auburn, MA 725 — 725 — 725 — 2011 Auburn, MA 800 — — 800 800 442 2011 Barre, MA 536 12 348 200 548 111 1991 Bedford, MA 1,350 — 1,350 — 1,350 — 2011 Bellingham, MA 734 73 476 331 807 269 1985 Belmont, MA 390 29 254 165 419 132 1985 Bradford, MA 650 — 650 — 650 — 2011 Burlington, MA 600 — 600 — 600 — 2011 Burlington, MA 1,250 — 1,250 — 1,250 — 2011 Chelmsford, MA 715 — — 715 715 231 2012 Danvers, MA 400 — 400 — 400 — 2011 Dracut, MA 450 — 450 — 450 — 2011 Falmouth, MA 519 127 458 188 646 121 1988 Fitchburg, MA 390 33 254 169 423 107 1992 Foxborough, MA 427 98 325 200 525 135 1990 Framingham, MA 400 23 260 163 423 100 1991 Gardner, MA 550 — 550 — 550 — 2011 Gardner, MA 1,008 282 657 633 1,290 416 1985 Gardners, MA 787 — 638 149 787 23 2014 Hingham, MA 353 111 243 221 464 152 1989 Hyde Park, MA 499 157 322 334 656 194 1985 Leominster, MA 571 — 199 372 571 89 2012 Lowell, MA 375 9 250 134 384 134 1986 Lowell, MA 361 90 201 250 451 246 1985 Lowell, MA — 619 429 190 619 37 1996 Lynn, MA 400 — 400 — 400 — 2011 Lynn, MA 850 — 850 — 850 — 2011 Marlborough, MA 550 — 550 — 550 — 2011 Maynard, MA 736 98 479 355 834 219 1985 Melrose, MA 600 — 600 — 600 — 2011 Methuen, MA 300 134 150 284 434 217 1986 Methuen, MA 380 64 246 198 444 166 1985 Methuen, MA 491 97 319 269 588 162 1985 Methuen, MA 650 — 650 — 650 — 2011 Newton, MA 691 124 450 365 815 268 1985 North Andover, MA 394 32 256 170 426 137 1985 Peabody, MA 400 18 252 166 418 166 1986 Peabody, MA 550 — 550 — 550 — 2011 Peabody, MA 650 — 650 — 650 — 2011 Randolph, MA 573 238 430 381 811 228 1985 Revere, MA 1,300 — 1,300 — 1,300 — 2011 Rockland, MA 579 45 377 247 624 198 1985 Salem, MA 600 — 600 — 600 — 2011 Seekonk, MA 1,073 (261 ) 576 236 812 88 1985 Shrewsbury, MA 400 — 400 — 400 — 2011 Shrewsbury, MA 450 — 450 — 450 — 2011 Sterling, MA 476 2 309 169 478 94 1991 Sutton, MA 714 62 464 312 776 199 1993 Tewksbury, MA 125 506 75 556 631 170 1986 Tewksbury, MA 1,200 — 1,200 — 1,200 — 2011 Upton, MA 428 115 279 264 543 125 1991 Wakefield, MA 900 — 900 — 900 — 2011 Walpole, MA 450 92 293 249 542 146 1985 Watertown, MA 358 211 321 248 569 142 1985 Webster, MA 1,012 618 659 971 1,630 474 1985 West Boylston, MA 312 29 203 138 341 89 1991 West Roxbury, MA 491 86 319 258 577 181 1985 Westborough, MA 312 21 203 130 333 81 1991 Westborough, MA 450 — 450 — 450 — 2011 Westford, MA 275 81 175 181 356 142 1986 Wilmington, MA 600 — 600 — 600 — 2011 Wilmington, MA 1,300 — 1,300 — 1,300 — 2011 Woburn, MA 350 63 200 213 413 201 1986 Woburn, MA 508 394 508 394 902 250 1985 Worcester, MA 400 — 400 — 400 — 2011 Worcester, MA 500 — 500 — 500 — 2011 Worcester, MA 550 — 550 — 550 — 2011 Worcester, MA 547 11 356 202 558 115 1991 Worcester, MA 498 330 322 506 828 261 1985 Worcester, MA 979 7 636 350 986 195 1991 Accokeek, MD 692 — 692 — 692 — 2010 Baltimore, MD 802 — — 802 802 392 2007 Baltimore, MD 2,259 — 722 1,537 2,259 701 2007 Beltsville, MD 525 — 525 — 525 — 2009 Beltsville, MD 731 — 731 — 731 — 2009 Beltsville, MD 1,050 — 1,050 — 1,050 — 2009 Beltsville, MD 1,130 — 1,130 — 1,130 — 2009 Bladensburg, MD 571 — 571 — 571 — 2009 Bowie, MD 1,084 — 1,084 — 1,084 — 2009 Capitol Heights, MD 628 — 628 — 628 — 2009 Clinton, MD 651 — 651 — 651 — 2009 College Park, MD 445 — 445 — 445 — 2009 College Park, MD 536 — 536 — 536 — 2009 District Heights, MD 388 — 388 — 388 — 2009 District Heights, MD 479 — 479 — 479 — 2009 Ellicott City, MD 895 — — 895 895 460 2007 Emmitsburg, MD 147 191 102 236 338 154 1986 Forestville, MD 1,039 — 1,039 — 1,039 — 2009 Fort Washington, MD 422 — 422 — 422 — 2009 Greenbelt, MD 1,153 — 1,153 — 1,153 — 2009 Hyattsville, MD 491 — 491 — 491 — 2009 Hyattsville, MD 594 — 594 — 594 — 2009 Landover, MD 662 — 662 — 662 — 2009 Landover, MD 753 — 753 — 753 — 2009 Landover Hills, MD 457 — 457 — 457 — 2009 Landover Hills, MD 1,358 — 1,358 — 1,358 — 2009 Lanham, MD 822 — 822 — 822 — 2009 Laurel, MD 696 — 696 — 696 — 2009 Laurel, MD 1,210 — 1,210 — 1,210 — 2009 Laurel, MD 1,267 — 1,267 — 1,267 — 2009 Laurel, MD 1,415 — 1,415 — 1,415 — 2009 Laurel, MD 1,530 — 1,530 — 1,530 — 2009 Laurel, MD 2,523 — 2,523 — 2,523 — 2009 Oxon Hill, MD 1,256 — 1,256 — 1,256 — 2009 Riverdale, MD 582 — 582 — 582 — 2009 Riverdale, MD 788 — 788 — 788 — 2009 Seat Pleasant, MD 468 — 468 — 468 — 2009 Suitland, MD 377 — 377 — 377 — 2009 Suitland, MD 673 — 673 — 673 — 2009 Temple Hills, MD 331 — 331 — 331 — 2009 Upper Marlboro, MD 845 — 845 — 845 — 2009 Biddeford, ME 618 8 235 391 626 391 1985 Lewiston, ME 342 188 222 308 530 200 1985 Kernersville, NC 449 — 338 111 449 102 2007 Madison, NC 396 — 46 350 396 185 2007 New Bern, NC 350 83 190 243 433 143 2007 Belfield, ND 1,232 — 382 850 1,232 727 2007 Allenstown, NH 1,787 — 467 1,320 1,787 670 2007 Concord, NH 675 — 675 — 675 — 2011 Concord, NH 900 — 900 — 900 — 2011 Derry, NH 418 17 158 277 435 275 1987 Derry, NH 950 — 950 — 950 — 2011 Dover, NH 650 — 650 — 650 — 2011 Dover, NH 1,200 — 1,200 — 1,200 — 2011 Goffstown, NH 1,737 — 697 1,040 1,737 327 2012 Hooksett, NH 1,562 — 824 738 1,562 651 2007 Kingston, NH 1,500 — 1,500 — 1,500 — 2011 Londonderry, NH 703 30 458 275 733 216 1985 Londonderry, NH 1,100 — 1,100 — 1,100 — 2011 Manchester, NH 550 — 550 — 550 — 2011 Milford, NH 190 147 115 222 337 138 1986 Nashua, NH 500 — 500 — 500 — 2011 Nashua, NH 550 — 550 — 550 — 2011 Nashua, NH 750 — 750 — 750 — 2011 Nashua, NH 825 — 825 — 825 — 2011 Nashua, NH 1,750 — 1,750 — 1,750 — 2011 Northwood, NH 500 — 500 — 500 — 2011 Pelham, NH — 730 317 413 730 69 1996 Plaistow, NH 300 101 245 156 401 155 1987 Portsmouth, NH 525 — 525 — 525 — 2011 Raymond, NH 550 — 550 — 550 — 2011 Rochester, NH 700 — 700 — 700 — 2011 Rochester, NH 939 12 600 351 951 269 1985 Rochester, NH 1,400 — 1,400 — 1,400 — 2011 Rochester, NH 1,600 — 1,600 — 1,600 — 2011 Salem, NH 744 18 484 278 762 215 1985 Salem, NH 450 880 350 980 1,330 43 1986 Basking Ridge, NJ 362 287 200 449 649 221 1986 Bergenfield, NJ 382 331 300 413 713 166 1990 Brick, NJ 1,508 229 1,000 737 1,737 432 2000 Colonia, NJ 720 (297 ) 72 351 423 264 1985 Elizabeth, NJ 406 62 227 241 468 149 1985 Flemington, NJ 708 (251 ) 168 289 457 62 1985 Flemington, NJ 547 17 346 218 564 169 1985 Fort Lee, NJ 1,246 362 811 797 1,608 439 1985 Franklin Twp., NJ 683 195 445 433 878 305 1985 Freehold, NJ 494 370 95 769 864 121 1978 Green Village, NJ 277 76 128 225 353 191 1985 Hasbrouck Heights, NJ 641 440 416 665 1,081 350 1985 Hillsborough, NJ 237 487 100 624 724 251 1985 Irvington, NJ 411 (34 ) 98 279 377 31 1985 Lake Hopatcong, NJ 1,305 — 800 505 1,305 412 2000 Livingston, NJ 871 294 568 597 1,165 314 1985 Long Branch, NJ 514 437 335 616 951 228 1985 Mcafee, NJ 672 268 437 503 940 240 1985 Midland Park, NJ 200 333 150 383 533 181 1989 Mountainside, NJ 665 (172 ) 134 359 493 84 1985 North Bergen, NJ 630 151 410 371 781 265 1985 North Plainfield, NJ 227 576 175 628 803 386 1978 Nutley, NJ 434 199 283 350 633 194 1985 Paramus, NJ 382 68 249 201 450 131 1985 Parlin, NJ 418 157 203 372 575 84 1985 Paterson, NJ 620 16 403 233 636 181 1985 Ridgefield, NJ 55 280 33 302 335 112 1980 Ridgewood, NJ 703 386 458 631 1,089 304 1985 Somerville, NJ 253 124 201 176 377 84 1987 Trenton, NJ 1,303 — 1,146 157 1,303 39 2012 Union, NJ 437 316 239 514 753 103 1985 Washington Township, NJ 912 287 594 605 1,199 318 1985 Watchung, NJ 449 130 226 353 579 71 1985 West Orange, NJ 800 412 521 691 1,212 380 1985 Fernley, NV 1,665 — 221 1,444 1,665 162 2015 Naples, NY 1,257 — 827 430 1,257 186 2006 Perry, NY 1,444 — 1,044 400 1,444 173 2006 Prattsburg, NY 553 — 303 250 553 108 2006 Rochester, NY 853 — 303 550 853 238 2006 Alfred Station, NY 714 — 414 300 714 130 2006 Amherst, NY 222 247 173 296 469 90 2000 Astoria, NY 1,684 — 1,105 579 1,684 122 2013 Avoca, NY 936 (1 ) 635 300 935 130 2006 Batavia, NY 684 — 364 320 684 139 2006 Bay Shore, NY 156 356 86 426 512 240 1981 Bayside, NY 470 261 306 425 731 171 1985 Bellaire, NY 330 37 215 152 367 125 1985 Brewster, NY 789 — 789 — 789 — 2011 Briarcliff Manor, NY 652 606 502 756 1,258 418 1976 Bronx, NY 104 226 90 240 330 233 1985 Bronx, NY 423 — 423 — 423 — 2013 Bronx, NY 391 53 251 193 444 160 1985 Bronx, NY 877 — 877 — 877 — 2013 Bronx, NY 884 — 884 — 884 — 2013 Bronx, NY 953 — 953 — 953 — 2013 Bronx, NY 1,049 — 485 564 1,049 119 2013 Bronx, NY 1,910 — 1,349 561 1,910 124 2013 Bronx, NY 2,408 — 1,712 696 2,408 138 2013 Bronxville, NY 1,232 — 1,232 — 1,232 — 2011 Brooklyn, NY — 396 — 396 396 195 1970 Brooklyn, NY 100 345 67 378 445 177 1972 Brooklyn, NY 75 384 31 428 459 210 1967 Brooklyn, NY 148 394 104 438 542 238 1972 Brooklyn, NY 237 382 154 465 619 156 1985 Brooklyn, NY 282 457 176 563 739 362 1967 Brooklyn, NY 422 334 275 481 756 249 1985 Brooklyn, NY 478 318 306 490 796 254 1985 Brooklyn, NY 627 313 408 532 940 273 1985 Buffalo, NY 312 242 151 403 554 168 2000 Byron, NY 969 — 669 300 969 130 2006 Chester, NY 1,158 — 1,158 — 1,158 — 2011 Churchville, NY 1,011 — 601 410 1,011 178 2006 Commack, NY 321 26 209 138 347 110 1985 Corona, NY 114 301 113 302 415 302 1965 Corona, NY 2,543 — 1,903 640 2,543 129 2013 Cortland Manor, NY 1,872 — 1,872 — 1,872 — 2011 Dobbs Ferry, NY 670 34 434 270 704 213 1985 Dobbs Ferry, NY 1,345 — 1,345 — 1,345 — 2011 East Hampton, NY 660 39 428 271 699 214 1985 East Islip, NY 89 549 87 551 638 259 1972 East Pembroke, NY 787 — 537 250 787 108 2006 Eastchester, NY 1,724 — 1,724 — 1,724 — 2011 Elmont, NY 389 319 231 477 708 286 1978 Elmsford, NY — 1,012 581 431 1,012 196 1971 Elmsford, NY 1,453 — 1,453 — 1,453 — 2011 Fishkill, NY 1,793 — 1,793 — 1,793 — 2011 Floral Park, NY 617 175 356 436 792 219 1998 Flushing, NY 516 241 320 437 757 193 1998 Flushing, NY 1,936 — 1,413 523 1,936 110 2013 Flushing, NY 1,947 — 1,405 542 1,947 105 2013 Flushing, NY 2,478 — 1,801 677 2,478 131 2013 Forrest Hill, NY 1,273 — 1,273 — 1,273 — 2013 Franklin Square, NY 153 331 137 347 484 146 1978 Friendship, NY 393 — 43 350 393 152 2006 Garden City, NY 361 243 236 368 604 155 1985 Garnerville, NY 1,508 — 1,508 — 1,508 — 2011 Glen Head, NY 234 219 103 350 453 347 1982 Glen Head, NY 461 284 301 444 745 215 1985 Glendale, NY 369 280 236 413 649 186 1985 Great Neck, NY 500 252 450 302 752 120 1985 Greigsville, NY 1,018 — 203 815 1,018 449 2008 Hartsdale, NY 1,626 — 1,626 — 1,626 — 2011 Hawthorne, NY 2,084 — 2,084 — 2,084 — 2011 Hopewell Junction, NY 1,163 — 1,163 — 1,163 — 2011 Huntington Station, NY 141 284 84 341 425 155 1978 Hyde Park, NY 990 — 990 — 990 — 2011 Katonah, NY 1,084 — 1,084 — 1,084 — 2011 Lagrangeville, NY 130 1,043 64 1,109 1,173 382 1972 Lakeville, NY 1,028 — 203 825 1,028 458 2008 Levittown, NY 503 42 327 218 545 175 1985 Levittown, NY 546 87 356 277 633 210 1985 Long Island City, NY 2,717 — 1,183 1,534 2,717 269 2013 Mamaroneck, NY 1,429 — 1,429 — 1,429 — 2011 Massapequa, NY 333 285 217 401 618 168 1985 Mastic, NY 313 110 204 219 423 193 1985 Middletown, NY 719 — 719 — 719 — 2011 Middletown, NY 751 274 489 536 1,025 279 1985 Middletown, NY 1,281 — 1,281 — 1,281 — 2011 Millwood, NY 1,448 — 1,448 — 1,448 — 2011 Mount Kisco, NY 1,907 — 1,907 — 1,907 — 2011 Mount Vernon, NY 985 — 985 — 985 — 2011 Nanuet, NY 2,316 — 2,316 — 2,316 — 2011 New Paltz, NY 971 — 971 — 971 — 2011 New Rochelle, NY 188 344 104 428 532 176 1982 New Rochelle, NY 1,887 — 1,887 — 1,887 — 2011 New Windsor, NY 1,084 — 1,084 — 1,084 — 2011 New York, NY 126 399 78 447 525 263 1972 Newburgh, NY 527 — 527 — 527 — 2011 Newburgh, NY 1,192 — 1,192 — 1,192 — 2011 Niskayuna, NY 425 35 275 185 460 185 1986 North Lindenhurst, NY 295 243 192 346 538 145 1998 Ossining, NY 71 300 43 328 371 138 1977 Ossining, NY 231 219 117 333 450 108 1985 Ozone Park, NY 57 367 45 379 424 178 1976 Peekskill, NY 2,207 — 2,207 — 2,207 — 2011 Pelham, NY 1,035 — 1,035 — 1,035 — 2011 Pelham Manor, NY 137 307 75 369 444 183 1985 Pleasant Valley, NY 398 62 240 220 460 204 1986 Port Chester, NY 941 — — 941 941 332 2011 Port Chester, NY 1,015 — 1,015 — 1,015 — 2011 Port Jefferson, NY 387 294 246 435 681 215 1985 Poughkeepsie, NY 591 — 591 — 591 — 2011 Poughkeepsie, NY 1,020 — 1,020 — 1,020 — 2011 Poughkeepsie, NY 1,231 (31 ) 1,200 — 1,200 — 2011 Poughkeepsie, NY 1,306 — 1,306 — 1,306 — 2011 Poughkeepsie, NY 1,340 — 1,340 — 1,340 — 2011 Poughkeepsie, NY 1,355 — 1,355 — 1,355 — 2011 Rego Park, NY 2,783 — 2,104 679 2,783 138 2013 Riverhead, NY 724 — 432 292 724 216 1998 Rochester, NY 559 — 159 400 559 173 2006 Rochester, NY 595 — 305 290 595 119 2008 Rockaway Beach, NY 111 277 79 309 388 125 1972 Rockville Centre, NY 350 66 201 215 416 189 1985 Rokaway Park, NY 1,605 — 1,605 — 1,605 — 2013 Rye, NY 872 — 872 — 872 — 2011 Sag Harbor, NY 704 35 458 281 739 221 1985 Savona, NY 1,314 — 964 350 1,314 152 2006 Sayville, NY 345 245 300 290 590 82 1998 Scarsdale, NY 1,301 — 1,301 — 1,301 — 2011 Shrub Oak, NY 1,061 508 691 878 1,569 491 1985 Sleepy Hollow, NY 281 332 130 483 613 348 1969 Smithtown, NY 88 287 51 324 375 135 1977 Spring Valley, NY 749 — 749 — 749 — 2011 St. Albans, NY 330 106 215 221 436 166 1985 Staten Island, NY 357 35 230 162 392 132 1985 Staten Island, NY 389 90 254 225 479 192 1985 Staten Island, NY 301 328 196 433 629 207 1985 Staten Island, NY 350 290 228 412 640 185 1985 Stony Brook, NY 176 281 105 352 457 163 1978 Tarrytown, NY 956 — 956 — 956 — 2011 Tuchahoe, NY 1,650 — 1,650 — 1,650 — 2011 Wantagh, NY 640 — 370 270 640 198 1998 Wappingers Falls, NY 452 — — 452 452 242 2011 Wappingers Falls, NY 1,488 — 1,488 — 1,488 — 2011 Warsaw, NY 990 — 690 300 990 130 2006 Warwick, NY 1,049 — 1,049 — 1,049 — 2011 West Nyack, NY 936 — 936 — 936 — 2011 West Taghkanic, NY 203 442 122 523 645 305 1986 White Plains, NY — 569 303 266 569 181 1972 White Plains, NY 1,458 — 1,458 — 1,458 — 2011 Yaphank, NY — 798 375 423 798 103 1993 Yonkers, NY — 610 — 610 610 251 1970 Yonkers, NY — 1,040 780 260 1,040 81 1990 Yonkers, NY 1,020 64 665 419 1,084 332 1985 Yonkers, NY 291 1,052 216 1,127 1,343 364 1972 Yonkers, NY 1,907 — 1,907 — 1,907 — 2011 Yorktown Heights, NY 1,700 — — 1,700 1,700 47 2013 Yorktown Heights, NY 2,365 — 2,365 — 2,365 — 2011 Crestline, OH 1,202 — 285 917 1,202 376 2008 Mansfield, OH 922 — 332 590 922 227 2008 Mansfield, OH 1,950 — 700 1,250 1,950 468 2009 Monroeville, OH 2,580 — 485 2,095 2,580 763 2009 Banks, OR 498 — 498 — 498 — 2015 Estacada, OR 646 — 84 562 646 48 2015 Pendleton, OR 766 — 122 644 766 61 2015 Portland, OR 4,416 — 3,368 1,048 4,416 94 2015 Salem, OR 1,071 — 399 672 1,071 77 2015 Salem, OR 1,350 — 521 829 1,350 76 2015 Salem, OR 1,408 — 524 884 1,408 84 2015 Salem, OR 4,215 — 3,182 1,033 4,215 100 2015 Salem, OR 4,614 — 3,517 1,097 4,614 99 2015 Springfield, OR 1,398 — 796 602 1,398 67 2015 Allentown, PA 358 31 233 156 389 125 1985 Allison Park, PA 1,500 — 850 650 1,500 343 2010 Harrisburg, PA 399 213 199 413 612 313 1989 Havertown, PA 402 63 254 211 465 146 1985 Lancaster, PA 643 17 300 360 660 360 1989 New Holland, PA 313 24 143 194 337 185 1989 New Kensington, PA 1,375 — 675 700 1,375 207 2010 New Oxford, PA 1,045 (75 ) 181 789 970 777 1996 Philadelphia, PA 406 175 264 317 581 244 1985 Philadelphia, PA 1,252 — 814 438 1,252 139 2009 Pottsville, PA 451 2 148 305 453 304 1990 Reading, PA 750 49 — 799 799 799 1989 Ashaway, RI 619 — 402 217 619 105 2004 Barrington, RI 490 180 319 351 670 233 1985 East Providence, RI 2,298 (1,687 ) 89 522 611 — 1985 N. Providence, RI 542 159 353 348 701 219 1985 Austin, TX 462 — 274 188 462 119 2007 Austin, TX 2,368 — 738 1,630 2,368 730 2007 Austin, TX 3,511 — 1,595 1,916 3,511 868 2007 Bedford, TX 353 — 113 240 353 164 2007 Ft Worth, TX 2,115 — 866 1,249 2,115 633 2007 Garland, TX 3,296 — 245 3,051 3,296 286 2014 Garland, TX 4,439 — 439 4,000 4,439 392 2014 Harker Heights, TX 2,051 (9 ) 579 1,463 2,042 1,081 2007 Houston, TX 1,689 — 224 1,465 1,689 623 2007 Houston, TX 2,803 — 535 2,268 2,803 17 2016 Keller, TX 2,507 — 996 1,511 2,507 719 2007 Lewisville, TX 494 — 110 384 494 204 2008 Midlothian, TX 429 — 72 357 429 208 2007 Port Arthur, TX 2,648 — 505 2,143 2,648 17 2016 San Marcos, TX 1,954 — 251 1,703 1,954 745 2007 Temple, TX 2,406 (11 ) 1,205 1,190 2,395 580 2007 The Colony, TX 4,396 — 337 4,059 4,396 1,675 2007 Waco, TX 3,884 — 894 2,990 3,884 1,465 2007 Alexandria, VA 649 — 649 — 649 — 2013 Alexandria, VA 656 — 409 247 656 56 2013 Alexandria, VA 712 — 712 — 712 — 2013 Alexandria, VA 735 — 735 — 735 — 2013 Alexandria, VA 1,327 — 1,327 — 1,327 — 2013 Alexandria, VA 1,388 — 1,020 368 1,388 85 2013 Alexandria, VA 1,582 — 1,150 432 1,582 91 2013 Alexandria, VA 1,757 — 1,313 444 1,757 99 2013 Annandale, VA 1,718 — 1,718 — 1,718 — 2013 Arlington, VA 1,083 — 1,083 — 1,083 — 2013 Arlington, VA 1,464 — 1,085 379 1,464 81 2013 Arlington, VA 2,014 — 1,516 498 2,014 104 2013 Arlington, VA 2,062 — 1,603 459 2,062 95 2013 Ashland, VA 840 — 840 — 840 — 2005 Chesapeake, VA 780 (186 ) 398 196 594 48 1990 Chesapeake, VA 1,004 110 385 729 1,114 647 1990 Fairfax, VA 1,825 — 1,190 635 1,825 132 2013 Fairfax, VA 2,078 — 1,365 713 2,078 128 2013 Fairfax, VA 3,348 — 2,351 997 3,348 195 2013 Fairfax, VA 4,454 — 3,370 1,084 4,454 213 2013 Farmville, VA 1,227 — 622 605 1,227 285 2005 Fredericksburg, VA 1,279 — 469 810 1,279 381 2005 Fredericksburg, VA 1,289 24 798 515 1,313 247 2005 Fredericksburg, VA 1,716 — 996 720 1,716 339 2005 Fredericksburg, VA 3,623 — 2,828 795 3,623 374 2005 Glen Allen, VA 1,037 — 412 625 1,037 294 2005 Glen Allen, VA 1,077 — 322 755 1,077 355 2005 King William, VA 1,688 — 1,068 620 1,688 292 2005 Mechanicsville, VA 903 — 273 630 903 296 2005 Mechanicsville, VA 957 — 324 633 957 323 2005 Mechanicsville, VA 1,043 — 223 820 1,043 386 2005 Mechanicsville, VA 1,125 — 505 620 1,125 292 2005 Mechanicsville, VA 1,476 — 876 600 1,476 282 2005 Mechanicsville, VA 1,677 — 1,157 520 1,677 245 2005 Montpelier, VA 2,481 (114 ) 1,612 755 2,367 355 2005 Norfolk, VA 535 6 311 230 541 230 1990 Petersburg, VA 1,441 — 816 625 1,441 294 2005 Portsmouth, VA 562 34 222 374 596 363 1990 Richmond, VA 1,132 (41 ) 506 585 1,091 275 2005 Ruther Glen, VA 466 — 31 435 466 205 2005 Sandston, VA 722 — 102 620 722 292 2005 Spotsylvania, VA 1,290 — 490 800 1,290 376 2005 Springfield, VA 4,257 — 2,969 1,288 4,257 250 2013 Auburn, WA 3,022 — 1,965 1,057 3,022 99 2015 Bellevue, WA 1,725 — 886 839 1,725 79 2015 Chehalis, WA 1,176 — 313 863 1,176 89 2015 Colfax, WA 4,800 — 3,611 1,189 4,800 112 2015 Federal Way, WA 4,218 — 2,973 1,245 4,218 126 2015 Fife, WA 1,181 — 414 767 1,181 78 2015 Kent, WA 2,900 — 2,066 834 2,900 85 2015 Monroe, WA 2,792 — 1,556 1,236 2,792 119 2015 Port Orchard, WA 2,019 — 161 1,858 2,019 149 2015 Puyallup, WA 831 — 172 659 831 72 2015 Puyallup, WA 2,035 — 465 1,570 2,035 145 2015 Puyallup, WA 4,050 — 2,394 1,656 4,050 190 2015 Renton, WA 1,485 — 952 533 1,485 68 2015 Seattle, WA 346 — 346 — 346 — 2015 Seattle, WA 717 — 193 524 717 47 2015 Seattle, WA 1,884 — 1,223 661 1,884 60 2015 Silverdale, WA 2,178 — 1,217 961 2,178 97 2015 Snohomish, WA 955 — 955 — 955 — 2015 South Bend, WA 760 — 121 639 760 56 2015 Spokane, WA 346 — 346 — 346 — 2015 Tacoma, WA 518 — 518 — 518 — 2015 Tacoma, WA 671 — 671 — 671 — 2015 Tenino, WA 937 — 219 718 937 64 2015 Vancouver, WA 1,214 — 163 1,051 1,214 84 2015 Wilbur, WA 629 — 153 476 629 47 2015 Miscellaneous 32,937 11,470 14,749 29,658 44,407 19,388 various $ 720,099 $ 62,067 $ 474,232 $ 307,934 $ 782,166 $ 120,576 1) Initial cost of leasehold or acquisition investment to company represents the aggregate of the cost incurred during the year in which we purchased the property for owned properties or purchased a leasehold interest in leased properties. Cost capitalized subsequent to initial investment includes investments made in previously leased properties prior to their acquisition. 2) Depreciation of real estate is computed on the straight-line method based upon the estimated useful lives of the assets, which generally range from 16 to 25 years for buildings and improvements, or the term of the lease if shorter. Leasehold interests are amortized over the remaining term of the underlying lease. 3) The aggregate cost for federal income tax purposes was approximately $617,464,000 at December 31, 2016.

SCHEDULE IV - Mortgage Loans on

SCHEDULE IV - Mortgage Loans on Real Estate	12 Months Ended
	Dec. 31, 2016
Mortgage Loans on Real Estate [Abstract]
SCHEDULE IV - Mortgage Loans on Real Estate	GETTY REALTY CORP. and SUBSIDIARIES As of December 31, 2016 (in thousands) Type of Loan/Borrower Description Location(s) Interest Final Periodic Prior Face Value Amount of Mortgage Loans: Borrower A Seller financing Horsham, PA 10.0 % 7/2024 P & I — $ 237 $ 146 Borrower B Seller financing Green Island, NY 11.0 % 8/2018 P & I — 298 75 Borrower C Seller financing Concord, NH 9.5 % 8/2028 P & I — 210 165 Borrower D Seller financing Irvington, NJ 10.0 % 7/2022 P & I — 300 202 Borrower E Seller financing Kernersville/Lexington, NC 8.0 % 7/2026 P & I — 568 291 Borrower F Seller financing Wantagh, NY 9.0 % 5/2032 P & I — 455 409 Borrower G Seller financing Fullerton Hts, MD 9.0 % 5/2019 P & I — 225 35 Borrower H Seller financing Springfield, MA 9.0 % 7/2019 P & I — 131 108 Borrower I Seller financing E. Patchogue, NY 9.0 % 8/2019 P & I — 200 181 Borrower J Seller financing Union City, NJ 9.0 % 9/2019 P & I — 800 740 Borrower K Seller financing Bronx, NY 9.0 % 12/2019 P & I — 240 121 Borrower L Seller financing Seaford, NY 9.0 % 1/2020 P & I — 488 446 Borrower M Seller financing Spotswood, NJ 9.0 % 1/2020 P & I — 306 280 Borrower N Seller financing Freeport, NY 9.0 % 5/2020 P & I — 206 191 Borrower O Seller financing Pleasant Valley, NY 9.0 % 9/2020 P & I — 230 214 Borrower P Seller financing Fairhaven, MA 9.0 % 9/2020 P & I — 458 427 Borrower Q Seller financing Baldwin, NY 9.0 % 9/2020 P & I — 300 282 Borrower R Seller financing Leicester, MA 9.0 % 10/2020 P & I — 268 251 Borrower S Seller financing Valley Cottage, NY 9.0 % 10/2020 P & I — 431 403 Borrower T Seller financing Ephrata, PA 9.0 % 10/2020 P & I — 265 247 Borrower U Seller financing Piscataway, NJ 9.0 % 11/2020 P & I — 121 103 Borrower V Seller financing Westfield, MA 9.0 % 11/2020 P & I — 165 155 Borrower W Seller financing Wilmington, DE 9.0 % 11/2020 P & I — 84 79 Borrower X Seller financing Gettysburg, PA 9.0 % 11/2020 P & I — 69 64 Borrower Y Seller financing Kenmore, NY 9.0 % 12/2020 P & I — 74 70 Borrower Z Seller financing Stafford Springs, CT 9.0 % 1/2021 P & I — 232 218 Borrower AA Seller financing Latham, NY 9.0 % 1/2021 P & I — 169 159 Borrower AB Seller financing Magnolia, NJ 9.0 % 6/2020 P & I — 53 49 Borrower AC Seller financing Colonia, NJ 9.0 % 7/2020 P & I — 320 297 Borrower AD Seller financing Jersey City, NJ 9.0 % 7/2018 P & I — 500 464 Borrower AE Seller financing Elmont, NY 9.0 % 10/2021 P & I — 450 384 Borrower AF Seller financing Leola, PA 9.0 % 3/2020 P & I — 220 202 Borrower AG Seller financing Lititz/Rothsville, PA 9.0 % 3/2020 P & I — 180 166 Borrower AH Seller financing Bayonne, NJ 9.0 % 3/2020 P & I — 308 283 Borrower AI Seller financing Ballston, NY 9.0 % 5/2020 P & I — 225 208 Borrower AJ Seller financing Waterbury, CT 9.0 % 2/2021 P & I — 171 161 Borrower AK Seller financing White Plains, NY 9.0 % 2/2021 P & I — 444 418 Borrower AL Seller financing Scarsdale, NY 9.0 % 11/2025 P & I — 337 317 Borrower AM Seller financing York, PA 9.0 % 2/2021 P & I — 102 96 Borrower AN Seller financing Bristol, CT 9.0 % 3/2021 P & I — 230 217 Borrower AO Seller financing Belleville, NJ 9.0 % 3/2021 P & I — 315 297 Borrower AP Seller financing Southbridge, MA 9.0 % 3/2021 P & I — 300 283 Borrower AQ Seller financing Ridgefield, NJ 9.0 % 4/2021 P & I — 172 163 Borrower AR Seller financing Glenville, NY 9.0 % 4/2021 P & I — 325 308 Borrower AS Seller financing Great Barrington, MA 9.0 % 4/2021 P & I — 58 55 Borrower AT Seller financing Rockland, MA 9.0 % 4/2021 P & I — 134 127 Borrower AU Seller financing Williamstown, NJ 9.0 % 4/2021 P & I — 42 40 Borrower AV Seller financing Belford, NJ 9.0 % 4/2021 P & I — 134 127 Borrower AW Seller financing Swedesboro, NJ 9.0 % 4/2021 P & I — 77 72 Borrower AX Seller financing Hatboro, PA 9.0 % 4/2021 P & I — 84 80 Borrower AY Seller financing Middlesex, NJ 9.0 % 5/2021 P & I — 255 242 Borrower AZ Seller financing Coxsackie, NY 9.0 % 7/2021 P & I — 153 146 Borrower BA Seller financing Newburgh, NY 9.0 % 9/2021 P & I — 394 376 Borrower BB Seller financing Providence, RI 9.0 % 9/2021 P & I — 184 175 Borrower BC Seller financing Warwick, RI 9.0 % 10/2021 P & I — 357 342 Borrower BD Seller financing New Bedford, MA 9.0 % 10/2021 P & I — 363 347 Borrower BE Seller financing Fitchburg, MA 9.0 % 10/2021 P & I — 187 179 Borrower BF Seller financing Queensbury, NY 9.0 % 11/2021 P & I — 176 169 Borrower BG Seller financing Worcester, MA 9.0 % 11/2021 P & I — 237 227 Borrower BH Seller financing Westfield, MA 9.0 % 11/2021 P & I — 303 291 Borrower BI Seller financing S. Yarmouth, MA 9.0 % 1/2022 P & I — 275 265 Borrower BJ Seller financing Harwich Port, MA 9.0 % 1/2022 P & I — 293 282 Borrower BK Seller financing Nyack, NY 9.0 % 9/2022 P & I — 253 248 Borrower BL Seller financing Norwalk, CT 9.0 % 4/2022 P & I — 319 308 Borrower BM Seller financing Hadley, MA 9.0 % 7/2022 P & I — 78 75 Borrower BN Seller financing Clinton, MA 9.0 % 3/2022 P & I — 158 140 Borrower BO Seller financing Worcester, MA 9.0 % 2/2022 P & I — 210 202 Borrower BP Seller financing Pelham, NH 9.0 % 01/2023 P & I — 73 71 Borrower BQ Seller financing Brewster, NY 9.0 % 10/2022 P & I — 554 542 Borrower BR Seller financing Brewster, NY 9.0 % 8/2022 P & I — 333 324 Borrower BS Seller financing Cranston, RI 9.0 % 8/2022 P & I — 153 149 Borrower BT Seller financing Pawtucket, RI 9.0 % 1/2023 P & I — 31 30 Borrower BU Seller financing E. Providence, RI 9.0 % 2/2022 P & I — 186 179 Borrower BV Seller financing McConnellsburg, PA 9.0 % 1/2023 P & I — 38 38 Borrower BW Seller financing Billerica, MA 9.0 % 03/2023 P & I — 98 96 Borrower BX Seller financing Oxford, MA 9.0 % 03/2023 P & I — 86 84 Borrower BY Seller financing Colonie, NY 9.0 % 08/2023 P & I — 143 142 Borrower BZ Seller financing Malta, NY 9.0 % 03/2023 P & I — 572 564 Borrower CA Seller financing Cairo, NY 9.0 % 08/2023 P & I — 113 112 Borrower CB Seller financing Central Islip, NY 9.0 % 06/2023 P & I — 780 773 Borrower CC Seller financing Pottsville, PA 9.0 % 03/2023 P & I — 23 23 20,089 18,017 Note receivable Purchase/leaseback Various-NY 9.5 % 1/2021 I (b) 18,400 14,720 Total (c) $ 38,489 $ 32,737 (a) P & I = Principal and interest paid monthly. (b) I = Interest only paid monthly with principal deferred. (c) The aggregate cost for federal income tax purposes approximates the amount of principal unpaid. We review payment status to identify performing versus non-performing loans. Interest income on performing loans is accrued as earned. A non-performing loan is placed on non-accrual status when it is probable that the borrower may be unable to meet interest payments as they become due. Generally, loans 90 days or more past due are placed on non-accrual status unless there is sufficient collateral to assure collectability of principal and interest. Upon the designation of non-accrual status, all unpaid accrued interest is reserved against through current income. Interest income on non-performing loans is generally recognized on a cash basis. The summarized changes in the carrying amount of mortgage loans are as follows: 2016 2015 2014 Balance at January 1, $ 48,455 $ 34,226 $ 28,793 Additions: New mortgage loans 1,814 17,876 8,278 Deductions: Loan repayments (16,714 ) (2,883 ) (2,294 ) Collection of principal (818 ) (764 ) (489 ) Write-off of loan balance — — (62 ) Balance at December 31, $ 32,737 $ 48,455 $ 34,226

Summary of Significant Accoun23

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The consolidated financial statements include the accounts of Getty Realty Corp. and its wholly-owned subsidiaries. The accompanying consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”). We do not distinguish our principal business or our operations on a geographical basis for purposes of measuring performance. We manage and evaluate our operations as a single segment. All significant intercompany accounts and transactions have been eliminated.
Use of Estimates, Judgments and Assumptions	Use of Estimates, Judgments and Assumptions The consolidated financial statements have been prepared in conformity with GAAP, which requires management to make estimates, judgments and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and revenues and expenses during the period reported. Estimates, judgments and assumptions underlying the accompanying consolidated financial statements include, but are not limited to, real estate, receivables, deferred rent receivable, direct financing leases, depreciation and amortization, impairment of long-lived assets, environmental remediation costs, environmental remediation obligations, litigation, accrued liabilities, income taxes and the allocation of the purchase price of properties acquired to the assets acquired and liabilities assumed. Application of these estimates and assumptions requires exercise of judgment as to future uncertainties and, as a result, actual results could differ materially from these estimates.
Reclassifications	Reclassifications Beginning in 2016 Tenant reimbursements, which were previously included in Revenue from rental properties, were excluded from Revenue from rental properties. Certain other amounts in prior years’ financial statements have been reclassified to conform to the presentation used in the year ended December 31, 2016.
Real Estate	Real Estate Real estate assets are stated at cost less accumulated depreciation and amortization. Upon acquisition of real estate and leasehold interests, we estimate the fair value of acquired tangible assets (consisting of land, buildings and improvements) “as if vacant” and identified intangible assets and liabilities (consisting of leasehold interests, above-market and below-market leases, in-place leases and tenant relationships) and assumed debt. Based on these estimates, we allocate the estimated fair value to the applicable assets and liabilities. Fair value is determined based on an exit price approach, which contemplates the price that would be received from the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. We expense transaction costs associated with business combinations in the period incurred. See Note 12 for additional information regarding property acquisitions. We capitalize direct costs, including costs such as construction costs and professional services, and indirect costs associated with the development and construction of real estate assets while substantive activities are ongoing to prepare the assets for their intended use. The capitalization period begins when development activities are underway and ends when it is determined that the asset is substantially complete and ready for its intended use. When real estate assets are sold or retired, the cost and related accumulated depreciation and amortization is eliminated from the respective accounts and any gain or loss is credited or charged to income. We evaluate real estate sale transactions where we provide seller financing to determine sale and gain recognition in accordance with GAAP. Expenditures for maintenance and repairs are charged to income when incurred.
Depreciation and Amortization	Depreciation and Amortization Depreciation of real estate is computed on the straight-line method based upon the estimated useful lives of the assets, which generally range from 16 to 25 years for buildings and improvements, or the term of the lease if shorter. Asset retirement costs are depreciated over the shorter of the remaining useful lives of USTs or ten years for asset retirement costs related to environmental remediation obligations, which costs are attributable to the group of assets identified at a property. Leasehold interests and in-place
Direct Financing Leases	Direct Financing Leases Income under direct financing leases is included in revenues from rental properties and is recognized over the lease terms using the effective interest rate method which produces a constant periodic rate of return on the net investments in the leased properties. The investments in direct financing leases are increased for interest income earned and amortized over the life of the leases and reduced by the receipt of lease payments. We consider direct financing leases to be past-due or delinquent when a contractually required payment is not remitted in accordance with the provisions of the underlying agreement. We evaluate each account individually and set up an allowance when, based upon current information and events, it is probable that we will be unable to collect all amounts due according to the existing contractual terms, and the amount can be reasonably estimated. We review our direct financing leases at least annually to determine whether there has been an-other-than-temporary decline in the current estimate of residual value of the property. The residual value is our estimate of what we could realize upon the sale of the property at the end of the lease term, based on market information and third-party estimates where available. If this review indicates that a decline in residual value has occurred that is other-than-temporary, we recognize an impairment charge. There were no impairments of any of our direct financing leases during the years ended December 31, 2016 and 2015. When we enter into a contract to sell properties that are recorded as direct financing leases, we evaluate whether we believe it is probable that the disposition will occur. If we determine that the disposition is probable and therefore the property’s holding period is reduced, we record an allowance for credit losses to reflect the change in the estimate of the undiscounted future rents. Accordingly, the net investment balance is written down to fair value.
Notes and Mortgages Receivable	Notes and Mortgages Receivable Notes and mortgages receivable consists of loans originated by us in conjunction with property dispositions and funding provided to tenants in conjunction with property acquisitions. Notes and mortgages receivable are recorded at stated principal amounts. We evaluate the collectability of both interest and principal on each loan to determine whether it is impaired. A loan is considered to be impaired when, based upon current information and events, it is probable that we will be unable to collect all amounts due under the existing contractual terms. When a loan is considered to be impaired, the amount of loss is calculated by comparing the recorded investment to the fair value determined by discounting the expected future cash flows at the loan’s effective interest rate or to the fair value of the underlying collateral, if the loan is collateralized. Interest income on performing loans is accrued as earned. Interest income on impaired loans is recognized on a cash basis. We do not provide for an additional allowance for loan losses based on the grouping of loans as we believe the characteristics of the loans are not sufficiently similar to allow an evaluation of these loans as a group for a possible loan loss allowance. As such, all of our loans are evaluated individually for impairment purposes. There were no impairments related to our notes and mortgages receivable during the years ended December 31, 2016 and 2015.
Cash and Cash Equivalents	Cash and Cash Equivalents We consider all highly liquid investments with a maturity of three months or less when purchased to be cash equivalents. Our cash and cash equivalents are held in the custody of financial institutions, and these balances, at times, exceed federally insurable limits.
Restricted Cash	Restricted Cash Restricted cash consists of cash that is contractually restricted or held in escrow pursuant to various agreements with counterparties. At December 31, 2016, restricted cash of $671,000 consisted of security deposits received from our tenants. At December 31, 2015, restricted cash of $409,000 consisted of an escrow account established to guarantee our environmental remediation obligations at several of our properties.
Revenue Recognition and Deferred Rent Receivable	Revenue Recognition and Deferred Rent Receivable Minimum lease payments from operating leases are recognized on a straight-line basis over the term of the leases. The cumulative difference between lease revenue recognized under this method and the contractual lease payment terms is recorded as deferred rent receivable on our consolidated balance sheets. We reserve for a portion of the recorded deferred rent receivable if circumstances indicate that it is not reasonable to assume that the tenant will make all of its contractual lease payments when due during the current term of the lease. We make estimates of the collectability of our accounts receivable related to revenue from rental properties. We analyze accounts receivable and historical bad debt levels, customer creditworthiness and current economic trends when evaluating the adequacy of the allowance for doubtful accounts. Additionally, with respect to tenants in bankruptcy, we estimate the expected recovery through bankruptcy claims and increase the allowance for amounts deemed uncollectible. If our assumptions regarding the collectability of accounts receivable prove incorrect, we could experience write-offs of the accounts receivable or deferred rent receivable in excess of our allowance for doubtful accounts. The present value of the difference between the fair market rent and the contractual rent for above-market and below-market leases at the time properties are acquired is amortized into revenues from rental properties over the remaining terms of the in-place leases. Lease termination fees are recognized as other income when earned upon the termination of a tenant’s lease and relinquishment of space in which we have no further obligation to the tenant.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets Assets are written down to fair value when events and circumstances indicate that the assets might be impaired and the projected undiscounted cash flows estimated to be generated by those assets are less than the carrying amount of those assets. Assets held for disposal are written down to fair value less estimated disposition costs. We recorded impairment charges aggregating $12,814,000, $17,361,000 and $21,534,000 for the years ended December 31, 2016, 2015 and 2014, respectively, in continuing and discontinued operations. Our estimated fair values, as they relate to property carrying values were primarily based upon (i) estimated sales prices from third-party offers based on signed contracts, letters of intent or indicative bids, for which we do not have access to the unobservable inputs used to determine these estimated fair values, and/or consideration of the amount that currently would be required to replace the asset, as adjusted for obsolescence (this method was used to determine $3,041,000 of the $12,814,000 in impairments recognized during the year ended December 31, 2016) and (ii) discounted cash flow models (this method was used to determine $1,660,000 of the $12,814,000 in impairments recognized during the year ended December 31, 2016). During the year ended December 31, 2016, we recorded $8,113,000 of the $12,814,000 in impairments recognized due to the accumulation of asset retirement costs as a result of changes in estimates associated with our estimated environmental liabilities which increased the carrying value of certain properties in excess of their fair value. The impairment charges recorded during the years ended December 31, 2016 and 2015, were attributable to the effect of adding asset retirement costs due to changes in estimates associated with our environmental liabilities, which increased the carrying value of certain properties in excess of their fair value, reductions in estimated undiscounted cash flows expected to be received during the assumed holding period for certain of our properties and reductions in estimated sales prices from third-party offers based on signed contracts, letters of intent or indicative bids for certain of our properties. The estimated fair value of real estate is based on the price that would be received from the sale of the property in an orderly transaction between market participants at the measurement date. In general, we consider multiple internal valuation techniques when measuring the fair value of a property, all of which are based on unobservable inputs and assumptions that are classified within Level 3 of the Fair Value Hierarchy. These unobservable inputs include assumed holding periods ranging up to 15 years, assumed average rent increases of 2.0% annually, income capitalized at a rate of 8.0% and cash flows discounted at a rate of 7.0%. These assessments have a direct impact on our net income because recording an impairment loss results in an immediate negative adjustment to net income. The evaluation of anticipated cash flows is highly subjective and is based in part on assumptions regarding future rental rates and operating expenses that could differ materially from actual results in future periods. Where properties held for use have been identified as having a potential for sale, additional judgments are required related to the determination as to the appropriate period over which the projected undiscounted cash flows should include the operating cash flows and the amount included as the estimated residual value. This requires significant judgment. In some cases, the results of whether impairment is indicated are sensitive to changes in assumptions input into the estimates, including the holding period until expected sale.
Deferred Gain	Deferred Gain On August 3, 2015, we terminated our unitary triple-net lease (the “Ramoco Lease”) with Hanuman Business, Inc. (d/b/a “Ramoco”), and sold to Ramoco affiliates 48 of the 61 properties that had been subject to the Ramoco Lease. The total consideration for the 48 properties we sold to Ramoco affiliates, including a seller financing mortgage of $13,900,000, was $15,000,000. In accordance with ASC 360-20, Property, Plant and Equipment—Real Estate Sales, we evaluated the accounting for the gain on sales of these assets, noting that the buyer’s initial investment did not represent the amount required for recognition of the gain by the full accrual method. Accordingly, we recorded a deferred gain of $3,900,000 related to the Ramoco sale. The deferred gain was recorded in accounts payable and accrued liabilities on our balance sheet at December 31, 2015. On April 28, 2016, Ramoco affiliates repaid the entire seller financing mortgage and, as a result, the deferred gain was recognized in our consolidated statements of operations for the year ended December 31, 2016.
Fair Value Hierarchy	Fair Value Hierarchy The preparation of consolidated financial statements in accordance with GAAP requires management to make estimates of fair value that affect the reported amounts of assets and liabilities and disclosure of assets and liabilities at the date of the consolidated financial statements and revenues and expenses during the period reported using a hierarchy (the “Fair Value Hierarchy”) that prioritizes the inputs to valuation techniques used to measure the fair value. The Fair Value Hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The levels of the Fair Value Hierarchy are as follows: “Level 1” – inputs that reflect unadjusted quoted prices in active markets for identical assets or liabilities that we have the ability to access at the measurement date; “Level 2” – inputs other than quoted prices that are observable for the asset or liability either directly or indirectly, including inputs in markets that are not considered to be active; and “Level 3” – inputs that are unobservable. Certain types of assets and liabilities are recorded at fair value either on a recurring or non-recurring basis. Assets required or elected to be marked-to-market and reported at fair value every reporting period are valued on a recurring basis. Other assets not required to be recorded at fair value every period may be recorded at fair value if a specific provision or other impairment is recorded within the period to mark the carrying value of the asset to market as of the reporting date. Such assets are valued on a non-recurring basis. We have mutual fund assets that are measured at fair value on a recurring basis using Level 1 inputs. We have a Supplemental Retirement Plan for executives. The amounts held in trust under the Supplemental Retirement Plan using Level 2 inputs may be used to satisfy claims of general creditors in the event of our or any of our subsidiaries’ bankruptcy. We have liability to the executives participating in the Supplemental Retirement Plan for the participant account balances equal to the aggregate of the amount invested at the executives’ direction and the income earned in such mutual funds. We have certain real estate assets that are measured at fair value on a non-recurring basis using Level 3 inputs as of December 31, 2016 and 2015, of $780,000 and $1,264,000, respectively, where impairment charges have been recorded. Due to the subjectivity inherent in the internal valuation techniques used in estimating fair value, the amounts realized from the sale of such assets may vary significantly from these estimates. The following summarizes as of December 31, 2016, our assets and liabilities measured at fair value on a recurring basis by level within the Fair Value Hierarchy: (in thousands) Level 1 Level 2 Level 3 Total Assets: Mutual funds $ 565 $ — $ — $ 565 Liabilities: Deferred compensation $ — $ 565 $ — $ 565 The following summarizes as of December 31, 2015, our assets and liabilities measured at fair value on a recurring basis by level within the Fair Value Hierarchy: (in thousands) Level 1 Level 2 Level 3 Total Assets: Mutual funds $ 888 $ — $ — $ 888 Liabilities: Deferred compensation $ — $ 888 $ — $ 888
Fair Value Disclosure of Financial Instruments	Fair Value Disclosure of Financial Instruments All of our financial instruments are reflected in the accompanying consolidated balance sheets at amounts which, in our estimation based upon an interpretation of available market information and valuation methodologies, reasonably approximate their fair values, except those separately disclosed in the notes to our consolidated financial statements.
Environmental Remediation Obligations	Environmental Remediation Obligations We record the fair value of a liability for an environmental remediation obligation as an asset and liability when there is a legal obligation associated with the retirement of a tangible long-lived asset and the liability can be reasonably estimated. Environmental remediation obligations are estimated based on the level and impact of contamination at each property. The accrued liability is the aggregate of the best estimate of the fair value of cost for each component of the liability. The accrued liability is net of recoveries of environmental costs from state UST remediation funds with respect to both past and future environmental spending based on estimated recovery rates developed from prior experience with the funds. Net environmental liabilities are currently measured based on their expected future cash flows which have been adjusted for inflation and discounted to present value. We accrue for environmental liabilities that we believe are allocable to other potentially responsible parties if it becomes probable that the other parties will not pay their environmental remediation obligations.
Litigation	Litigation Legal fees related to litigation are expensed as legal services are performed. We provide for litigation accruals, including certain litigation related to environmental matters, when it is probable that a liability has been incurred and a reasonable estimate of the liability can be made. If the estimate of the liability can only be identified as a range, and no amount within the range is a better estimate than any other amount, the minimum of the range is accrued for the liability. We accrue our share of environmental litigation liabilities based on our assumptions of the ultimate allocation method and share that will be used when determining our share of responsibility.
Income Taxes	Income Taxes We and our subsidiaries file a consolidated federal income tax return. Effective January 1, 2001, we elected to qualify, and believe we are operating so as to qualify, as a REIT for federal income tax purposes. Accordingly, we generally will not be subject to federal income tax on qualifying REIT income, provided that distributions to our shareholders equal at least the amount of our taxable income as defined under the Internal Revenue Code. We accrue for uncertain tax matters when appropriate. The accrual for uncertain tax positions is adjusted as circumstances change and as the uncertainties become more clearly defined, such as when audits are settled or exposures expire. Tax returns for the years 2013, 2014 and 2015, and tax returns which will be filed for the year ended 2016, remain open to examination by federal and state tax jurisdictions under the respective statute of limitations.
New Accounting Pronouncements	New Accounting Pronouncements In May 2014, the FASB issued Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Customers (Topic 606) In August 2014, the FASB issued ASU 2014-15, Presentation of Financial Statements – Going Concern: Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) On March 30, 2016, the FASB issued ASU 2016-09, Compensation—Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting On May 9, 2016, the FASB issued ASU 2016-12, Narrow-Scope Improvements and Practical Expedients On June 16, 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurements of Credit Losses on Financial Instruments In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash In January 2017, the FASB issued ASU 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business

Summary of Significant Accoun24

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis	The following summarizes as of December 31, 2016, our assets and liabilities measured at fair value on a recurring basis by level within the Fair Value Hierarchy: (in thousands) Level 1 Level 2 Level 3 Total Assets: Mutual funds $ 565 $ — $ — $ 565 Liabilities: Deferred compensation $ — $ 565 $ — $ 565 The following summarizes as of December 31, 2015, our assets and liabilities measured at fair value on a recurring basis by level within the Fair Value Hierarchy: (in thousands) Level 1 Level 2 Level 3 Total Assets: Mutual funds $ 888 $ — $ — $ 888 Liabilities: Deferred compensation $ — $ 888 $ — $ 888

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2016
Leases [Abstract]
Future Contractual Minimum Annual Rentals Receivable	Future contractual minimum annual rentals receivable from our tenants, which have terms in excess of one year as of December 31, 2016, are as follows (in thousands): YEAR ENDING DECEMBER 31, OPERATING DIRECT TOTAL 2017 $ 81,784 $ 12,622 $ 94,406 2018 81,508 12,872 94,380 2019 81,346 13,079 94,425 2020 76,936 13,375 90,311 2021 71,523 13,552 85,075 Thereafter $ 569,111 $ 101,564 $ 670,675

Credit Agreement and Senior U26

Credit Agreement and Senior Unsecured Notes (Tables)	12 Months Ended
	Dec. 31, 2016
Debt Disclosure [Abstract]
Schedule of Maturity Dates and Amounts Outstanding Under Credit Agreement and Restated Prudential Note Purchase Agreement	As of December 31, 2016, the maturity dates and amounts outstanding under the Credit Agreement and the Restated Prudential Note Purchase Agreement are as follows: Maturity Date Amount Credit Agreement—Revolving Facility June 2018 $ 75,000,000 Credit Agreement—Term Loan June 2020 $ 50,000,000 Restated Prudential Note Purchase Agreement—Series A Notes February 2021 $ 100,000,000 Restated Prudential Note Purchase Agreement—Series B Notes June 2023 $ 75,000,000

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2016
Equity [Abstract]
Summary of Changes in Shareholders' Equity	A summary of the changes in shareholders’ equity for the years ended December 31, 2016, 2015 and 2014 is as follows (in thousands, except per share amounts): COMMON STOCK ADDITIONAL PAID-IN DIVIDENDS PAID IN EXCESS SHARES AMOUNT CAPITAL OF EARNINGS TOTAL BALANCE, DECEMBER 31, 2013 33,397 $ 334 $ 462,397 $ (47,640 ) $ 415,091 Net earnings 23,418 23,418 Dividends declared — $0.960 per share (32,402 ) (32,402 ) Stock-based compensation 20 — 917 — 917 BALANCE, DECEMBER 31, 2014 33,417 $ 334 $ 463,314 $ (56,624 ) $ 407,024 Net earnings 37,410 37,410 Dividends declared — $1.15 per share (38,897 ) (38,897 ) Stock-based compensation 5 — 1,024 — 1,024 BALANCE, DECEMBER 31, 2015 33,422 $ 334 $ 464,338 $ (58,111 ) $ 406,561 Net earnings 38,411 38,411 Dividends declared — $1.03 per share (35,385 ) (35,385 ) Shares issued pursuant to ATM Program, net 653 7 14,879 — 14,886 Shares issued pursuant to stock dividends 256 3 4,409 — 4,412 Shares issued pursuant to dividend reinvestment 43 — 897 — 897 Stock-based compensation 19 — 1,136 — 1,136 BALANCE, DECEMBER 31, 2016 34,393 $ 344 $ 485,659 $ (55,085 ) $ 430,918

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2016
Postemployment Benefits [Abstract]
Schedule of Activity Relating to Restricted Stock Units Outstanding	The following is a schedule of the activity relating to RSUs outstanding: NUMBER OF FAIR VALUE AMOUNT AVERAGE RSUs OUTSTANDING AT DECEMBER 31, 2013 295,850 Granted 72,125 $ 1,386,000 $ 19.21 Settled (19,550 ) $ 360,000 $ 18.43 Cancelled (15,900 ) $ 293,000 $ 18.44 RSUs OUTSTANDING AT DECEMBER 31, 2014 332,525 Granted 79,250 $ 1,429,700 $ 18.04 Settled (8,160 ) $ 144,300 $ 17.68 Cancelled (3,240 ) $ 55,600 $ 17.16 RSUs OUTSTANDING AT DECEMBER 31, 2015 400,375 Granted 86,600 $ 1,593,400 $ 18.40 Settled (34,650 ) $ 635,800 $ 18.35 Cancelled (22,550 ) $ 415,400 $ 18.42 RSUs OUTSTANDING AT DECEMBER 31, 2016 429,775
Schedule of Vesting Activity Relating to Restricted Stock Units Outstanding	The following is a schedule of the vesting activity relating to RSUs outstanding: NUMBER FAIR RSUs VESTED AT DECEMBER 31, 2013 136,135 Vested 38,270 $ 697,000 Settled (19,550 ) $ 360,000 RSUs VESTED AT DECEMBER 31, 2014 154,855 Vested 55,649 $ 954,400 Settled (8,160 ) $ 144,300 RSUs VESTED AT DECEMBER 31, 2015 202,344 Vested 54,125 $ 1,379,600 Settled (34,650 ) $ 635,800 RSUs VESTED AT DECEMBER 31, 2016 221,819

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	12 Months Ended
	Dec. 31, 2016
Earnings Per Share [Abstract]
Schedule of Earnings Per Share	Basic and diluted earnings per common share gives effect, utilizing the two-class method, to the potential dilution from the issuance of common shares in settlement of restricted stock units (“RSU” or “RSUs”) which provide for non-forfeitable dividend equivalents equal to the dividends declared per common share. Basic and diluted earnings per common share is computed by dividing net earnings less dividend equivalents attributable to RSUs by the weighted-average number of common shares outstanding during the year. Diluted earnings per common share, also gives effect to the potential dilution from the exercise of stock options utilizing the treasury stock method. There were 5,000 stock options excluded from the earnings per share calculations below as they were anti-dilutive as of December 31, 2016, 2015 and 2014, respectively. Year ended December 31, (in thousands): 2016 2015 2014 Earnings from continuing operations $ 42,081 $ 40,370 $ 20,405 Less dividend equivalents attributable to RSUs outstanding (482 ) (460 ) (341 ) Earnings from continuing operations attributable to common shareholders 41,599 39,910 20,064 (Loss) earnings from discontinued operations (3,670 ) (2,960 ) 3,013 Less dividend equivalents attributable to RSUs outstanding — — (50 ) (Loss) earnings from discontinued operations attributable to common shareholders (3,670 ) (2,960 ) 2,963 Net earnings attributable to common shareholders used for basic and diluted earnings per share calculation $ 37,929 $ 36,950 $ 23,027 Weighted average common shares outstanding: Basic and diluted 33,806 33,420 33,409 RSUs outstanding at the end of the period 430 400 333 Basic and diluted earnings per common share $ 1.12 $ 1.11 $ 0.69

Discontinued Operations and A30

Discontinued Operations and Assets Held For Sale (Tables)	12 Months Ended
	Dec. 31, 2016
Discontinued Operations and Disposal Groups [Abstract]
Schedule of Real Estate Held for Sale	Real estate held for sale consisted of the following at December 31, 2016 and 2015: (in thousands) Year ended December 31, 2016 2015 Land $ 117 $ 603 Buildings and improvements 528 997 645 1,600 Accumulated depreciation and amortization — (261 ) Real estate held for sale, net $ 645 $ 1,339
Schedule of Earnings (Loss) from Discontinued Operations	The revenue from rental properties, impairment charges, other operating expenses and gains/losses from dispositions of real estate related to these properties are as follows: Year ended December 31, (in thousands) 2016 2015 2014 Revenues from rental properties $ 5 $ 164 $ 2,372 Impairments (5,926 ) (5,746 ) (8,596 ) Other operating income 2,456 2,283 242 (Loss) from operating activities (3,465 ) (3,299 ) (5,982 ) (Loss) gains from dispositions of real estate (205 ) 339 8,995 (Loss) earnings from discontinued operations $ (3,670 ) $ (2,960 ) $ 3,013

Quarterly Financial Data (Table

Quarterly Financial Data (Tables)	12 Months Ended
	Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]
Summary of Quarterly Results of Operations	The following is a summary of the quarterly results of operations for the years ended December 31, 2016 and 2015 (unaudited as to quarterly information) (in thousands, except per share amounts): THREE MONTHS ENDED YEAR ENDED DECEMBER 31, 2016 MARCH 31, JUNE 30, SEPTEMBER 30, DECEMBER 31, Revenues from rental properties $ 24,388 $ 24,140 $ 24,328 $ 25,083 Earnings from continuing operations 7,842 13,583 9,236 11,420 Net earnings $ 7,703 $ 13,576 $ 8,804 $ 8,328 Diluted earnings per common share: Earnings from continuing operations $ 0.23 $ 0.40 $ 0.27 $ 0.33 Net earnings $ 0.23 $ 0.40 $ 0.26 $ 0.24 YEAR ENDED DECEMBER 31, 2015 MARCH 31, JUNE 30, SEPTEMBER 30, DECEMBER 31, Revenues from rental properties $ 20,413 $ 22,122 $ 24,840 $ 25,514 (Loss) earnings from continuing operations (81 ) 11,503 8,564 20,384 Net (loss) earnings $ (1,137 ) $ 11,619 $ 7,035 $ 19,893 Diluted (loss) earnings per common share: (Loss) earnings from continuing operations $ (0.01 ) $ 0.34 $ 0.25 $ 0.60 Net (loss) earnings $ (0.04 ) $ 0.34 $ 0.21 $ 0.59

Property Acquisitions (Tables)

Property Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2016
Business Combinations [Abstract]
Pro Forma Condensed Financial Information	The unaudited pro forma condensed financial information is not indicative of the results of operations that would have been achieved had the acquisition reflected herein been consummated on the dates indicated or that will be achieved in the future. (in thousands, except per share data) Year ended December 31, 2015 2014 Revenues from continuing operations $ 118,003 $ 117,340 Earnings from continuing operations $ 41,763 $ 22,399 Basic and diluted earnings from continuing operations per common share $ 1.24 $ 0.66

Acquired Intangible Assets (Tab

Acquired Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Amortization for Acquired Intangible Assets	The amortization for acquired intangible assets during the next five years and thereafter, assuming no early lease terminations, is as follows: Above-Market Below-Market In-Place As Lessor: Year ending December 31, 2017 $ 148,000 $ 1,833,000 $ 1,389,000 2018 47,000 1,781,000 1,363,000 2019 30,000 1,701,000 1,342,000 2020 24,000 1,463,000 1,322,000 2021 16,000 1,322,000 1,301,000 Thereafter 179,000 14,439,000 14,267,000 $ 444,000 $ 22,539,000 $ 20,984,000 Below-Market As Lessee: Year ending December 31, 2017 $ 320,000 2018 317,000 2019 312,000 2020 222,000 2021 157,000 Thereafter 755,000 $ 2,083,000

Summary of Significant Accoun34

Summary of Significant Accounting Policies - Additional Information (Detail)	Aug. 03, 2015USD ($)PropertyTenants	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Impairment charges		$ 12,814,000	$ 17,361,000	$ 21,534,000
Maturity period of liquid investments		3 months
Restricted cash		$ 671,000	409,000
Total consideration for properties sold including seller financing	$ 15,000,000
Direct Financing Leases Financing Receivable [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Impairment charges		$ 0	0	$ 0
Buildings and Improvements [Member] | Minimum [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Property plant and equipment useful life		16 years
Buildings and Improvements [Member] | Maximum [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Property plant and equipment useful life		25 years
USTs [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Property plant and equipment useful life		10 years
Estimated Sale Price Method [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Impairment charges		$ 12,814,000
Estimated fair value		3,041,000
Discounted Cash Flow Method [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Impairment charges		12,814,000
Estimated fair value		1,660,000
Accumulation of Asset Retirement Cost Method [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Impairment charges		12,814,000
Estimated fair value		$ 8,113,000
Level 3 [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Assumed holding periods for unobservable inputs		15 years
Assumed annual average rent increases for unobservable inputs		2.00%
Rate of income capitalization for unobservable inputs		8.00%
Cash flows discounted rate for unobservable inputs		7.00%
Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Impaired real estate assets measured at fair value		$ 780,000	1,264,000
Notes and Mortgages Receivable [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Impairment charges		0	0
Ramoco Affiliates [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of properties sold to Ramoco affiliates that were previously included in the Ramoco lease | Tenants	48
Number of leased properties | Property	61
Deferred gain on sale of property		$ 3,868,000
Seller Financing Mortgage [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Total consideration for properties sold including seller financing	$ 13,900,000
Accounts Payable and Accrued Liabilities [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Deferred gain on sale of property			$ 3,900,000

Summary of Significant Accoun35

Summary of Significant Accounting Policies - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Mutual Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	$ 565	$ 888
Deferred Compensation [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of liabilities	565	888
Level 1 [Member] | Mutual Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	565	888
Level 2 [Member] | Deferred Compensation [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of liabilities	$ 565	$ 888

Leases - Additional Information

Leases - Additional Information (Detail)	3 Months Ended								12 Months Ended
	Dec. 31, 2016USD ($)PropertyState	Sep. 30, 2016USD ($)	Jun. 30, 2016USD ($)	Mar. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Sep. 30, 2015USD ($)	Jun. 30, 2015USD ($)	Mar. 31, 2015USD ($)	Dec. 31, 2016USD ($)PropertyState	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Leases [Line Items]
Number of properties in portfolio | Property	829								829
Number of states in which our properties are located | State	23								23
Revenues from rental properties included in continuing operations	$ 25,083,000	$ 24,328,000	$ 24,140,000	$ 24,388,000	$ 25,514,000	$ 24,840,000	$ 22,122,000	$ 20,413,000	$ 97,939,000	$ 92,889,000	$ 82,971,000
Revenues from rental properties									94,522,000	88,358,000	77,720,000
Rental revenue increase due to revenue recognition adjustments included in continuing operations									3,417,000	4,531,000	5,251,000
Deferred rent receivables reserves	0				0				0	0
Real Estate Taxes and other municipal charges paid then reimbursed by tenants included in revenues and expenses from continuing operations									13,784,000	14,146,000	13,777,000
Lease origination costs	148,000				120,000				148,000	120,000	60,000
Net investment in direct financing leases	92,097,000				94,098,000				92,097,000	94,098,000
Net Investments in direct financing lease, minimum lease payments receivable	167,064,000				179,372,000				167,064,000	179,372,000
Net Investment in direct financing lease, unguaranteed estimated residual value	13,979,000				13,979,000				13,979,000	13,979,000
Net Investment in direct financing lease, deferred income	88,946,000				$ 99,253,000				$ 88,946,000	99,253,000
Remaining lease term									11 years
2,017	6,246,000								$ 6,246,000
2,018	5,548,000								5,548,000
2,019	4,620,000								4,620,000
2,020	3,494,000								3,494,000
2,021	2,573,000								2,573,000
Thereafter	$ 3,277,000								3,277,000
Rent expense on operating lease									5,376,000	5,918,000	6,088,000
Rent received under sublease									$ 9,153,000	$ 9,653,000	$ 10,358,000
Third Parties [Member]
Leases [Line Items]
Number of properties leased | Property	89								89
Owned Properties [Member]
Leases [Line Items]
Number of properties | Property	740								740

Leases - Future Contractual Min

Leases - Future Contractual Minimum Annual Rentals Receivable (Detail) $ in Thousands	Dec. 31, 2016USD ($)
Future Minimum Lease Payments For Capital Leases And Operating Leases [Abstract]
2,017	$ 81,784
2,018	81,508
2,019	81,346
2,020	76,936
2,021	71,523
Thereafter	569,111
2,017	12,622
2,018	12,872
2,019	13,079
2,020	13,375
2,021	13,552
Thereafter	101,564
2,017	94,406
2,018	94,380
2,019	94,425
2,020	90,311
2,021	85,075
Thereafter	$ 670,675

Leases - Major Tenants - Additi

Leases - Major Tenants - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2016PropertyLeaseTenants	Dec. 31, 2015
Leases [Line Items]
Number of significant tenants | Tenants	3
Subsidiaries of Global Partners LP (NYSE GLP) [Member]
Leases [Line Items]
Number of leased properties | Property	166
Number of unitary leases	2
Lease revenue percentage	21.00%	21.00%
Number of leased properties guaranteed	3
Subsidiaries of Chestnut Petroleum Dist. Inc.[Member]
Leases [Line Items]
Number of leased properties | Property	79
Number of unitary leases	3
Lease revenue percentage	15.00%	16.00%
Number of leased properties guaranteed	57
Apro, LLC (d/b/a United Oil) [Member]
Leases [Line Items]
Number of leased properties | Property	77
Number of unitary leases	3
Lease revenue percentage	15.00%	9.00%

Leases - Marketing and the Mast

Leases - Marketing and the Master Lease - Additional Information (Detail)	Nov. 03, 2015USD ($)	Apr. 22, 2015USD ($)	Dec. 31, 2016USD ($)PropertyPortfolios	Dec. 31, 2015USD ($)
Leases [Line Items]
Legal settlements received	$ 10,800,000
Number of new triple net leases entered into during the period | Portfolios			15
Number of leased properties with new tenants | Property			350
Number of leased properties as single unit triple net leases | Portfolios			24
Maximum lease commitment for capital expenditure			$ 10,231,000
Asset retirement obligations removed from balance sheet			13,769,000
Deferred rental revenue			2,961,000
USTs [Member]
Leases [Line Items]
Asset retirement obligations removed from balance sheet			13,769,000
Net asset retirement cost related to USTs removed from the balance sheet			10,808,000
Deferred rental revenue			$ 2,961,000
Minimum [Member]
Leases [Line Items]
Unitary triple-net lease agreements initial terms			15 years
Maximum [Member]
Leases [Line Items]
Unitary triple-net lease agreements initial terms			20 years
Unitary triple-net lease agreements successive terms			20 years
Getty Petroleum Marketing Inc [Member]
Leases [Line Items]
Number of properties previously leased | Property			391
Marketing Estate [Member]
Leases [Line Items]
Loan received				$ 18,177,000
Marketing Estate Liquidating Trustee [Member]
Leases [Line Items]
Settlement agreement date				Mar. 3, 2015
Settlement agreement hearing date				Apr. 22, 2015
Interim distribution amount		$ 6,800,000
Marketing Estate Liquidating Trustee [Member] | Settlement Agreement [Member]
Leases [Line Items]
Additional distribution amount		$ 550,000

Leases - NECG Lease Restructuri

Leases - NECG Lease Restructuring - Additional Information (Detail) - NECG Holdings Corp [Member] - Property	Jan. 06, 2017	Dec. 31, 2016	May 01, 2012
Leases [Line Items]
Number of properties formerly leased			84
Number of leased properties remaining in NECG lease		3
Subsequent Event [Member]
Leases [Line Items]
Number of leased properties removed and re-leased	3

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail)	Oct. 05, 2016	Mar. 04, 2016USD ($)	Jul. 07, 2014Defendant	May 31, 2007Defendant	Dec. 31, 2016USD ($)Defendant	Dec. 31, 2015USD ($)	Sep. 30, 2003Parties
Loss Contingencies [Line Items]
Accrued legal matters					$ 11,768,000	$ 11,265,000
Provisions for litigation losses					$ 801,000	374,000
Occidental Chemical Corporation [Member] | EPA [Member]
Loss Contingencies [Line Items]
Remedial design performance period under EPA settlement agreement	4 years
8 Mile Stretch of Lower Passaic River [Member]
Loss Contingencies [Line Items]
Cost estimate for remediating Lower Passaic River		$ 1,380,000,000
Minimum [Member] | 17 Mile Stretch of Lower Passaic River [Member]
Loss Contingencies [Line Items]
Cost estimate for remediating Lower Passaic River						483,000,000
Maximum [Member] | 17 Mile Stretch of Lower Passaic River [Member]
Loss Contingencies [Line Items]
Cost estimate for remediating Lower Passaic River						$ 725,000,000
Lower Passaic River [Member]
Loss Contingencies [Line Items]
Number of potentially responsible parties for Lower Passaic River damages | Parties							66
Lower Passaic River [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Parties to perform a remedial investigation and feasibility study | Defendant				70
NJ | MTBE [Member]
Loss Contingencies [Line Items]
Number of defendants in the MTBE complaint | Defendant					50
PA | MTBE [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Number of defendants in the MTBE complaint | Defendant			50

Credit Agreement and Senior U42

Credit Agreement and Senior Unsecured Notes - Additional Information (Detail) - USD ($)	Jun. 02, 2015	Dec. 31, 2016	Dec. 31, 2015
Credit and Loan Agreement [Line Items]
Credit agreement initiation date		Jun. 2, 2015
Senior unsecured revolving credit agreement	$ 225,000,000
Term loan under credit agreement	50,000,000
Extension of credit agreement		1 year
Borrowings under credit agreement		$ 123,801,000	$ 142,100,000
Debt issuance costs		$ 1,199,000	1,900,000
Amount of rate increase in case of default		2.00%
Restated prudential note purchase agreement		$ 174,743,000	174,689,000
Senior Unsecured Notes [Member]
Credit and Loan Agreement [Line Items]
Debt issuance costs		$ 257,000	311,000
Maximum [Member]
Credit and Loan Agreement [Line Items]
Annual commitment fee on undrawn funds		0.30%
Borrowings under credit agreement		$ 75,000,000	94,000,000
Interest rate		3.10%
Minimum [Member]
Credit and Loan Agreement [Line Items]
Annual commitment fee on undrawn funds		0.25%
Restated Prudential Note Purchase Agreement [Member]
Credit and Loan Agreement [Line Items]
Amount of rate increase in case of default		2.00%
Senior unsecured note, issuance date		Jun. 2, 2015
Restated prudential note purchase agreement		$ 175,000,000	175,000,000
Restated Prudential Note Purchase Agreement [Member] | Series A Note [Member]
Credit and Loan Agreement [Line Items]
Fair value of borrowings outstanding		104,900,000	105,800,000
Restated Prudential Note Purchase Agreement [Member] | Series B Notes [Member]
Credit and Loan Agreement [Line Items]
Fair value of borrowings outstanding		76,100,000	$ 76,400,000
Prudential Loan Agreement [Member] | Series A Note [Member]
Credit and Loan Agreement [Line Items]
Senior unsecured note, aggregate amount issued		$ 100,000,000
Senior unsecured note purchase agreement, maturity date		Feb. 28, 2021
Interest rate on agreement		6.00%
Prudential Loan Agreement [Member] | Series B Notes [Member]
Credit and Loan Agreement [Line Items]
Senior unsecured note, aggregate amount issued		$ 75,000,000
Senior unsecured note purchase agreement, maturity date		Jun. 30, 2023
Interest rate on agreement		5.35%
Revolving Facility [Member]
Credit and Loan Agreement [Line Items]
Revolving facility under credit agreement	175,000,000
Credit facility agreement, maturity date		Jun. 30, 2018
Option to increase credit facility	75,000,000
Credit facility amount	$ 250,000,000
Borrowings under credit agreement		$ 75,000,000
Senior unsecured note purchase agreement, maturity date		Jun. 30, 2018
Revolving Facility [Member] | Maximum [Member]
Credit and Loan Agreement [Line Items]
Credit agreement margin on borrowing base rate		2.25%
Revolving Facility [Member] | Maximum [Member] | LIBOR [Member]
Credit and Loan Agreement [Line Items]
Credit agreement margin on borrowing base rate		3.25%
Revolving Facility [Member] | Minimum [Member]
Credit and Loan Agreement [Line Items]
Credit agreement margin on borrowing base rate		0.95%
Revolving Facility [Member] | Minimum [Member] | LIBOR [Member]
Credit and Loan Agreement [Line Items]
Credit agreement margin on borrowing base rate		1.95%
Borrowing under Credit Lines - Term Loan [Member]
Credit and Loan Agreement [Line Items]
Term loan under credit agreement		$ 50,000,000
Credit facility agreement, maturity date		Jun. 30, 2020
Borrowings under credit agreement		$ 50,000,000
Senior unsecured note purchase agreement, maturity date		Jun. 30, 2020
Borrowing under Credit Lines - Term Loan [Member] | Maximum [Member]
Credit and Loan Agreement [Line Items]
Credit agreement margin on borrowing base rate		2.20%
Borrowing under Credit Lines - Term Loan [Member] | Maximum [Member] | LIBOR [Member]
Credit and Loan Agreement [Line Items]
Credit agreement margin on borrowing base rate		3.20%
Borrowing under Credit Lines - Term Loan [Member] | Minimum [Member]
Credit and Loan Agreement [Line Items]
Credit agreement margin on borrowing base rate		0.90%
Borrowing under Credit Lines - Term Loan [Member] | Minimum [Member] | LIBOR [Member]
Credit and Loan Agreement [Line Items]
Credit agreement margin on borrowing base rate		1.90%

Credit Agreement and Senior U43

Credit Agreement and Senior Unsecured Notes - Schedule of Maturity Dates and Amounts Outstanding Under Credit Agreement and Restated Prudential Note Purchase Agreement (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Line of Credit Facility [Line Items]
Borrowings under credit agreement, outstanding amount	$ 123,801	$ 142,100
Borrowings under purchase agreement, outstanding amount	$ 174,743	174,689
Revolving Facility [Member]
Line of Credit Facility [Line Items]
Borrowings under credit agreement, maturity date	Jun. 30, 2018
Borrowings under credit agreement, outstanding amount	$ 75,000
Borrowing under Credit Lines - Term Loan [Member]
Line of Credit Facility [Line Items]
Borrowings under credit agreement, maturity date	Jun. 30, 2020
Borrowings under credit agreement, outstanding amount	$ 50,000
Restated Prudential Note Purchase Agreement [Member]
Line of Credit Facility [Line Items]
Borrowings under purchase agreement, outstanding amount	$ 175,000	$ 175,000
Restated Prudential Note Purchase Agreement [Member] | Series A Notes Maturing on February 2021 [Member]
Line of Credit Facility [Line Items]
Borrowings under credit agreement, maturity date	Feb. 28, 2021
Borrowings under purchase agreement, outstanding amount	$ 100,000
Restated Prudential Note Purchase Agreement [Member] | Series B Notes Maturing on June 2023 [Member]
Line of Credit Facility [Line Items]
Borrowings under credit agreement, maturity date	Jun. 30, 2023
Borrowings under purchase agreement, outstanding amount	$ 75,000

Environmental Obligations - Add

Environmental Obligations - Additional Information (Detail) - USD ($)	1 Months Ended	12 Months Ended
	Jul. 31, 2012	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other Commitments [Line Items]
Pollution legal liability insurance policy duration	10 years
Pollution legal liability insurance policy aggregate limit	$ 50,000,000
Remediation agreement of lease		We have agreed to be responsible for environmental contamination at the premises that was known at the time the lease commenced, and which existed prior to commencement of the lease and is discovered (other than as a result of a voluntary site investigation) during the first ten years of the lease term (or a shorter period for a minority of such leases).
Environmental remediation liability		$ 74,516,000	$ 84,345,000
Accretion expense		4,107,000	4,829,000	$ 3,046,000
Amounts of credits to environmental expenses included in continuing and discontinued operations		7,007,000	4,639,000	2,756,000
Increase in carrying value of property		11,346,000	12,285,000
Non-cash impairment charges		$ 11,658,000	12,548,000
Estimated remaining useful life of underground storage tank for capitalized asset retirement costs		10 years
Depreciation and amortization expense for capitalized asset retirement costs		$ 5,126,000	5,997,000	$ 1,560,000
Capitalized asset retirement costs		49,125,000	51,393,000
Asset retirement obligations removed from balance sheet		13,769,000
Deferred rental revenue		$ 2,961,000
Minimum [Member]
Other Commitments [Line Items]
Environmental remediation liability discount range		4.00%
Environmental remediation liability fair value, expected future net cash flows		2.00%
Maximum [Member]
Other Commitments [Line Items]
Environmental remediation liability discount range		7.00%
Environmental remediation liability fair value, expected future net cash flows		2.75%
USTs [Member]
Other Commitments [Line Items]
Asset retirement obligations removed from balance sheet		$ 13,769,000
Net asset cost related to USTs removed from the balance sheet		10,808,000
Deferred rental revenue		2,961,000
Future Environmental Liabilities for Preexisting Unknown Contamination [Member]
Other Commitments [Line Items]
Environmental remediation liability		45,009,000	45,443,000
Non-cash impairment charges		191,000	2,150,000
Capitalized asset retirement costs		28,489,000	30,454,000
Reasonably Estimable Environmental Remediation Obligation [Member]
Other Commitments [Line Items]
Environmental remediation liability		29,507,000	38,902,000
Known Environmental Liabilities [Member]
Other Commitments [Line Items]
Non-cash impairment charges		11,467,000	10,398,000
Capitalized asset retirement costs		$ 20,636,000	$ 20,939,000

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	Nov. 25, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax [Line Items]
Net cash paid for income taxes		$ 368,000	$ 341,000	$ 316,000
Percentage of ordinary income		61.60%	83.80%	43.90%
Capital gain distributions percentage		34.40%	16.20%	56.10%
Non-taxable distributions percentage		4.00%	0.00%	0.00%
Percentage of taxable income distributed among stockholders		90.00%
Percentage of common stock to total required distribution		80.00%
Dividend declared date	Nov. 25, 2015
Special dividend declared	$ 0.22	$ 1.03	$ 1.15	$ 0.960
Common Stock issued	255,747
Cash payments to shareholders	$ 2,941,000	$ 36,231,000	$ 35,150,000	$ 28,675,000
Marketing Estate [Member]
Income Tax [Line Items]
Distributions received from settlement of claims			$ 18,177,000
Minimum [Member]
Income Tax [Line Items]
Percentage of dividend to be distributed as cash	20.00%
Maximum [Member]
Income Tax [Line Items]
Percentage of dividend to be distributed as cash	40.00%

Shareholders' Equity - Summary

Shareholders' Equity - Summary of Changes in Shareholders' Equity (Detail) - USD ($)	Nov. 25, 2015	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Shareholders Equity [Line Items]
Beginning balance, value					$ 406,561,000				$ 407,024,000	$ 406,561,000	$ 407,024,000	$ 415,091,000
Net earnings		$ 8,328,000	$ 8,804,000	$ 13,576,000	7,703,000	$ 19,893,000	$ 7,035,000	$ 11,619,000	(1,137,000)	38,411,000	37,410,000	23,418,000
Dividends										(35,385,000)	(38,897,000)	(32,402,000)
Shares issued pursuant to ATM Program, net, value										14,886,000
Shares issued pursuant to stock dividends, value										4,412,000
Shares issued pursuant to stock dividends, shares	255,747
Shares issued pursuant to dividend reinvestment, value										$ 897,000
Shares issued pursuant to dividend reinvestment, shares										42,681
Stock-based compensation, Value										$ 1,136,000	1,024,000	917,000
Ending balance, value		430,918,000				406,561,000				430,918,000	406,561,000	407,024,000
Common Stock [Member]
Shareholders Equity [Line Items]
Beginning balance, value					$ 334,000				$ 334,000	$ 334,000	$ 334,000	$ 334,000
Beginning balance, shares					33,422				33,417	33,422	33,417	33,397
Shares issued pursuant to ATM Program, net, value										$ 7,000
Shares issued pursuant to ATM Program, net, shares										653,000
Shares issued pursuant to stock dividends, value										$ 3,000
Shares issued pursuant to stock dividends, shares										256,000
Shares issued pursuant to dividend reinvestment, shares										43,000
Stock-based compensation, Shares										19,000	5,000	20,000
Ending balance, value		$ 344,000				$ 334,000				$ 344,000	$ 334,000	$ 334,000
Ending balance, shares		34,393				33,422				34,393	33,422	33,417
Additional Paid-in-Capital [Member]
Shareholders Equity [Line Items]
Beginning balance, value					$ 464,338,000				$ 463,314,000	$ 464,338,000	$ 463,314,000	$ 462,397,000
Shares issued pursuant to ATM Program, net, value										14,879,000
Shares issued pursuant to stock dividends, value										4,409,000
Shares issued pursuant to dividend reinvestment, value										897,000
Stock-based compensation, Value										1,136,000	1,024,000	917,000
Ending balance, value		$ 485,659,000				$ 464,338,000				485,659,000	464,338,000	463,314,000
Dividends Paid in Excess of Earnings [Member]
Shareholders Equity [Line Items]
Beginning balance, value					$ (58,111,000)				$ (56,624,000)	(58,111,000)	(56,624,000)	(47,640,000)
Net earnings										38,411,000	37,410,000	23,418,000
Dividends										(35,385,000)	(38,897,000)	(32,402,000)
Ending balance, value		$ (55,085,000)				$ (58,111,000)				$ (55,085,000)	$ (58,111,000)	$ (56,624,000)

Shareholders' Equity - Summar47

Shareholders' Equity - Summary of Changes in Shareholders' Equity (Parenthetical) (Detail) - $ / shares	Nov. 25, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Equity [Abstract]
Dividends per share	$ 0.22	$ 1.03	$ 1.15	$ 0.960

Shareholders' Equity - Addition

Shareholders' Equity - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Shareholders Equity [Line Items]
Preferred stock, shares authorized	20,000,000	20,000,000
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares issued	0	0
Proceeds from issuance of shares	$ 14,886,000
Payments of regular and special dividends	$ 40,643,000	$ 35,150,000
Dividends paid per share	$ 1.22	$ 1.04
Payment of regular quarterly dividend	$ 33,202,000	$ 30,425,000
Payment of special dividend	$ 7,441,000	$ 4,725,000
Regular quarterly dividends paid per share	$ 1	$ 0.90
Special dividends paid per share	$ 0.22	$ 0.14
Shares issued under dividend reinvestment plan	42,681
Value of shares issued under Shares issued under Dividend Reinvestment Plan	$ 897,000
Stock based compensation expenses	$ 1,426,000	$ 1,090,000	$ 917,000
ATM Program [Member]
Shareholders Equity [Line Items]
Shares issued	653,000
Proceeds from issuance of shares	$ 14,886,000
Stock issuance costs	360,000
ATM Program [Member] | Maximum [Member]
Shareholders Equity [Line Items]
Aggregate sales price	$ 125,000,000

Employee Benefit Plans - Additi

Employee Benefit Plans - Additional Information (Detail) - USD ($)	1 Months Ended	12 Months Ended
	Feb. 28, 2013	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule Of Share Based Compensation Arrangements By Share Based Payment Award Options [Line Items]
Grant awards		1,000,000
Maximum number of shares of common stock		100,000
Incentive compensation program vesting percentage		20.00%
Vested of common stock		1
Issuance of common stock		1
Common stock dividends declared		$ 445,000	$ 464,000	$ 333,000
Compensation expense		$ 1,426,000	1,090,000	917,000
Employer matching contribution percent		50.00%
Employee compensation		3.00%
Contributions, net of forfeitures		$ 268,000	$ 284,000	$ 261,000
Number of stock option outstanding		5,000	5,000
Stock option exercise price		$ 27.68	$ 27.68
Intrinsic value of stock option outstanding		$ 0	$ 0
Expiration date of stock options		May 15, 2017	May 15, 2017
Restricted Stock Units [Member]
Schedule Of Share Based Compensation Arrangements By Share Based Payment Award Options [Line Items]
Restricted stock awarded		86,600	79,250
RSUs vest starting period from date of grant		1 year
Annual rate of vest of total number of RSUs		20.00%
Compensation expense			$ 1,083,000
Number of outstanding RSUs		429,775	400,375	332,525	295,850
Restricted Stock Units [Member] | Employees And Directors [Member]
Schedule Of Share Based Compensation Arrangements By Share Based Payment Award Options [Line Items]
Restricted stock awarded		86,600	79,250	72,125
Termination of grant		10 years
Restricted Stock Units [Member] | 2012 Incentive Program [Member]
Schedule Of Share Based Compensation Arrangements By Share Based Payment Award Options [Line Items]
Restricted stock awarded				72,125
Unrecognized compensation cost		$ 2,660,000
Restricted Stock Units [Member] | 2012 Incentive Program [Member] | Employees And Directors [Member]
Schedule Of Share Based Compensation Arrangements By Share Based Payment Award Options [Line Items]
Restricted stock awarded	35,000
Restricted Stock Units [Member] | 2004 Omnibus Incentive Compensation Plan [Member]
Schedule Of Share Based Compensation Arrangements By Share Based Payment Award Options [Line Items]
Fair value of grants recognition period		5 years
Compensation expense		$ 1,418,000		$ 910,000
Weighted average period		3 years
Number of outstanding RSUs		429,775
Number of vested RSUs		221,819
Intrinsic value of outstanding RSUs		$ 10,955,000
Intrinsic value of vested RSUs		5,654,000
Restricted Stock Units [Member] | 2004 Incentive Plan [Member]
Schedule Of Share Based Compensation Arrangements By Share Based Payment Award Options [Line Items]
Unrecognized compensation cost		$ 2,660,000
Supplemental Employee Retirement Plan [Member]
Schedule Of Share Based Compensation Arrangements By Share Based Payment Award Options [Line Items]
Executive compensation		10.00%
Distribution from supplemental plan			$ 0
Supplemental Employee Retirement Plan [Member] | Two Former Officers [Member]
Schedule Of Share Based Compensation Arrangements By Share Based Payment Award Options [Line Items]
Distribution from supplemental plan				$ 2,690,000
Supplemental Employee Retirement Plan [Member] | One Former Officer [Member]
Schedule Of Share Based Compensation Arrangements By Share Based Payment Award Options [Line Items]
Distribution from supplemental plan		$ 469,000

Employee Benefit Plans - Schedu

Employee Benefit Plans - Schedule of Activity Relating to Restricted Stock Units Outstanding (Detail) - Restricted Stock Units [Member] - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance, RSUs Outstanding	400,375	332,525	295,850
Granted, Number of RSUs Outstanding	86,600	79,250
Settled, Number of RSUs Outstanding	(34,650)	(8,160)	(19,550)
Cancelled, Number of RSUs Outstanding	(22,550)	(3,240)	(15,900)
Balance, RSUs Outstanding	429,775	400,375	332,525
Granted, Fair Value Amount	$ 1,593,400	$ 1,429,700
Settled, Fair Value Amount	635,800	144,300	$ 360,000
Cancelled, Fair Value Amount	$ 415,400	$ 55,600	$ 293,000
Granted, Fair Value Average Per RSU	$ 18.40	$ 18.04
Settled, Fair Value Average Per RSU	18.35	17.68	$ 18.43
Cancelled, Fair Value Average Per RSU	$ 18.42	$ 17.16	$ 18.44
2012 Incentive Program [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Number of RSUs Outstanding			72,125
Granted, Fair Value Amount			$ 1,386,000
Granted, Fair Value Average Per RSU			$ 19.21

Employee Benefit Plans - Sche51

Employee Benefit Plans - Schedule of Vesting Activity Relating to Restricted Stock Units Outstanding (Detail) - Restricted Stock Units [Member] - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance, RSUs Vested	202,344	154,855	136,135
Vested, Number of RSUs Vested	54,125	55,649	38,270
Settled, Number of RSUs Vested	(34,650)	(8,160)	(19,550)
Balance, RSUs Vested	221,819	202,344	154,855
Vested, Fair Value	$ 1,379,600	$ 954,400	$ 697,000
Settled, Fair Value	$ 635,800	$ 144,300	$ 360,000

Earnings Per Common Share - Add

Earnings Per Common Share - Additional Information (Detail) - shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Stock Options [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Anti-dilutive securities Excluded from calculation of EPS	5,000	5,000	5,000

Earnings Per Common Share - Sch

Earnings Per Common Share - Schedule of Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Earnings Per Share [Abstract]
Earnings from continuing operations	$ 11,420	$ 9,236	$ 13,583	$ 7,842	$ 20,384	$ 8,564	$ 11,503	$ (81)	$ 42,081	$ 40,370	$ 20,405
Less dividend equivalents attributable to RSUs outstanding									(482)	(460)	(341)
Earnings from continuing operations attributable to common shareholders									41,599	39,910	20,064
(Loss) earnings from discontinued operations									(3,670)	(2,960)	3,013
Less dividend equivalents attributable to RSUs outstanding											(50)
(Loss) earnings from discontinued operations attributable to common shareholders									(3,670)	(2,960)	2,963
Net earnings attributable to common shareholders used for basic and diluted earnings per share calculation									$ 37,929	$ 36,950	$ 23,027
Basic and diluted									33,806	33,420	33,409
RSUs outstanding at the end of the period	430				400				430	400	333
Basic and diluted earnings per common share									$ 1.12	$ 1.11	$ 0.69

Discontinued Operations and A54

Discontinued Operations and Assets Held For Sale - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2016USD ($)Property	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of real estate properties held for sale | Property	2
Number of properties sold previously held for sale | Property	2
(Loss) gains from dispositions of real estate	$ (205,000)	$ 339,000	$ 8,995,000
Gain from sale of properties	$ 2,373,000
Number of properties sold | Property	12
Number of properties for which gains on dispositions are included in earnings | Property	12
Ramoco Affiliates [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on property condemnations	$ 177,000
Deferred gain on sale of property	3,868,000
Properties Previously Classified Held for Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
(Loss) gains from dispositions of real estate	$ (205,000)

Discontinued Operations and A55

Discontinued Operations and Assets Held For Sale - Schedule of Real Estate Held for Sale (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Real Estate Held For Sale [Line Items]
Accumulated depreciation and amortization	$ (120,576)	$ (107,109)
Real estate, net	661,590	675,863
Real Estate Held for Sale [Member]
Real Estate Held For Sale [Line Items]
Land	117	603
Buildings and improvements	528	997
Real estate held for sale, gross	645	1,600
Accumulated depreciation and amortization		(261)
Real estate, net	$ 645	$ 1,339

Discontinued Operations and A56

Discontinued Operations and Assets Held For Sale - Schedule of Earnings (Loss) from Discontinued Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Discontinued Operations and Disposal Groups [Abstract]
Revenues from rental properties	$ 5	$ 164	$ 2,372
Impairments	(5,926)	(5,746)	(8,596)
Other operating income	2,456	2,283	242
(Loss) from operating activities	(3,465)	(3,299)	(5,982)
(Loss) gains from dispositions of real estate	(205)	339	8,995
(Loss) earnings from discontinued operations	$ (3,670)	$ (2,960)	$ 3,013

Quarterly Financial Data - Summ

Quarterly Financial Data - Summary of Quarterly Results of Operations (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Revenues from rental properties	$ 25,083	$ 24,328	$ 24,140	$ 24,388	$ 25,514	$ 24,840	$ 22,122	$ 20,413	$ 97,939	$ 92,889	$ 82,971
(Loss) earnings from continuing operations	11,420	9,236	13,583	7,842	20,384	8,564	11,503	(81)	42,081	40,370	20,405
Net (loss) earnings	$ 8,328	$ 8,804	$ 13,576	$ 7,703	$ 19,893	$ 7,035	$ 11,619	$ (1,137)	$ 38,411	$ 37,410	$ 23,418
Diluted (loss) earnings per common share:
(Loss) earnings from continuing operations	$ 0.33	$ 0.27	$ 0.40	$ 0.23	$ 0.60	$ 0.25	$ 0.34	$ (0.01)
Net (loss) earnings	$ 0.24	$ 0.26	$ 0.40	$ 0.23	$ 0.59	$ 0.21	$ 0.34	$ (0.04)

Property Acquisitions - Additio

Property Acquisitions - Additional Information (Detail)	Jun. 03, 2015USD ($)LeaseSimpleInterests	Dec. 31, 2016USD ($)Property	Dec. 31, 2015USD ($)Property	Dec. 31, 2014USD ($)
Business Acquisition [Line Items]
Number of convenience stores and gasoline stations acquired during the period | Property		3	80
Aggregate purchase price of the convenience stores and gasoline stations acquired during the period		$ 7,688,000	$ 219,192,000	$ 17,098,000
Maximum [Member]
Business Acquisition [Line Items]
Unitary triple-net lease agreements initial terms		20 years
Unitary triple-net lease agreements successive terms		20 years
Apro, LLC (d/b/a United Oil) [Member]
Business Acquisition [Line Items]
Number of Triple-Net Unitary Leases | Lease	3
Lease agreements description		Initial terms of 20 years and options for up to three successive five year renewal options
Unitary triple-net lease agreements initial terms	20 years
Unitary triple-net lease agreements successive terms	5 years
Apro, LLC (d/b/a United Oil) [Member] | Maximum [Member]
Business Acquisition [Line Items]
Number of lease renewal options | Lease	3
Pacific Convenience and Fuels LLC [Member]
Business Acquisition [Line Items]
Aggregate purchase price of the convenience stores and gasoline stations acquired during the period		$ 7,688,000	219,200,000
Pacific Convenience and Fuels LLC [Member] | Apro, LLC (d/b/a United Oil) [Member]
Business Acquisition [Line Items]
Aggregate purchase price of the convenience stores and gasoline stations acquired during the period	$ 214,500,000
Number of fee simple interests acquired in convenience store and retail motor fuel stations from affiliates | SimpleInterests	77
United Oil Transaction [Member]
Business Acquisition [Line Items]
Total revenues from continuing operations		17,631,000	10,177,000
Net earnings from continuing operations		11,762,000	$ 6,952,000
Land [Member] | Gasoline Stations and Convenience Store Properties [Member]
Business Acquisition [Line Items]
Purchase price allocation, assets acquired	$ 140,966,000	1,041,000
Land Building and Equipment [Member] | Gasoline Stations and Convenience Store Properties [Member]
Business Acquisition [Line Items]
Purchase price allocated to in-place leases		374,000
Transaction cost related to acquisition	413,000	86,000
Purchase price allocated to above market leases	216,000
Purchase price allocated to below market leases	19,210,000
Purchase price allocated to in-place lease and other intangible assets	17,402,000
Buildings and Improvements [Member] | Gasoline Stations and Convenience Store Properties [Member]
Business Acquisition [Line Items]
Purchase price allocation, assets acquired		6,111,000
Leasehold [Member]
Business Acquisition [Line Items]
Number of convenience stores and gasoline stations acquired during the period | Property			3
Leasehold [Member] | Pacific Convenience and Fuels LLC [Member]
Business Acquisition [Line Items]
Aggregate purchase price of the convenience stores and gasoline stations acquired during the period			$ 4,700,000
Buildings and Equipment [Member] | Gasoline Stations and Convenience Store Properties [Member]
Business Acquisition [Line Items]
Purchase price allocation, assets acquired	$ 75,119,000
Parcel of Land [Member] | Gasoline Stations and Convenience Store Properties [Member]
Business Acquisition [Line Items]
Purchase price allocation, assets acquired		$ 162,000

Property Acquisitions - Pro For

Property Acquisitions - Pro Forma Condensed Financial Information (Detail) - Proforma Financial Information for Acquisition Properties [Member] - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition Pro Forma Information [Line Items]
Revenues from continuing operations	$ 118,003	$ 117,340
Earnings from continuing operations	$ 41,763	$ 22,399
Basic and diluted earnings from continuing operations per common share	$ 1.24	$ 0.66

Acquired Intangible Assets - Ad

Acquired Intangible Assets - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Above- Market and Below- Market Leases [Member] | Operating Income [Member]
Business Acquisition [Line Items]
Amortization from acquired leases	$ 1,833,000	$ 1,426,000	$ 1,239,000
Above- Market and Below- Market Leases [Member] | Operating Expense [Member]
Business Acquisition [Line Items]
Amortization from acquired leases	333,000	333,000	333,000
Above- Market and Below- Market Leases [Member] | Prepaid Expenses And Other Assets [Member]
Business Acquisition [Line Items]
Finite lived intangible asset	2,527,000	3,021,000
Accumulated amortization	4,210,000	3,715,000
Above- Market and Below- Market Leases [Member] | Accounts Payable and Accrued Liabilities [Member]
Business Acquisition [Line Items]
Accumulated amortization	13,619,000	11,624,000
Finite lived intangible liabilities	22,539,000	24,534,000
In-Place Leases [Member]
Business Acquisition [Line Items]
Finite lived intangible asset	20,984,000	22,004,000
Accumulated amortization	5,187,000	3,793,000
Depreciation and amortization expense	$ 1,395,000	$ 1,019,000	$ 518,000

Acquired Intangible Assets - Sc

Acquired Intangible Assets - Schedule of Amortization for Acquired Intangible Assets (Detail)	Dec. 31, 2016USD ($)
Above Market Leases [Member] | Lessor [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
2,017	$ 148,000
2,018	47,000
2,019	30,000
2,020	24,000
2,021	16,000
Thereafter	179,000
Total	444,000
Below Market Leases [Member] | Lessor [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
2,017	1,833,000
2,018	1,781,000
2,019	1,701,000
2,020	1,463,000
2,021	1,322,000
Thereafter	14,439,000
Total	22,539,000
Below Market Leases [Member] | Lessee [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
2,017	320,000
2,018	317,000
2,019	312,000
2,020	222,000
2,021	157,000
Thereafter	755,000
Total	2,083,000
In-Place Leases [Member] | Lessor [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
2,017	1,389,000
2,018	1,363,000
2,019	1,342,000
2,020	1,322,000
2,021	1,301,000
Thereafter	14,267,000
Total	$ 20,984,000

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) - Series C Notes [Member] - Prudential Loan Agreement [Member] - Subsequent Event [Member]	Feb. 21, 2017USD ($)
Subsequent Event [Line Items]
Senior unsecured note, aggregate amount issued	$ 50,000,000
Interest rate on agreement	4.75%
Senior unsecured note purchase agreement, maturity date	Feb. 28, 2025

Schedule II - Valuation and Q63

Schedule II - Valuation and Qualifying Accounts and Reserves (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Allowance For Deferred Rent Receivable [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of year		$ 7,009	$ 4,775
Additions			2,234
Deductions		7,009
Balance at end of year			7,009
Allowance For Accounts Receivables [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of year	$ 2,634	4,160	3,248
Additions	855	1,778	1,182
Deductions	1,483	3,304	270
Balance at end of year	$ 2,006	$ 2,634	$ 4,160

Schedule III - Real Estate an64

Schedule III - Real Estate and Accumulated Depreciation and Amortization - Schedule of Changes in Real Estate Assets and Accumulated Depreciation (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Investment in real estate:
Balance at beginning of year	$ 783,233	$ 595,959	$ 570,275
Acquisitions and capital expenditures	19,097	233,785	79,259
Impairments	(13,590)	(20,606)	(24,620)
Sales and condemnations	(6,379)	(25,019)	(25,786)
Lease expirations/settlements	(195)	(886)	(3,169)
Balance at end of year	782,166	783,233	595,959
Accumulated depreciation and amortization:
Balance at beginning of year	107,370	100,690	103,452
Depreciation and amortization	16,629	15,663	9,777
Impairments	(776)	(3,246)	(3,086)
Sales and condemnations	(2,559)	(5,313)	(6,544)
Lease expirations/settlements	(88)	(424)	(2,909)
Balance at end of year	$ 120,576	$ 107,370	$ 100,690

Schedule III - Real Estate an65

Schedule III - Real Estate and Accumulated Depreciation and Amortization Part 1 (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule Of Investments In Real Estate [Line Items]
Total Investment in Real Estate	$ 782,166	$ 783,233	$ 595,959	$ 570,275
Accumulated Depreciation And Amortization Description [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	720,099
Cost Capitalized Subsequent to Initial Investment	62,067
Land	474,232
Building and Improvements	307,934
Total Investment in Real Estate	782,166
Accumulated Depreciation and Amortization	120,576
Accumulated Depreciation And Amortization Description [Member] | ARKANSAS | Brookland One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	1,468
Cost Capitalized Subsequent to Initial Investment	0
Land	149
Building and Improvements	1,319
Total Investment in Real Estate	1,468
Accumulated Depreciation and Amortization	$ 508
Date of Initial Leasehold or Acquisition Investment	2,007
Accumulated Depreciation And Amortization Description [Member] | ARKANSAS | Jonesboro One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 868
Cost Capitalized Subsequent to Initial Investment	0
Land	173
Building and Improvements	695
Total Investment in Real Estate	868
Accumulated Depreciation and Amortization	$ 282
Date of Initial Leasehold or Acquisition Investment	2,007
Accumulated Depreciation And Amortization Description [Member] | ARKANSAS | Jonesboro Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,985
Cost Capitalized Subsequent to Initial Investment	0
Land	330
Building and Improvements	2,655
Total Investment in Real Estate	2,985
Accumulated Depreciation and Amortization	$ 1,076
Date of Initial Leasehold or Acquisition Investment	2,007
Accumulated Depreciation And Amortization Description [Member] | CALIFORNIA | Bellflower One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,369
Cost Capitalized Subsequent to Initial Investment	0
Land	910
Building and Improvements	459
Total Investment in Real Estate	1,369
Accumulated Depreciation and Amortization	$ 241
Date of Initial Leasehold or Acquisition Investment	2,007
Accumulated Depreciation And Amortization Description [Member] | CALIFORNIA | Benicia One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,224
Cost Capitalized Subsequent to Initial Investment	0
Land	1,058
Building and Improvements	1,166
Total Investment in Real Estate	2,224
Accumulated Depreciation and Amortization	$ 639
Date of Initial Leasehold or Acquisition Investment	2,007
Accumulated Depreciation And Amortization Description [Member] | CALIFORNIA | Chula Vista One[Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,385
Cost Capitalized Subsequent to Initial Investment	0
Land	889
Building and Improvements	1,496
Total Investment in Real Estate	2,385
Accumulated Depreciation and Amortization	$ 152
Date of Initial Leasehold or Acquisition Investment	2,014
Accumulated Depreciation And Amortization Description [Member] | CALIFORNIA | Coachella One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,235
Cost Capitalized Subsequent to Initial Investment	0
Land	1,217
Building and Improvements	1,018
Total Investment in Real Estate	2,235
Accumulated Depreciation and Amortization	$ 521
Date of Initial Leasehold or Acquisition Investment	2,007
Accumulated Depreciation And Amortization Description [Member] | CALIFORNIA | Cotati One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 6,072
Cost Capitalized Subsequent to Initial Investment	0
Land	4,008
Building and Improvements	2,064
Total Investment in Real Estate	6,072
Accumulated Depreciation and Amortization	$ 180
Date of Initial Leasehold or Acquisition Investment	2,015
Accumulated Depreciation And Amortization Description [Member] | CALIFORNIA | Fillmore One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,354
Cost Capitalized Subsequent to Initial Investment	0
Land	950
Building and Improvements	404
Total Investment in Real Estate	1,354
Accumulated Depreciation and Amortization	$ 211
Date of Initial Leasehold or Acquisition Investment	2,007
Accumulated Depreciation And Amortization Description [Member] | CALIFORNIA | Grass Valley One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,485
Cost Capitalized Subsequent to Initial Investment	0
Land	853
Building and Improvements	632
Total Investment in Real Estate	1,485
Accumulated Depreciation and Amortization	$ 57
Date of Initial Leasehold or Acquisition Investment	2,015
Accumulated Depreciation And Amortization Description [Member] | CALIFORNIA | Hesperia One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,643
Cost Capitalized Subsequent to Initial Investment	0
Land	849
Building and Improvements	794
Total Investment in Real Estate	1,643
Accumulated Depreciation and Amortization	$ 384
Date of Initial Leasehold or Acquisition Investment	2,007
Accumulated Depreciation And Amortization Description [Member] | CALIFORNIA | Hesperia Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,055
Cost Capitalized Subsequent to Initial Investment	0
Land	492
Building and Improvements	1,563
Total Investment in Real Estate	2,055
Accumulated Depreciation and Amortization	$ 166
Date of Initial Leasehold or Acquisition Investment	2,015
Accumulated Depreciation And Amortization Description [Member] | CALIFORNIA | Indio One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,250
Cost Capitalized Subsequent to Initial Investment	0
Land	302
Building and Improvements	948
Total Investment in Real Estate	1,250
Accumulated Depreciation and Amortization	$ 89
Date of Initial Leasehold or Acquisition Investment	2,015
Accumulated Depreciation And Amortization Description [Member] | CALIFORNIA | Indio Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,727
Cost Capitalized Subsequent to Initial Investment	0
Land	1,486
Building and Improvements	1,241
Total Investment in Real Estate	2,727
Accumulated Depreciation and Amortization	$ 122
Date of Initial Leasehold or Acquisition Investment	2,015
Accumulated Depreciation And Amortization Description [Member] | CALIFORNIA | La Palma One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,971
Cost Capitalized Subsequent to Initial Investment	0
Land	1,389
Building and Improvements	582
Total Investment in Real Estate	1,971
Accumulated Depreciation and Amortization	$ 300
Date of Initial Leasehold or Acquisition Investment	2,007
Accumulated Depreciation And Amortization Description [Member] | CALIFORNIA | La Puente One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 7,615
Cost Capitalized Subsequent to Initial Investment	0
Land	6,405
Building and Improvements	1,210
Total Investment in Real Estate	7,615
Accumulated Depreciation and Amortization	$ 125
Date of Initial Leasehold or Acquisition Investment	2,015
Accumulated Depreciation And Amortization Description [Member] | CALIFORNIA | Lakeside One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,715
Cost Capitalized Subsequent to Initial Investment	0
Land	2,695
Building and Improvements	1,020
Total Investment in Real Estate	3,715
Accumulated Depreciation and Amortization	$ 100
Date of Initial Leasehold or Acquisition Investment	2,015
Accumulated Depreciation And Amortization Description [Member] | CALIFORNIA | Los Angeles One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 6,612
Cost Capitalized Subsequent to Initial Investment	0
Land	5,006
Building and Improvements	1,606
Total Investment in Real Estate	6,612
Accumulated Depreciation and Amortization	$ 164
Date of Initial Leasehold or Acquisition Investment	2,015
Accumulated Depreciation And Amortization Description [Member] | CALIFORNIA | Oakland One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 5,434
Cost Capitalized Subsequent to Initial Investment	0
Land	4,123
Building and Improvements	1,311
Total Investment in Real Estate	5,434
Accumulated Depreciation and Amortization	$ 132
Date of Initial Leasehold or Acquisition Investment	2,015
Accumulated Depreciation And Amortization Description [Member] | CALIFORNIA | Ontario One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 6,613
Cost Capitalized Subsequent to Initial Investment	0
Land	4,523
Building and Improvements	2,090
Total Investment in Real Estate	6,613
Accumulated Depreciation and Amortization	$ 213
Date of Initial Leasehold or Acquisition Investment	2,015

Schedule III - Real Estate an66

Schedule III - Real Estate and Accumulated Depreciation and Amortization Part 2 (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule Of Investments In Real Estate [Line Items]
Total Investment in Real Estate	$ 782,166	$ 783,233	$ 595,959	$ 570,275
Accumulated Depreciation And Amortization Description [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	720,099
Cost Capitalized Subsequent to Initial Investment	62,067
Land	474,232
Building and Improvements	307,934
Total Investment in Real Estate	782,166
Accumulated Depreciation and Amortization	120,576
CALIFORNIA | Accumulated Depreciation And Amortization Description [Member] | Phelan One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	4,611
Cost Capitalized Subsequent to Initial Investment	0
Land	3,276
Building and Improvements	1,335
Total Investment in Real Estate	4,611
Accumulated Depreciation and Amortization	$ 139
Date of Initial Leasehold or Acquisition Investment	2,015
CALIFORNIA | Accumulated Depreciation And Amortization Description [Member] | Riverside One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,130
Cost Capitalized Subsequent to Initial Investment	0
Land	1,619
Building and Improvements	511
Total Investment in Real Estate	2,130
Accumulated Depreciation and Amortization	$ 67
Date of Initial Leasehold or Acquisition Investment	2,015
CALIFORNIA | Accumulated Depreciation And Amortization Description [Member] | Riverside Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,737
Cost Capitalized Subsequent to Initial Investment	0
Land	1,216
Building and Improvements	1,521
Total Investment in Real Estate	2,737
Accumulated Depreciation and Amortization	$ 179
Date of Initial Leasehold or Acquisition Investment	2,014
CALIFORNIA | Accumulated Depreciation And Amortization Description [Member] | Sacramento One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,193
Cost Capitalized Subsequent to Initial Investment	0
Land	2,207
Building and Improvements	986
Total Investment in Real Estate	3,193
Accumulated Depreciation and Amortization	$ 103
Date of Initial Leasehold or Acquisition Investment	2,015
CALIFORNIA | Accumulated Depreciation And Amortization Description [Member] | Sacramento Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 4,247
Cost Capitalized Subsequent to Initial Investment	0
Land	2,604
Building and Improvements	1,643
Total Investment in Real Estate	4,247
Accumulated Depreciation and Amortization	$ 151
Date of Initial Leasehold or Acquisition Investment	2,015
CALIFORNIA | Accumulated Depreciation And Amortization Description [Member] | Sacramento Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 5,942
Cost Capitalized Subsequent to Initial Investment	0
Land	4,233
Building and Improvements	1,709
Total Investment in Real Estate	5,942
Accumulated Depreciation and Amortization	$ 168
Date of Initial Leasehold or Acquisition Investment	2,015
CALIFORNIA | Accumulated Depreciation And Amortization Description [Member] | San Dimas One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,941
Cost Capitalized Subsequent to Initial Investment	0
Land	749
Building and Improvements	1,192
Total Investment in Real Estate	1,941
Accumulated Depreciation and Amortization	$ 528
Date of Initial Leasehold or Acquisition Investment	2,007
CALIFORNIA | Accumulated Depreciation And Amortization Description [Member] | San Jose One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 5,412
Cost Capitalized Subsequent to Initial Investment	0
Land	4,219
Building and Improvements	1,193
Total Investment in Real Estate	5,412
Accumulated Depreciation and Amortization	$ 131
Date of Initial Leasehold or Acquisition Investment	2,015
CALIFORNIA | Accumulated Depreciation And Amortization Description [Member] | San Leandro One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 5,978
Cost Capitalized Subsequent to Initial Investment	0
Land	5,078
Building and Improvements	900
Total Investment in Real Estate	5,978
Accumulated Depreciation and Amortization	$ 97
Date of Initial Leasehold or Acquisition Investment	2,015
CALIFORNIA | Accumulated Depreciation And Amortization Description [Member] | Shingle Springs One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 4,751
Cost Capitalized Subsequent to Initial Investment	0
Land	3,489
Building and Improvements	1,262
Total Investment in Real Estate	4,751
Accumulated Depreciation and Amortization	$ 128
Date of Initial Leasehold or Acquisition Investment	2,015
CALIFORNIA | Accumulated Depreciation And Amortization Description [Member] | Stockton One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,187
Cost Capitalized Subsequent to Initial Investment	0
Land	627
Building and Improvements	560
Total Investment in Real Estate	1,187
Accumulated Depreciation and Amortization	$ 58
Date of Initial Leasehold or Acquisition Investment	2,015
CALIFORNIA | Accumulated Depreciation And Amortization Description [Member] | Stockton Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,001
Cost Capitalized Subsequent to Initial Investment	0
Land	1,460
Building and Improvements	1,541
Total Investment in Real Estate	3,001
Accumulated Depreciation and Amortization	$ 145
Date of Initial Leasehold or Acquisition Investment	2,015
COLORADO | Accumulated Depreciation And Amortization Description [Member] | Boulder One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,900
Cost Capitalized Subsequent to Initial Investment	0
Land	2,875
Building and Improvements	1,025
Total Investment in Real Estate	3,900
Accumulated Depreciation and Amortization	$ 95
Date of Initial Leasehold or Acquisition Investment	2,015
COLORADO | Accumulated Depreciation And Amortization Description [Member] | Castle Rock One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 5,269
Cost Capitalized Subsequent to Initial Investment	0
Land	3,269
Building and Improvements	2,000
Total Investment in Real Estate	5,269
Accumulated Depreciation and Amortization	$ 197
Date of Initial Leasehold or Acquisition Investment	2,015
COLORADO | Accumulated Depreciation And Amortization Description [Member] | Golden One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 4,641
Cost Capitalized Subsequent to Initial Investment	0
Land	3,247
Building and Improvements	1,394
Total Investment in Real Estate	4,641
Accumulated Depreciation and Amortization	$ 134
Date of Initial Leasehold or Acquisition Investment	2,015

Schedule III - Real Estate an67

Schedule III - Real Estate and Accumulated Depreciation and Amortization Part 3 (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule Of Investments In Real Estate [Line Items]
Total Investment in Real Estate	$ 782,166	$ 783,233	$ 595,959	$ 570,275
Accumulated Depreciation And Amortization Description [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	720,099
Cost Capitalized Subsequent to Initial Investment	62,067
Land	474,232
Building and Improvements	307,934
Total Investment in Real Estate	782,166
Accumulated Depreciation and Amortization	120,576
COLORADO | Accumulated Depreciation And Amortization Description [Member] | Greenwood Village One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	4,077
Land	2,889
Building and Improvements	1,188
Total Investment in Real Estate	4,077
Accumulated Depreciation and Amortization	$ 109
Date of Initial Leasehold or Acquisition Investment	2,015
COLORADO | Accumulated Depreciation And Amortization Description [Member] | Highlands Ranch One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 4,356
Land	2,921
Building and Improvements	1,435
Total Investment in Real Estate	4,356
Accumulated Depreciation and Amortization	$ 140
Date of Initial Leasehold or Acquisition Investment	2,015
COLORADO | Accumulated Depreciation And Amortization Description [Member] | Lakewood One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,349
Land	1,541
Building and Improvements	808
Total Investment in Real Estate	2,349
Accumulated Depreciation and Amortization	$ 75
Date of Initial Leasehold or Acquisition Investment	2,015
COLORADO | Accumulated Depreciation And Amortization Description [Member] | Littleton One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 4,233
Land	2,366
Building and Improvements	1,867
Total Investment in Real Estate	4,233
Accumulated Depreciation and Amortization	$ 182
Date of Initial Leasehold or Acquisition Investment	2,015
COLORADO | Accumulated Depreciation And Amortization Description [Member] | Lone Tree One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 6,612
Land	5,125
Building and Improvements	1,487
Total Investment in Real Estate	6,612
Accumulated Depreciation and Amortization	$ 152
Date of Initial Leasehold or Acquisition Investment	2,015
COLORADO | Accumulated Depreciation And Amortization Description [Member] | Longmont One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,619
Land	2,315
Building and Improvements	1,304
Total Investment in Real Estate	3,619
Accumulated Depreciation and Amortization	$ 133
Date of Initial Leasehold or Acquisition Investment	2,015
COLORADO | Accumulated Depreciation And Amortization Description [Member] | Louisville One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 6,605
Land	5,228
Building and Improvements	1,377
Total Investment in Real Estate	6,605
Accumulated Depreciation and Amortization	$ 138
Date of Initial Leasehold or Acquisition Investment	2,015
COLORADO | Accumulated Depreciation And Amortization Description [Member] | Morrison One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 5,081
Land	3,018
Building and Improvements	2,063
Total Investment in Real Estate	5,081
Accumulated Depreciation and Amortization	$ 209
Date of Initial Leasehold or Acquisition Investment	2,015
COLORADO | Accumulated Depreciation And Amortization Description [Member] | Superior One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,748
Land	2,477
Building and Improvements	1,271
Total Investment in Real Estate	3,748
Accumulated Depreciation and Amortization	$ 124
Date of Initial Leasehold or Acquisition Investment	2,015
COLORADO | Accumulated Depreciation And Amortization Description [Member] | Thornton One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 5,003
Land	2,722
Building and Improvements	2,281
Total Investment in Real Estate	5,003
Accumulated Depreciation and Amortization	$ 223
Date of Initial Leasehold or Acquisition Investment	2,015
COLORADO | Accumulated Depreciation And Amortization Description [Member] | Westminster One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,457
Land	752
Building and Improvements	705
Total Investment in Real Estate	1,457
Accumulated Depreciation and Amortization	$ 67
Date of Initial Leasehold or Acquisition Investment	2,015
COLORADO | Accumulated Depreciation And Amortization Description [Member] | Wheat Ridge One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 6,151
Land	4,201
Building and Improvements	1,950
Total Investment in Real Estate	6,151
Accumulated Depreciation and Amortization	$ 197
Date of Initial Leasehold or Acquisition Investment	2,015
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Avon One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 731
Cost Capitalized Subsequent to Initial Investment	333
Land	403
Building and Improvements	661
Total Investment in Real Estate	1,064
Accumulated Depreciation and Amortization	$ 309
Date of Initial Leasehold or Acquisition Investment	2,002
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Bridgeport One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 346
Cost Capitalized Subsequent to Initial Investment	12
Land	230
Building and Improvements	128
Total Investment in Real Estate	358
Accumulated Depreciation and Amortization	$ 128
Date of Initial Leasehold or Acquisition Investment	1,985
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Bridgeport Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 339
Cost Capitalized Subsequent to Initial Investment	22
Land	220
Building and Improvements	141
Total Investment in Real Estate	361
Accumulated Depreciation and Amortization	$ 112
Date of Initial Leasehold or Acquisition Investment	1,985

Schedule III - Real Estate an68

Schedule III - Real Estate and Accumulated Depreciation and Amortization Part 4 (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule Of Investments In Real Estate [Line Items]
Total Investment in Real Estate	$ 782,166	$ 783,233	$ 595,959	$ 570,275
Accumulated Depreciation And Amortization Description [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	720,099
Cost Capitalized Subsequent to Initial Investment	62,067
Land	474,232
Building and Improvements	307,934
Total Investment in Real Estate	782,166
Accumulated Depreciation and Amortization	120,576
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Bridgeport Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	59
Cost Capitalized Subsequent to Initial Investment	380
Land	24
Building and Improvements	415
Total Investment in Real Estate	439
Accumulated Depreciation and Amortization	$ 196
Date of Initial Leasehold or Acquisition Investment	1,982
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Bridgeport Four [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 313
Cost Capitalized Subsequent to Initial Investment	298
Land	204
Building and Improvements	407
Total Investment in Real Estate	611
Accumulated Depreciation and Amortization	$ 162
Date of Initial Leasehold or Acquisition Investment	1,985
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Bridgeport Five [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 350
Cost Capitalized Subsequent to Initial Investment	330
Land	228
Building and Improvements	452
Total Investment in Real Estate	680
Accumulated Depreciation and Amortization	$ 203
Date of Initial Leasehold or Acquisition Investment	1,985
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Bridgeport Six [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 377
Cost Capitalized Subsequent to Initial Investment	394
Land	246
Building and Improvements	525
Total Investment in Real Estate	771
Accumulated Depreciation and Amortization	$ 254
Date of Initial Leasehold or Acquisition Investment	1,985
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Bristol One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 360
Building and Improvements	360
Total Investment in Real Estate	360
Accumulated Depreciation and Amortization	$ 360
Date of Initial Leasehold or Acquisition Investment	2,004
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Bristol Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 365
Land	237
Building and Improvements	128
Total Investment in Real Estate	365
Accumulated Depreciation and Amortization	$ 62
Date of Initial Leasehold or Acquisition Investment	2,004
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Bristol Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,594
Land	1,036
Building and Improvements	558
Total Investment in Real Estate	1,594
Accumulated Depreciation and Amortization	$ 272
Date of Initial Leasehold or Acquisition Investment	2,004
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Brookfield One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 57
Cost Capitalized Subsequent to Initial Investment	733
Land	20
Building and Improvements	770
Total Investment in Real Estate	790
Accumulated Depreciation and Amortization	$ 288
Date of Initial Leasehold or Acquisition Investment	1,985
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Cheshire One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 491
Cost Capitalized Subsequent to Initial Investment	(113)
Land	267
Building and Improvements	111
Total Investment in Real Estate	378
Accumulated Depreciation and Amortization	$ 46
Date of Initial Leasehold or Acquisition Investment	1,985
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Cobalt One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 396
Building and Improvements	396
Total Investment in Real Estate	396
Accumulated Depreciation and Amortization	$ 396
Date of Initial Leasehold or Acquisition Investment	2,004
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Darien One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 667
Cost Capitalized Subsequent to Initial Investment	323
Land	434
Building and Improvements	556
Total Investment in Real Estate	990
Accumulated Depreciation and Amortization	$ 352
Date of Initial Leasehold or Acquisition Investment	1,985
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Durham One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 994
Building and Improvements	994
Total Investment in Real Estate	994
Accumulated Depreciation and Amortization	$ 994
Date of Initial Leasehold or Acquisition Investment	2,004
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | East Hartford One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 208
Cost Capitalized Subsequent to Initial Investment	224
Land	54
Building and Improvements	378
Total Investment in Real Estate	432
Accumulated Depreciation and Amortization	$ 223
Date of Initial Leasehold or Acquisition Investment	1,982
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Ellington One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,295
Land	842
Building and Improvements	453
Total Investment in Real Estate	1,295
Accumulated Depreciation and Amortization	$ 221
Date of Initial Leasehold or Acquisition Investment	2,004
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Fairfield One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 430
Cost Capitalized Subsequent to Initial Investment	51
Land	280
Building and Improvements	201
Total Investment in Real Estate	481
Accumulated Depreciation and Amortization	$ 125
Date of Initial Leasehold or Acquisition Investment	1,985

Schedule III - Real Estate an69

Schedule III - Real Estate and Accumulated Depreciation and Amortization Part 5 (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule Of Investments In Real Estate [Line Items]
Total Investment in Real Estate	$ 782,166	$ 783,233	$ 595,959	$ 570,275
Accumulated Depreciation And Amortization Description [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	720,099
Cost Capitalized Subsequent to Initial Investment	62,067
Land	474,232
Building and Improvements	307,934
Total Investment in Real Estate	782,166
Accumulated Depreciation and Amortization	120,576
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Farmington One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	466
Land	303
Building and Improvements	163
Total Investment in Real Estate	466
Accumulated Depreciation and Amortization	$ 79
Date of Initial Leasehold or Acquisition Investment	2,004
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Franklin One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 51
Cost Capitalized Subsequent to Initial Investment	447
Land	20
Building and Improvements	478
Total Investment in Real Estate	498
Accumulated Depreciation and Amortization	$ 257
Date of Initial Leasehold or Acquisition Investment	1,982
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Hartford One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 571
Land	371
Building and Improvements	200
Total Investment in Real Estate	571
Accumulated Depreciation and Amortization	$ 97
Date of Initial Leasehold or Acquisition Investment	2,004
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Hartford Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 665
Land	432
Building and Improvements	233
Total Investment in Real Estate	665
Accumulated Depreciation and Amortization	$ 113
Date of Initial Leasehold or Acquisition Investment	2,004
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Manchester One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 110
Cost Capitalized Subsequent to Initial Investment	323
Land	50
Building and Improvements	383
Total Investment in Real Estate	433
Accumulated Depreciation and Amortization	$ 147
Date of Initial Leasehold or Acquisition Investment	1,987
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Meriden One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 208
Cost Capitalized Subsequent to Initial Investment	339
Land	84
Building and Improvements	463
Total Investment in Real Estate	547
Accumulated Depreciation and Amortization	$ 229
Date of Initial Leasehold or Acquisition Investment	1,982
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Meriden Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,532
Land	989
Building and Improvements	543
Total Investment in Real Estate	1,532
Accumulated Depreciation and Amortization	$ 269
Date of Initial Leasehold or Acquisition Investment	2,004
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Middletown One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 132
Cost Capitalized Subsequent to Initial Investment	564
Land	131
Building and Improvements	565
Total Investment in Real Estate	696
Accumulated Depreciation and Amortization	$ 242
Date of Initial Leasehold or Acquisition Investment	1,987
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Middletown Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,039
Land	675
Building and Improvements	364
Total Investment in Real Estate	1,039
Accumulated Depreciation and Amortization	$ 177
Date of Initial Leasehold or Acquisition Investment	2,004
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Milford One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 293
Cost Capitalized Subsequent to Initial Investment	45
Land	191
Building and Improvements	147
Total Investment in Real Estate	338
Accumulated Depreciation and Amortization	$ 120
Date of Initial Leasehold or Acquisition Investment	1,985
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Milford Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 57
Cost Capitalized Subsequent to Initial Investment	295
Land	30
Building and Improvements	322
Total Investment in Real Estate	352
Accumulated Depreciation and Amortization	$ 103
Date of Initial Leasehold or Acquisition Investment	1,985
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Montville [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 57
Cost Capitalized Subsequent to Initial Investment	332
Land	24
Building and Improvements	365
Total Investment in Real Estate	389
Accumulated Depreciation and Amortization	$ 146
Date of Initial Leasehold or Acquisition Investment	1,982
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | New Britain One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 391
Land	254
Building and Improvements	137
Total Investment in Real Estate	391
Accumulated Depreciation and Amortization	$ 67
Date of Initial Leasehold or Acquisition Investment	2,004
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | New Haven One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 217
Cost Capitalized Subsequent to Initial Investment	297
Land	141
Building and Improvements	373
Total Investment in Real Estate	514
Accumulated Depreciation and Amortization	$ 135
Date of Initial Leasehold or Acquisition Investment	1,985
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | New Haven Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 539
Cost Capitalized Subsequent to Initial Investment	454
Land	351
Building and Improvements	642
Total Investment in Real Estate	993
Accumulated Depreciation and Amortization	$ 373
Date of Initial Leasehold or Acquisition Investment	1,985
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | New Haven Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,414
Cost Capitalized Subsequent to Initial Investment	(275)
Land	569
Building and Improvements	570
Total Investment in Real Estate	1,139
Accumulated Depreciation and Amortization	$ 99
Date of Initial Leasehold or Acquisition Investment	1,985
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Newington One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 954
Land	620
Building and Improvements	334
Total Investment in Real Estate	954
Accumulated Depreciation and Amortization	$ 162
Date of Initial Leasehold or Acquisition Investment	2,004

Schedule III - Real Estate an70

Schedule III - Real Estate and Accumulated Depreciation and Amortization Part 6 (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule Of Investments In Real Estate [Line Items]
Total Investment in Real Estate	$ 782,166	$ 783,233	$ 595,959	$ 570,275
Accumulated Depreciation And Amortization Description [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	720,099
Cost Capitalized Subsequent to Initial Investment	62,067
Land	474,232
Building and Improvements	307,934
Total Investment in Real Estate	782,166
Accumulated Depreciation and Amortization	120,576
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | North Haven One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	405
Land	252
Building and Improvements	153
Total Investment in Real Estate	405
Accumulated Depreciation and Amortization	$ 84
Date of Initial Leasehold or Acquisition Investment	2,004
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Norwalk One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 511
Cost Capitalized Subsequent to Initial Investment	45
Land	332
Building and Improvements	224
Total Investment in Real Estate	556
Accumulated Depreciation and Amortization	$ 181
Date of Initial Leasehold or Acquisition Investment	1,985
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Norwalk Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Cost Capitalized Subsequent to Initial Investment	$ 942
Land	402
Building and Improvements	540
Total Investment in Real Estate	942
Accumulated Depreciation and Amortization	$ 188
Date of Initial Leasehold or Acquisition Investment	1,988
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Norwich [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 107
Cost Capitalized Subsequent to Initial Investment	323
Land	44
Building and Improvements	386
Total Investment in Real Estate	430
Accumulated Depreciation and Amortization	$ 172
Date of Initial Leasehold or Acquisition Investment	1,982
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Old Greenwich One [Member]
Schedule Of Investments In Real Estate [Line Items]
Cost Capitalized Subsequent to Initial Investment	$ 1,223
Land	620
Building and Improvements	603
Total Investment in Real Estate	1,223
Accumulated Depreciation and Amortization	$ 194
Date of Initial Leasehold or Acquisition Investment	1,969
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Plainville One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 545
Land	354
Building and Improvements	191
Total Investment in Real Estate	545
Accumulated Depreciation and Amortization	$ 93
Date of Initial Leasehold or Acquisition Investment	2,004
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Plymouth One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 931
Land	605
Building and Improvements	326
Total Investment in Real Estate	931
Accumulated Depreciation and Amortization	$ 159
Date of Initial Leasehold or Acquisition Investment	2,004
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Ridgefield One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 402
Cost Capitalized Subsequent to Initial Investment	304
Land	167
Building and Improvements	539
Total Investment in Real Estate	706
Accumulated Depreciation and Amortization	$ 324
Date of Initial Leasehold or Acquisition Investment	1,985
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Ridgefield Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 536
Cost Capitalized Subsequent to Initial Investment	466
Land	348
Building and Improvements	654
Total Investment in Real Estate	1,002
Accumulated Depreciation and Amortization	$ 318
Date of Initial Leasehold or Acquisition Investment	1,985
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | South Windham One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 644
Cost Capitalized Subsequent to Initial Investment	1,398
Land	598
Building and Improvements	1,444
Total Investment in Real Estate	2,042
Accumulated Depreciation and Amortization	$ 548
Date of Initial Leasehold or Acquisition Investment	2,004
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | South Windsor One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 545
Land	337
Building and Improvements	208
Total Investment in Real Estate	545
Accumulated Depreciation and Amortization	$ 115
Date of Initial Leasehold or Acquisition Investment	2,004
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Stamford One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 507
Cost Capitalized Subsequent to Initial Investment	16
Land	330
Building and Improvements	193
Total Investment in Real Estate	523
Accumulated Depreciation and Amortization	$ 150
Date of Initial Leasehold or Acquisition Investment	1,985
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Stamford Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 603
Cost Capitalized Subsequent to Initial Investment	343
Land	393
Building and Improvements	553
Total Investment in Real Estate	946
Accumulated Depreciation and Amortization	$ 265
Date of Initial Leasehold or Acquisition Investment	1,985
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Stamford Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 508
Cost Capitalized Subsequent to Initial Investment	476
Land	330
Building and Improvements	654
Total Investment in Real Estate	984
Accumulated Depreciation and Amortization	$ 260
Date of Initial Leasehold or Acquisition Investment	1,985
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Suffield One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 237
Cost Capitalized Subsequent to Initial Investment	603
Land	201
Building and Improvements	639
Total Investment in Real Estate	840
Accumulated Depreciation and Amortization	$ 481
Date of Initial Leasehold or Acquisition Investment	2,004
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Toll [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 108
Cost Capitalized Subsequent to Initial Investment	379
Land	44
Building and Improvements	443
Total Investment in Real Estate	487
Accumulated Depreciation and Amortization	$ 220
Date of Initial Leasehold or Acquisition Investment	1,982
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Vernon One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,434
Building and Improvements	1,434
Total Investment in Real Estate	1,434
Accumulated Depreciation and Amortization	$ 1,434
Date of Initial Leasehold or Acquisition Investment	2,004
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Wallingford One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 551
Land	335
Building and Improvements	216
Total Investment in Real Estate	551
Accumulated Depreciation and Amortization	$ 123
Date of Initial Leasehold or Acquisition Investment	2,004

Schedule III - Real Estate an71

Schedule III - Real Estate and Accumulated Depreciation and Amortization Part 7 (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule Of Investments In Real Estate [Line Items]
Total Investment in Real Estate	$ 782,166	$ 783,233	$ 595,959	$ 570,275
Accumulated Depreciation And Amortization Description [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	720,099
Cost Capitalized Subsequent to Initial Investment	62,067
Land	474,232
Building and Improvements	307,934
Total Investment in Real Estate	782,166
Accumulated Depreciation and Amortization	120,576
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Waterbury One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	469
Land	305
Building and Improvements	164
Total Investment in Real Estate	469
Accumulated Depreciation and Amortization	$ 80
Date of Initial Leasehold or Acquisition Investment	2,004
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Waterbury Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 515
Land	335
Building and Improvements	180
Total Investment in Real Estate	515
Accumulated Depreciation and Amortization	$ 88
Date of Initial Leasehold or Acquisition Investment	2,004
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Waterbury Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 804
Land	516
Building and Improvements	288
Total Investment in Real Estate	804
Accumulated Depreciation and Amortization	$ 145
Date of Initial Leasehold or Acquisition Investment	2,004
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Watertown Five [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 352
Cost Capitalized Subsequent to Initial Investment	343
Land	204
Building and Improvements	491
Total Investment in Real Estate	695
Accumulated Depreciation and Amortization	$ 215
Date of Initial Leasehold or Acquisition Investment	1,992
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Watertown Six [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 925
Land	567
Building and Improvements	358
Total Investment in Real Estate	925
Accumulated Depreciation and Amortization	$ 201
Date of Initial Leasehold or Acquisition Investment	2,004
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | West Haven One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 185
Cost Capitalized Subsequent to Initial Investment	322
Land	74
Building and Improvements	433
Total Investment in Real Estate	507
Accumulated Depreciation and Amortization	$ 214
Date of Initial Leasehold or Acquisition Investment	1,982
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | West Haven Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,215
Land	790
Building and Improvements	425
Total Investment in Real Estate	1,215
Accumulated Depreciation and Amortization	$ 207
Date of Initial Leasehold or Acquisition Investment	2,004
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Westbrook One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 345
Building and Improvements	345
Total Investment in Real Estate	345
Accumulated Depreciation and Amortization	$ 345
Date of Initial Leasehold or Acquisition Investment	2,004
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Westport One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 604
Cost Capitalized Subsequent to Initial Investment	12
Land	393
Building and Improvements	223
Total Investment in Real Estate	616
Accumulated Depreciation and Amortization	$ 172
Date of Initial Leasehold or Acquisition Investment	1,985
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Wethersfield One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 447
Building and Improvements	447
Total Investment in Real Estate	447
Accumulated Depreciation and Amortization	$ 447
Date of Initial Leasehold or Acquisition Investment	2,004
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Willimantic One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 717
Land	466
Building and Improvements	251
Total Investment in Real Estate	717
Accumulated Depreciation and Amortization	$ 122
Date of Initial Leasehold or Acquisition Investment	2,004
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Wilton One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 519
Cost Capitalized Subsequent to Initial Investment	364
Land	338
Building and Improvements	545
Total Investment in Real Estate	883
Accumulated Depreciation and Amortization	$ 242
Date of Initial Leasehold or Acquisition Investment	1,985
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Windsor Locks One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,031
Land	670
Building and Improvements	361
Total Investment in Real Estate	1,031
Accumulated Depreciation and Amortization	$ 176
Date of Initial Leasehold or Acquisition Investment	2,004
CONNECTICUT | Accumulated Depreciation And Amortization Description [Member] | Windsor Locks Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,434
Cost Capitalized Subsequent to Initial Investment	1,400
Land	1,055
Building and Improvements	1,779
Total Investment in Real Estate	2,834
Accumulated Depreciation and Amortization	$ 1,453
Date of Initial Leasehold or Acquisition Investment	2,004
DISTRICT OF COLUMBIA | Accumulated Depreciation And Amortization Description [Member] | Washington One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 848
Land	418
Building and Improvements	430
Total Investment in Real Estate	848
Accumulated Depreciation and Amortization	$ 79
Date of Initial Leasehold or Acquisition Investment	2,013
DISTRICT OF COLUMBIA | Accumulated Depreciation And Amortization Description [Member] | Washington Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 941
Land	664
Building and Improvements	277
Total Investment in Real Estate	941
Accumulated Depreciation and Amortization	$ 58
Date of Initial Leasehold or Acquisition Investment	2,013
FLORIDA | Accumulated Depreciation And Amortization Description [Member] | Orlando One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 868
Cost Capitalized Subsequent to Initial Investment	33
Land	401
Building and Improvements	500
Total Investment in Real Estate	901
Accumulated Depreciation and Amortization	$ 333
Date of Initial Leasehold or Acquisition Investment	2,000

Schedule III - Real Estate an72

Schedule III - Real Estate and Accumulated Depreciation and Amortization Part 8 (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule Of Investments In Real Estate [Line Items]
Total Investment in Real Estate	$ 782,166	$ 783,233	$ 595,959	$ 570,275
Accumulated Depreciation And Amortization Description [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	720,099
Cost Capitalized Subsequent to Initial Investment	62,067
Land	474,232
Building and Improvements	307,934
Total Investment in Real Estate	782,166
Accumulated Depreciation and Amortization	120,576
HAWAII | Accumulated Depreciation And Amortization Description [Member] | Haleiwa One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	1,522
Land	1,058
Building and Improvements	464
Total Investment in Real Estate	1,522
Accumulated Depreciation and Amortization	$ 300
Date of Initial Leasehold or Acquisition Investment	2,007
HAWAII | Accumulated Depreciation And Amortization Description [Member] | Honolulu One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,069
Cost Capitalized Subsequent to Initial Investment	16
Land	981
Building and Improvements	104
Total Investment in Real Estate	1,085
Accumulated Depreciation and Amortization	$ 75
Date of Initial Leasehold or Acquisition Investment	2,007
HAWAII | Accumulated Depreciation And Amortization Description [Member] | Honolulu Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,539
Land	1,219
Building and Improvements	320
Total Investment in Real Estate	1,539
Accumulated Depreciation and Amortization	$ 162
Date of Initial Leasehold or Acquisition Investment	2,007
HAWAII | Accumulated Depreciation And Amortization Description [Member] | Honolulu Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,769
Land	1,192
Building and Improvements	577
Total Investment in Real Estate	1,769
Accumulated Depreciation and Amortization	$ 269
Date of Initial Leasehold or Acquisition Investment	2,007
HAWAII | Accumulated Depreciation And Amortization Description [Member] | Honolulu Four [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 9,211
Land	8,194
Building and Improvements	1,017
Total Investment in Real Estate	9,211
Accumulated Depreciation and Amortization	$ 490
Date of Initial Leasehold or Acquisition Investment	2,007
HAWAII | Accumulated Depreciation And Amortization Description [Member] | Kaneohe One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,364
Land	822
Building and Improvements	542
Total Investment in Real Estate	1,364
Accumulated Depreciation and Amortization	$ 295
Date of Initial Leasehold or Acquisition Investment	2,007
HAWAII | Accumulated Depreciation And Amortization Description [Member] | Kaneohe Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,978
Cost Capitalized Subsequent to Initial Investment	182
Land	1,473
Building and Improvements	687
Total Investment in Real Estate	2,160
Accumulated Depreciation and Amortization	$ 297
Date of Initial Leasehold or Acquisition Investment	2,007
HAWAII | Accumulated Depreciation And Amortization Description [Member] | Waianae One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,520
Land	648
Building and Improvements	872
Total Investment in Real Estate	1,520
Accumulated Depreciation and Amortization	$ 406
Date of Initial Leasehold or Acquisition Investment	2,007
HAWAII | Accumulated Depreciation And Amortization Description [Member] | Waianae Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,997
Land	871
Building and Improvements	1,126
Total Investment in Real Estate	1,997
Accumulated Depreciation and Amortization	$ 527
Date of Initial Leasehold or Acquisition Investment	2,007
HAWAII | Accumulated Depreciation And Amortization Description [Member] | Waipahu One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,458
Land	945
Building and Improvements	1,513
Total Investment in Real Estate	2,458
Accumulated Depreciation and Amortization	$ 676
Date of Initial Leasehold or Acquisition Investment	2,007
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Arlington One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 518
Cost Capitalized Subsequent to Initial Investment	28
Land	338
Building and Improvements	208
Total Investment in Real Estate	546
Accumulated Depreciation and Amortization	$ 164
Date of Initial Leasehold or Acquisition Investment	1,985
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Auburn One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 174
Cost Capitalized Subsequent to Initial Investment	213
Land	125
Building and Improvements	262
Total Investment in Real Estate	387
Accumulated Depreciation and Amortization	$ 122
Date of Initial Leasehold or Acquisition Investment	1,986
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Auburn Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Cost Capitalized Subsequent to Initial Investment	$ 535
Land	388
Building and Improvements	147
Total Investment in Real Estate	535
Accumulated Depreciation and Amortization	$ 29
Date of Initial Leasehold or Acquisition Investment	1,996
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Auburn Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 600
Land	600
Total Investment in Real Estate	$ 600
Date of Initial Leasehold or Acquisition Investment	2,011
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Auburn Four [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 625
Land	625
Total Investment in Real Estate	$ 625
Date of Initial Leasehold or Acquisition Investment	2,011
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Auburn Five [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 369
Cost Capitalized Subsequent to Initial Investment	264
Land	240
Building and Improvements	393
Total Investment in Real Estate	633
Accumulated Depreciation and Amortization	$ 182
Date of Initial Leasehold or Acquisition Investment	1,991
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Auburn Six [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 725
Land	725
Total Investment in Real Estate	$ 725
Date of Initial Leasehold or Acquisition Investment	2,011
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Auburn Seven [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 800
Building and Improvements	800
Total Investment in Real Estate	800
Accumulated Depreciation and Amortization	$ 442
Date of Initial Leasehold or Acquisition Investment	2,011
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Barre One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 536
Cost Capitalized Subsequent to Initial Investment	12
Land	348
Building and Improvements	200
Total Investment in Real Estate	548
Accumulated Depreciation and Amortization	$ 111
Date of Initial Leasehold or Acquisition Investment	1,991
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Bedford One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,350
Land	1,350
Total Investment in Real Estate	$ 1,350
Date of Initial Leasehold or Acquisition Investment	2,011
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Bellingham One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 734
Cost Capitalized Subsequent to Initial Investment	73
Land	476
Building and Improvements	331
Total Investment in Real Estate	807
Accumulated Depreciation and Amortization	$ 269
Date of Initial Leasehold or Acquisition Investment	1,985
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Belmont One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 390
Cost Capitalized Subsequent to Initial Investment	29
Land	254
Building and Improvements	165
Total Investment in Real Estate	419
Accumulated Depreciation and Amortization	$ 132
Date of Initial Leasehold or Acquisition Investment	1,985
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Bradford One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 650
Land	650
Total Investment in Real Estate	$ 650
Date of Initial Leasehold or Acquisition Investment	2,011
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Burlington One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 600
Land	600
Total Investment in Real Estate	$ 600
Date of Initial Leasehold or Acquisition Investment	2,011
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Burlington Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,250
Land	1,250
Total Investment in Real Estate	$ 1,250
Date of Initial Leasehold or Acquisition Investment	2,011

Schedule III - Real Estate an73

Schedule III - Real Estate and Accumulated Depreciation and Amortization Part 9 (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule Of Investments In Real Estate [Line Items]
Total Investment in Real Estate	$ 782,166	$ 783,233	$ 595,959	$ 570,275
Accumulated Depreciation And Amortization Description [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	720,099
Cost Capitalized Subsequent to Initial Investment	62,067
Land	474,232
Building and Improvements	307,934
Total Investment in Real Estate	782,166
Accumulated Depreciation and Amortization	120,576
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Chelmsford One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	715
Building and Improvements	715
Total Investment in Real Estate	715
Accumulated Depreciation and Amortization	$ 231
Date of Initial Leasehold or Acquisition Investment	2,012
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Danvers One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 400
Land	400
Total Investment in Real Estate	$ 400
Date of Initial Leasehold or Acquisition Investment	2,011
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Dracut One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 450
Land	450
Total Investment in Real Estate	$ 450
Date of Initial Leasehold or Acquisition Investment	2,011
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Falmouth One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 519
Cost Capitalized Subsequent to Initial Investment	127
Land	458
Building and Improvements	188
Total Investment in Real Estate	646
Accumulated Depreciation and Amortization	$ 121
Date of Initial Leasehold or Acquisition Investment	1,988
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Fitchburg One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 390
Cost Capitalized Subsequent to Initial Investment	33
Land	254
Building and Improvements	169
Total Investment in Real Estate	423
Accumulated Depreciation and Amortization	$ 107
Date of Initial Leasehold or Acquisition Investment	1,992
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Foxborough One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 427
Cost Capitalized Subsequent to Initial Investment	98
Land	325
Building and Improvements	200
Total Investment in Real Estate	525
Accumulated Depreciation and Amortization	$ 135
Date of Initial Leasehold or Acquisition Investment	1,990
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Framingham One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 400
Cost Capitalized Subsequent to Initial Investment	23
Land	260
Building and Improvements	163
Total Investment in Real Estate	423
Accumulated Depreciation and Amortization	$ 100
Date of Initial Leasehold or Acquisition Investment	1,991
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Gardner One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 550
Land	550
Total Investment in Real Estate	$ 550
Date of Initial Leasehold or Acquisition Investment	2,011
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Gardner Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,008
Cost Capitalized Subsequent to Initial Investment	282
Land	657
Building and Improvements	633
Total Investment in Real Estate	1,290
Accumulated Depreciation and Amortization	$ 416
Date of Initial Leasehold or Acquisition Investment	1,985
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Gardners One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 787
Land	638
Building and Improvements	149
Total Investment in Real Estate	787
Accumulated Depreciation and Amortization	$ 23
Date of Initial Leasehold or Acquisition Investment	2,014
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Hingham One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 353
Cost Capitalized Subsequent to Initial Investment	111
Land	243
Building and Improvements	221
Total Investment in Real Estate	464
Accumulated Depreciation and Amortization	$ 152
Date of Initial Leasehold or Acquisition Investment	1,989
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Hyde Park One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 499
Cost Capitalized Subsequent to Initial Investment	157
Land	322
Building and Improvements	334
Total Investment in Real Estate	656
Accumulated Depreciation and Amortization	$ 194
Date of Initial Leasehold or Acquisition Investment	1,985
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Leominster One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 571
Land	199
Building and Improvements	372
Total Investment in Real Estate	571
Accumulated Depreciation and Amortization	$ 89
Date of Initial Leasehold or Acquisition Investment	2,012
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Lowell One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 375
Cost Capitalized Subsequent to Initial Investment	9
Land	250
Building and Improvements	134
Total Investment in Real Estate	384
Accumulated Depreciation and Amortization	$ 134
Date of Initial Leasehold or Acquisition Investment	1,986
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Lowell Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 361
Cost Capitalized Subsequent to Initial Investment	90
Land	201
Building and Improvements	250
Total Investment in Real Estate	451
Accumulated Depreciation and Amortization	$ 246
Date of Initial Leasehold or Acquisition Investment	1,985
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Lowell Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Cost Capitalized Subsequent to Initial Investment	$ 619
Land	429
Building and Improvements	190
Total Investment in Real Estate	619
Accumulated Depreciation and Amortization	$ 37
Date of Initial Leasehold or Acquisition Investment	1,996
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Lynn One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 400
Land	400
Total Investment in Real Estate	$ 400
Date of Initial Leasehold or Acquisition Investment	2,011
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Lynn Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 850
Land	850
Total Investment in Real Estate	$ 850
Date of Initial Leasehold or Acquisition Investment	2,011
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Marlborough One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 550
Land	550
Total Investment in Real Estate	$ 550
Date of Initial Leasehold or Acquisition Investment	2,011
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Maynard One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 736
Cost Capitalized Subsequent to Initial Investment	98
Land	479
Building and Improvements	355
Total Investment in Real Estate	834
Accumulated Depreciation and Amortization	$ 219
Date of Initial Leasehold or Acquisition Investment	1,985
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Melrose One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 600
Land	600
Total Investment in Real Estate	$ 600
Date of Initial Leasehold or Acquisition Investment	2,011
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Methuen One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 300
Cost Capitalized Subsequent to Initial Investment	134
Land	150
Building and Improvements	284
Total Investment in Real Estate	434
Accumulated Depreciation and Amortization	$ 217
Date of Initial Leasehold or Acquisition Investment	1,986
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Methuen Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 380
Cost Capitalized Subsequent to Initial Investment	64
Land	246
Building and Improvements	198
Total Investment in Real Estate	444
Accumulated Depreciation and Amortization	$ 166
Date of Initial Leasehold or Acquisition Investment	1,985
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Methuen Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 491
Cost Capitalized Subsequent to Initial Investment	97
Land	319
Building and Improvements	269
Total Investment in Real Estate	588
Accumulated Depreciation and Amortization	$ 162
Date of Initial Leasehold or Acquisition Investment	1,985
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Methuen Four [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 650
Land	650
Total Investment in Real Estate	$ 650
Date of Initial Leasehold or Acquisition Investment	2,011
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Newton One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 691
Cost Capitalized Subsequent to Initial Investment	124
Land	450
Building and Improvements	365
Total Investment in Real Estate	815
Accumulated Depreciation and Amortization	$ 268
Date of Initial Leasehold or Acquisition Investment	1,985
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | North Andover One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 394
Cost Capitalized Subsequent to Initial Investment	32
Land	256
Building and Improvements	170
Total Investment in Real Estate	426
Accumulated Depreciation and Amortization	$ 137
Date of Initial Leasehold or Acquisition Investment	1,985

Schedule III - Real Estate an74

Schedule III - Real Estate and Accumulated Depreciation and Amortization Part 10 (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule Of Investments In Real Estate [Line Items]
Total Investment in Real Estate	$ 782,166	$ 783,233	$ 595,959	$ 570,275
Accumulated Depreciation And Amortization Description [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	720,099
Cost Capitalized Subsequent to Initial Investment	62,067
Land	474,232
Building and Improvements	307,934
Total Investment in Real Estate	782,166
Accumulated Depreciation and Amortization	120,576
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Peabody One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	400
Cost Capitalized Subsequent to Initial Investment	18
Land	252
Building and Improvements	166
Total Investment in Real Estate	418
Accumulated Depreciation and Amortization	$ 166
Date of Initial Leasehold or Acquisition Investment	1,986
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Peabody Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 550
Land	550
Total Investment in Real Estate	$ 550
Date of Initial Leasehold or Acquisition Investment	2,011
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Peabody Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 650
Land	650
Total Investment in Real Estate	$ 650
Date of Initial Leasehold or Acquisition Investment	2,011
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Randolph One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 573
Cost Capitalized Subsequent to Initial Investment	238
Land	430
Building and Improvements	381
Total Investment in Real Estate	811
Accumulated Depreciation and Amortization	$ 228
Date of Initial Leasehold or Acquisition Investment	1,985
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Revere One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,300
Land	1,300
Total Investment in Real Estate	$ 1,300
Date of Initial Leasehold or Acquisition Investment	2,011
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Rockland One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 579
Cost Capitalized Subsequent to Initial Investment	45
Land	377
Building and Improvements	247
Total Investment in Real Estate	624
Accumulated Depreciation and Amortization	$ 198
Date of Initial Leasehold or Acquisition Investment	1,985
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Salem One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 600
Land	600
Total Investment in Real Estate	$ 600
Date of Initial Leasehold or Acquisition Investment	2,011
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Seekonk One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,073
Cost Capitalized Subsequent to Initial Investment	(261)
Land	576
Building and Improvements	236
Total Investment in Real Estate	812
Accumulated Depreciation and Amortization	$ 88
Date of Initial Leasehold or Acquisition Investment	1,985
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Shrewsbury One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 400
Land	400
Total Investment in Real Estate	$ 400
Date of Initial Leasehold or Acquisition Investment	2,011
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Shrewsbury Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 450
Land	450
Total Investment in Real Estate	$ 450
Date of Initial Leasehold or Acquisition Investment	2,011
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Sterling One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 476
Cost Capitalized Subsequent to Initial Investment	2
Land	309
Building and Improvements	169
Total Investment in Real Estate	478
Accumulated Depreciation and Amortization	$ 94
Date of Initial Leasehold or Acquisition Investment	1,991
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Sutton One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 714
Cost Capitalized Subsequent to Initial Investment	62
Land	464
Building and Improvements	312
Total Investment in Real Estate	776
Accumulated Depreciation and Amortization	$ 199
Date of Initial Leasehold or Acquisition Investment	1,993
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Tewksbury One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 125
Cost Capitalized Subsequent to Initial Investment	506
Land	75
Building and Improvements	556
Total Investment in Real Estate	631
Accumulated Depreciation and Amortization	$ 170
Date of Initial Leasehold or Acquisition Investment	1,986
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Tewksbury Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,200
Land	1,200
Total Investment in Real Estate	$ 1,200
Date of Initial Leasehold or Acquisition Investment	2,011
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Upton One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 428
Cost Capitalized Subsequent to Initial Investment	115
Land	279
Building and Improvements	264
Total Investment in Real Estate	543
Accumulated Depreciation and Amortization	$ 125
Date of Initial Leasehold or Acquisition Investment	1,991
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Wakefield One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 900
Land	900
Total Investment in Real Estate	$ 900
Date of Initial Leasehold or Acquisition Investment	2,011
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Walpole One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 450
Cost Capitalized Subsequent to Initial Investment	92
Land	293
Building and Improvements	249
Total Investment in Real Estate	542
Accumulated Depreciation and Amortization	$ 146
Date of Initial Leasehold or Acquisition Investment	1,985
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Watertown One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 358
Cost Capitalized Subsequent to Initial Investment	211
Land	321
Building and Improvements	248
Total Investment in Real Estate	569
Accumulated Depreciation and Amortization	$ 142
Date of Initial Leasehold or Acquisition Investment	1,985
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Webster One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,012
Cost Capitalized Subsequent to Initial Investment	618
Land	659
Building and Improvements	971
Total Investment in Real Estate	1,630
Accumulated Depreciation and Amortization	$ 474
Date of Initial Leasehold or Acquisition Investment	1,985
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | West Boylston One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 312
Cost Capitalized Subsequent to Initial Investment	29
Land	203
Building and Improvements	138
Total Investment in Real Estate	341
Accumulated Depreciation and Amortization	$ 89
Date of Initial Leasehold or Acquisition Investment	1,991
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | West Roxbury One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 491
Cost Capitalized Subsequent to Initial Investment	86
Land	319
Building and Improvements	258
Total Investment in Real Estate	577
Accumulated Depreciation and Amortization	$ 181
Date of Initial Leasehold or Acquisition Investment	1,985
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Westborough One[Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 312
Cost Capitalized Subsequent to Initial Investment	21
Land	203
Building and Improvements	130
Total Investment in Real Estate	333
Accumulated Depreciation and Amortization	$ 81
Date of Initial Leasehold or Acquisition Investment	1,991
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Westborough Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 450
Land	450
Total Investment in Real Estate	$ 450
Date of Initial Leasehold or Acquisition Investment	2,011
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Westford One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 275
Cost Capitalized Subsequent to Initial Investment	81
Land	175
Building and Improvements	181
Total Investment in Real Estate	356
Accumulated Depreciation and Amortization	$ 142
Date of Initial Leasehold or Acquisition Investment	1,986
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Wilmington One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 600
Land	600
Total Investment in Real Estate	$ 600
Date of Initial Leasehold or Acquisition Investment	2,011
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Wilmington Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,300
Land	1,300
Total Investment in Real Estate	$ 1,300
Date of Initial Leasehold or Acquisition Investment	2,011

Schedule III - Real Estate an75

Schedule III - Real Estate and Accumulated Depreciation and Amortization Part 11 (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule Of Investments In Real Estate [Line Items]
Total Investment in Real Estate	$ 782,166	$ 783,233	$ 595,959	$ 570,275
Accumulated Depreciation And Amortization Description [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	720,099
Cost Capitalized Subsequent to Initial Investment	62,067
Land	474,232
Building and Improvements	307,934
Total Investment in Real Estate	782,166
Accumulated Depreciation and Amortization	120,576
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Woburn One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	350
Cost Capitalized Subsequent to Initial Investment	63
Land	200
Building and Improvements	213
Total Investment in Real Estate	413
Accumulated Depreciation and Amortization	$ 201
Date of Initial Leasehold or Acquisition Investment	1,986
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Woburn Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 508
Cost Capitalized Subsequent to Initial Investment	394
Land	508
Building and Improvements	394
Total Investment in Real Estate	902
Accumulated Depreciation and Amortization	$ 250
Date of Initial Leasehold or Acquisition Investment	1,985
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Worcester One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 400
Land	400
Total Investment in Real Estate	$ 400
Date of Initial Leasehold or Acquisition Investment	2,011
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Worcester Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 500
Land	500
Total Investment in Real Estate	$ 500
Date of Initial Leasehold or Acquisition Investment	2,011
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Worcester Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 550
Land	550
Total Investment in Real Estate	$ 550
Date of Initial Leasehold or Acquisition Investment	2,011
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Worcester Four [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 547
Cost Capitalized Subsequent to Initial Investment	11
Land	356
Building and Improvements	202
Total Investment in Real Estate	558
Accumulated Depreciation and Amortization	$ 115
Date of Initial Leasehold or Acquisition Investment	1,991
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Worcester Five [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 498
Cost Capitalized Subsequent to Initial Investment	330
Land	322
Building and Improvements	506
Total Investment in Real Estate	828
Accumulated Depreciation and Amortization	$ 261
Date of Initial Leasehold or Acquisition Investment	1,985
MASSACHUSETTS | Accumulated Depreciation And Amortization Description [Member] | Worcester Six [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 979
Cost Capitalized Subsequent to Initial Investment	7
Land	636
Building and Improvements	350
Total Investment in Real Estate	986
Accumulated Depreciation and Amortization	$ 195
Date of Initial Leasehold or Acquisition Investment	1,991
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Accokeek One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 692
Land	692
Total Investment in Real Estate	$ 692
Date of Initial Leasehold or Acquisition Investment	2,010
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Baltimore One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 802
Building and Improvements	802
Total Investment in Real Estate	802
Accumulated Depreciation and Amortization	$ 392
Date of Initial Leasehold or Acquisition Investment	2,007
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Baltimore Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,259
Land	722
Building and Improvements	1,537
Total Investment in Real Estate	2,259
Accumulated Depreciation and Amortization	$ 701
Date of Initial Leasehold or Acquisition Investment	2,007
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Beltsville One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 525
Land	525
Total Investment in Real Estate	$ 525
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Beltsville Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 731
Land	731
Total Investment in Real Estate	$ 731
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Beltsville Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,050
Land	1,050
Total Investment in Real Estate	$ 1,050
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Beltsville Four [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,130
Land	1,130
Total Investment in Real Estate	$ 1,130
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Bladensburg One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 571
Land	571
Total Investment in Real Estate	$ 571
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Bowie One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,084
Land	1,084
Total Investment in Real Estate	$ 1,084
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Capitol Heights One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 628
Land	628
Total Investment in Real Estate	$ 628
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Clinton One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 651
Land	651
Total Investment in Real Estate	$ 651
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | College Park One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 445
Land	445
Total Investment in Real Estate	$ 445
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | College Park Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 536
Land	536
Total Investment in Real Estate	$ 536
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | District Heights One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 388
Land	388
Total Investment in Real Estate	$ 388
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | District Heights Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 479
Land	479
Total Investment in Real Estate	$ 479
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Ellicott City One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 895
Building and Improvements	895
Total Investment in Real Estate	895
Accumulated Depreciation and Amortization	$ 460
Date of Initial Leasehold or Acquisition Investment	2,007

Schedule III - Real Estate an76

Schedule III - Real Estate and Accumulated Depreciation and Amortization Part 12 (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule Of Investments In Real Estate [Line Items]
Total Investment in Real Estate	$ 782,166	$ 783,233	$ 595,959	$ 570,275
Accumulated Depreciation And Amortization Description [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	720,099
Cost Capitalized Subsequent to Initial Investment	62,067
Land	474,232
Building and Improvements	307,934
Total Investment in Real Estate	782,166
Accumulated Depreciation and Amortization	120,576
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Emmitsburg One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	147
Cost Capitalized Subsequent to Initial Investment	191
Land	102
Building and Improvements	236
Total Investment in Real Estate	338
Accumulated Depreciation and Amortization	$ 154
Date of Initial Leasehold or Acquisition Investment	1,986
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Forestville One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,039
Land	1,039
Total Investment in Real Estate	$ 1,039
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Fort Washington One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 422
Land	422
Total Investment in Real Estate	$ 422
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Greenbelt One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,153
Land	1,153
Total Investment in Real Estate	$ 1,153
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Hyattsville One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 491
Land	491
Total Investment in Real Estate	$ 491
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Hyattsville Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 594
Land	594
Total Investment in Real Estate	$ 594
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Landover One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 662
Land	662
Total Investment in Real Estate	$ 662
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Landover Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 753
Land	753
Total Investment in Real Estate	$ 753
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Landover Hills One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 457
Land	457
Total Investment in Real Estate	$ 457
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Landover Hills Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,358
Land	1,358
Total Investment in Real Estate	$ 1,358
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Lanham One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 822
Land	822
Total Investment in Real Estate	$ 822
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Laurel One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 696
Land	696
Total Investment in Real Estate	$ 696
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Laurel Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,210
Land	1,210
Total Investment in Real Estate	$ 1,210
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Laurel Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,267
Land	1,267
Total Investment in Real Estate	$ 1,267
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Laurel Four [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,415
Land	1,415
Total Investment in Real Estate	$ 1,415
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Laurel Five [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,530
Land	1,530
Total Investment in Real Estate	$ 1,530
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Laurel Six [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,523
Land	2,523
Total Investment in Real Estate	$ 2,523
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Oxon Hill One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,256
Land	1,256
Total Investment in Real Estate	$ 1,256
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Riverdale One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 582
Land	582
Total Investment in Real Estate	$ 582
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Riverdale Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 788
Land	788
Total Investment in Real Estate	$ 788
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Seat Pleasant One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 468
Land	468
Total Investment in Real Estate	$ 468
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Suitland One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 377
Land	377
Total Investment in Real Estate	$ 377
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Suitland Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 673
Land	673
Total Investment in Real Estate	$ 673
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Temple Hills One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 331
Land	331
Total Investment in Real Estate	$ 331
Date of Initial Leasehold or Acquisition Investment	2,009
MARYLAND | Accumulated Depreciation And Amortization Description [Member] | Upper Marlboro One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 845
Land	845
Total Investment in Real Estate	$ 845
Date of Initial Leasehold or Acquisition Investment	2,009
MAINE | Accumulated Depreciation And Amortization Description [Member] | Biddeford One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 618
Cost Capitalized Subsequent to Initial Investment	8
Land	235
Building and Improvements	391
Total Investment in Real Estate	626
Accumulated Depreciation and Amortization	$ 391
Date of Initial Leasehold or Acquisition Investment	1,985
MAINE | Accumulated Depreciation And Amortization Description [Member] | Lewiston One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 342
Cost Capitalized Subsequent to Initial Investment	188
Land	222
Building and Improvements	308
Total Investment in Real Estate	530
Accumulated Depreciation and Amortization	$ 200
Date of Initial Leasehold or Acquisition Investment	1,985
NORTH CAROLINA | Accumulated Depreciation And Amortization Description [Member] | Kernersville One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 449
Land	338
Building and Improvements	111
Total Investment in Real Estate	449
Accumulated Depreciation and Amortization	$ 102
Date of Initial Leasehold or Acquisition Investment	2,007
NORTH CAROLINA | Accumulated Depreciation And Amortization Description [Member] | Madison One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 396
Land	46
Building and Improvements	350
Total Investment in Real Estate	396
Accumulated Depreciation and Amortization	$ 185
Date of Initial Leasehold or Acquisition Investment	2,007

Schedule III - Real Estate an77

Schedule III - Real Estate and Accumulated Depreciation and Amortization Part 13 (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule Of Investments In Real Estate [Line Items]
Total Investment in Real Estate	$ 782,166	$ 783,233	$ 595,959	$ 570,275
Accumulated Depreciation And Amortization Description [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	720,099
Cost Capitalized Subsequent to Initial Investment	62,067
Land	474,232
Building and Improvements	307,934
Total Investment in Real Estate	782,166
Accumulated Depreciation and Amortization	120,576
NORTH CAROLINA | Accumulated Depreciation And Amortization Description [Member] | New Bern One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	350
Cost Capitalized Subsequent to Initial Investment	83
Land	190
Building and Improvements	243
Total Investment in Real Estate	433
Accumulated Depreciation and Amortization	$ 143
Date of Initial Leasehold or Acquisition Investment	2,007
NORTH DAKOTA | Accumulated Depreciation And Amortization Description [Member] | Belfield One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,232
Land	382
Building and Improvements	850
Total Investment in Real Estate	1,232
Accumulated Depreciation and Amortization	$ 727
Date of Initial Leasehold or Acquisition Investment	2,007
NEW HAMPSHIRE | Accumulated Depreciation And Amortization Description [Member] | Allenstown One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,787
Land	467
Building and Improvements	1,320
Total Investment in Real Estate	1,787
Accumulated Depreciation and Amortization	$ 670
Date of Initial Leasehold or Acquisition Investment	2,007
NEW HAMPSHIRE | Accumulated Depreciation And Amortization Description [Member] | Concord One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 675
Land	675
Total Investment in Real Estate	$ 675
Date of Initial Leasehold or Acquisition Investment	2,011
NEW HAMPSHIRE | Accumulated Depreciation And Amortization Description [Member] | Concord Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 900
Land	900
Total Investment in Real Estate	$ 900
Date of Initial Leasehold or Acquisition Investment	2,011
NEW HAMPSHIRE | Accumulated Depreciation And Amortization Description [Member] | Derry One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 418
Cost Capitalized Subsequent to Initial Investment	17
Land	158
Building and Improvements	277
Total Investment in Real Estate	435
Accumulated Depreciation and Amortization	$ 275
Date of Initial Leasehold or Acquisition Investment	1,987
NEW HAMPSHIRE | Accumulated Depreciation And Amortization Description [Member] | Derry Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 950
Land	950
Total Investment in Real Estate	$ 950
Date of Initial Leasehold or Acquisition Investment	2,011
NEW HAMPSHIRE | Accumulated Depreciation And Amortization Description [Member] | Dover One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 650
Land	650
Total Investment in Real Estate	$ 650
Date of Initial Leasehold or Acquisition Investment	2,011
NEW HAMPSHIRE | Accumulated Depreciation And Amortization Description [Member] | Dover Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,200
Land	1,200
Total Investment in Real Estate	$ 1,200
Date of Initial Leasehold or Acquisition Investment	2,011
NEW HAMPSHIRE | Accumulated Depreciation And Amortization Description [Member] | Goffstown One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,737
Land	697
Building and Improvements	1,040
Total Investment in Real Estate	1,737
Accumulated Depreciation and Amortization	$ 327
Date of Initial Leasehold or Acquisition Investment	2,012
NEW HAMPSHIRE | Accumulated Depreciation And Amortization Description [Member] | Hooksett One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,562
Land	824
Building and Improvements	738
Total Investment in Real Estate	1,562
Accumulated Depreciation and Amortization	$ 651
Date of Initial Leasehold or Acquisition Investment	2,007
NEW HAMPSHIRE | Accumulated Depreciation And Amortization Description [Member] | Kingston One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,500
Land	1,500
Total Investment in Real Estate	$ 1,500
Date of Initial Leasehold or Acquisition Investment	2,011
NEW HAMPSHIRE | Accumulated Depreciation And Amortization Description [Member] | Londonderry One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 703
Cost Capitalized Subsequent to Initial Investment	30
Land	458
Building and Improvements	275
Total Investment in Real Estate	733
Accumulated Depreciation and Amortization	$ 216
Date of Initial Leasehold or Acquisition Investment	1,985
NEW HAMPSHIRE | Accumulated Depreciation And Amortization Description [Member] | Londonderry Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,100
Land	1,100
Total Investment in Real Estate	$ 1,100
Date of Initial Leasehold or Acquisition Investment	2,011
NEW HAMPSHIRE | Accumulated Depreciation And Amortization Description [Member] | Manchester One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 550
Land	550
Total Investment in Real Estate	$ 550
Date of Initial Leasehold or Acquisition Investment	2,011
NEW HAMPSHIRE | Accumulated Depreciation And Amortization Description [Member] | Milford One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 190
Cost Capitalized Subsequent to Initial Investment	147
Land	115
Building and Improvements	222
Total Investment in Real Estate	337
Accumulated Depreciation and Amortization	$ 138
Date of Initial Leasehold or Acquisition Investment	1,986
NEW HAMPSHIRE | Accumulated Depreciation And Amortization Description [Member] | Nashua One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 500
Land	500
Total Investment in Real Estate	$ 500
Date of Initial Leasehold or Acquisition Investment	2,011
NEW HAMPSHIRE | Accumulated Depreciation And Amortization Description [Member] | Nashua Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 550
Land	550
Total Investment in Real Estate	$ 550
Date of Initial Leasehold or Acquisition Investment	2,011
NEW HAMPSHIRE | Accumulated Depreciation And Amortization Description [Member] | Nashua Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 750
Land	750
Total Investment in Real Estate	$ 750
Date of Initial Leasehold or Acquisition Investment	2,011
NEW HAMPSHIRE | Accumulated Depreciation And Amortization Description [Member] | Nashua Four [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 825
Land	825
Total Investment in Real Estate	$ 825
Date of Initial Leasehold or Acquisition Investment	2,011
NEW HAMPSHIRE | Accumulated Depreciation And Amortization Description [Member] | Nashua Five [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,750
Land	1,750
Total Investment in Real Estate	$ 1,750
Date of Initial Leasehold or Acquisition Investment	2,011
NEW HAMPSHIRE | Accumulated Depreciation And Amortization Description [Member] | Northwood One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 500
Land	500
Total Investment in Real Estate	$ 500
Date of Initial Leasehold or Acquisition Investment	2,011
NEW HAMPSHIRE | Accumulated Depreciation And Amortization Description [Member] | Pelham One [Member]
Schedule Of Investments In Real Estate [Line Items]
Cost Capitalized Subsequent to Initial Investment	$ 730
Land	317
Building and Improvements	413
Total Investment in Real Estate	730
Accumulated Depreciation and Amortization	$ 69
Date of Initial Leasehold or Acquisition Investment	1,996
NEW HAMPSHIRE | Accumulated Depreciation And Amortization Description [Member] | Plaistow One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 300
Cost Capitalized Subsequent to Initial Investment	101
Land	245
Building and Improvements	156
Total Investment in Real Estate	401
Accumulated Depreciation and Amortization	$ 155
Date of Initial Leasehold or Acquisition Investment	1,987
NEW HAMPSHIRE | Accumulated Depreciation And Amortization Description [Member] | Portsmouth One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 525
Land	525
Total Investment in Real Estate	$ 525
Date of Initial Leasehold or Acquisition Investment	2,011
NEW HAMPSHIRE | Accumulated Depreciation And Amortization Description [Member] | Raymond One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 550
Land	550
Total Investment in Real Estate	$ 550
Date of Initial Leasehold or Acquisition Investment	2,011
NEW HAMPSHIRE | Accumulated Depreciation And Amortization Description [Member] | Rochester One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 700
Land	700
Total Investment in Real Estate	$ 700
Date of Initial Leasehold or Acquisition Investment	2,011
NEW HAMPSHIRE | Accumulated Depreciation And Amortization Description [Member] | Rochester Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 939
Cost Capitalized Subsequent to Initial Investment	12
Land	600
Building and Improvements	351
Total Investment in Real Estate	951
Accumulated Depreciation and Amortization	$ 269
Date of Initial Leasehold or Acquisition Investment	1,985
NEW HAMPSHIRE | Accumulated Depreciation And Amortization Description [Member] | Rochester Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,400
Land	1,400
Total Investment in Real Estate	$ 1,400
Date of Initial Leasehold or Acquisition Investment	2,011
NEW HAMPSHIRE | Accumulated Depreciation And Amortization Description [Member] | Rochester Four [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,600
Land	1,600
Total Investment in Real Estate	$ 1,600
Date of Initial Leasehold or Acquisition Investment	2,011

Schedule III - Real Estate an78

Schedule III - Real Estate and Accumulated Depreciation and Amortization Part 14 (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule Of Investments In Real Estate [Line Items]
Total Investment in Real Estate	$ 782,166	$ 783,233	$ 595,959	$ 570,275
Accumulated Depreciation And Amortization Description [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	720,099
Cost Capitalized Subsequent to Initial Investment	62,067
Land	474,232
Building and Improvements	307,934
Total Investment in Real Estate	782,166
Accumulated Depreciation and Amortization	120,576
NEW HAMPSHIRE | Accumulated Depreciation And Amortization Description [Member] | Salem One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	744
Cost Capitalized Subsequent to Initial Investment	18
Land	484
Building and Improvements	278
Total Investment in Real Estate	762
Accumulated Depreciation and Amortization	$ 215
Date of Initial Leasehold or Acquisition Investment	1,985
NEW HAMPSHIRE | Accumulated Depreciation And Amortization Description [Member] | Salem Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 450
Cost Capitalized Subsequent to Initial Investment	880
Land	350
Building and Improvements	980
Total Investment in Real Estate	1,330
Accumulated Depreciation and Amortization	$ 43
Date of Initial Leasehold or Acquisition Investment	1,986
NEW HAMPSHIRE | Accumulated Depreciation And Amortization Description [Member] | Rochester One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 700
Land	700
Total Investment in Real Estate	$ 700
Date of Initial Leasehold or Acquisition Investment	2,011
NJ | Accumulated Depreciation And Amortization Description [Member] | Basking Ridge One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 362
Cost Capitalized Subsequent to Initial Investment	287
Land	200
Building and Improvements	449
Total Investment in Real Estate	649
Accumulated Depreciation and Amortization	$ 221
Date of Initial Leasehold or Acquisition Investment	1,986
NJ | Accumulated Depreciation And Amortization Description [Member] | Bergenfield One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 382
Cost Capitalized Subsequent to Initial Investment	331
Land	300
Building and Improvements	413
Total Investment in Real Estate	713
Accumulated Depreciation and Amortization	$ 166
Date of Initial Leasehold or Acquisition Investment	1,990
NJ | Accumulated Depreciation And Amortization Description [Member] | Brick One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,508
Cost Capitalized Subsequent to Initial Investment	229
Land	1,000
Building and Improvements	737
Total Investment in Real Estate	1,737
Accumulated Depreciation and Amortization	$ 432
Date of Initial Leasehold or Acquisition Investment	2,000
NJ | Accumulated Depreciation And Amortization Description [Member] | Colonia One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 720
Cost Capitalized Subsequent to Initial Investment	(297)
Land	72
Building and Improvements	351
Total Investment in Real Estate	423
Accumulated Depreciation and Amortization	$ 264
Date of Initial Leasehold or Acquisition Investment	1,985
NJ | Accumulated Depreciation And Amortization Description [Member] | Elizabeth One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 406
Cost Capitalized Subsequent to Initial Investment	62
Land	227
Building and Improvements	241
Total Investment in Real Estate	468
Accumulated Depreciation and Amortization	$ 149
Date of Initial Leasehold or Acquisition Investment	1,985
NJ | Accumulated Depreciation And Amortization Description [Member] | Flemington One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 708
Cost Capitalized Subsequent to Initial Investment	(251)
Land	168
Building and Improvements	289
Total Investment in Real Estate	457
Accumulated Depreciation and Amortization	$ 62
Date of Initial Leasehold or Acquisition Investment	1,985
NJ | Accumulated Depreciation And Amortization Description [Member] | Flemington Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 547
Cost Capitalized Subsequent to Initial Investment	17
Land	346
Building and Improvements	218
Total Investment in Real Estate	564
Accumulated Depreciation and Amortization	$ 169
Date of Initial Leasehold or Acquisition Investment	1,985
NJ | Accumulated Depreciation And Amortization Description [Member] | Fort Lee One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,246
Cost Capitalized Subsequent to Initial Investment	362
Land	811
Building and Improvements	797
Total Investment in Real Estate	1,608
Accumulated Depreciation and Amortization	$ 439
Date of Initial Leasehold or Acquisition Investment	1,985
NJ | Accumulated Depreciation And Amortization Description [Member] | Franklin Twp One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 683
Cost Capitalized Subsequent to Initial Investment	195
Land	445
Building and Improvements	433
Total Investment in Real Estate	878
Accumulated Depreciation and Amortization	$ 305
Date of Initial Leasehold or Acquisition Investment	1,985
NJ | Accumulated Depreciation And Amortization Description [Member] | Freehold One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 494
Cost Capitalized Subsequent to Initial Investment	370
Land	95
Building and Improvements	769
Total Investment in Real Estate	864
Accumulated Depreciation and Amortization	$ 121
Date of Initial Leasehold or Acquisition Investment	1,978
NJ | Accumulated Depreciation And Amortization Description [Member] | Green Village [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 277
Cost Capitalized Subsequent to Initial Investment	76
Land	128
Building and Improvements	225
Total Investment in Real Estate	353
Accumulated Depreciation and Amortization	$ 191
Date of Initial Leasehold or Acquisition Investment	1,985
NJ | Accumulated Depreciation And Amortization Description [Member] | Hasbrouck Heights One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 641
Cost Capitalized Subsequent to Initial Investment	440
Land	416
Building and Improvements	665
Total Investment in Real Estate	1,081
Accumulated Depreciation and Amortization	$ 350
Date of Initial Leasehold or Acquisition Investment	1,985
NJ | Accumulated Depreciation And Amortization Description [Member] | Hillsborough One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 237
Cost Capitalized Subsequent to Initial Investment	487
Land	100
Building and Improvements	624
Total Investment in Real Estate	724
Accumulated Depreciation and Amortization	$ 251
Date of Initial Leasehold or Acquisition Investment	1,985
NJ | Accumulated Depreciation And Amortization Description [Member] | Irvington [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 411
Cost Capitalized Subsequent to Initial Investment	(34)
Land	98
Building and Improvements	279
Total Investment in Real Estate	377
Accumulated Depreciation and Amortization	$ 31
Date of Initial Leasehold or Acquisition Investment	1,985
NJ | Accumulated Depreciation And Amortization Description [Member] | Lake Hopatcong One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,305
Land	800
Building and Improvements	505
Total Investment in Real Estate	1,305
Accumulated Depreciation and Amortization	$ 412
Date of Initial Leasehold or Acquisition Investment	2,000
NJ | Accumulated Depreciation And Amortization Description [Member] | Livingston One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 871
Cost Capitalized Subsequent to Initial Investment	294
Land	568
Building and Improvements	597
Total Investment in Real Estate	1,165
Accumulated Depreciation and Amortization	$ 314
Date of Initial Leasehold or Acquisition Investment	1,985
NJ | Accumulated Depreciation And Amortization Description [Member] | Long Branch One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 514
Cost Capitalized Subsequent to Initial Investment	437
Land	335
Building and Improvements	616
Total Investment in Real Estate	951
Accumulated Depreciation and Amortization	$ 228
Date of Initial Leasehold or Acquisition Investment	1,985
NJ | Accumulated Depreciation And Amortization Description [Member] | Mcafee One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 672
Cost Capitalized Subsequent to Initial Investment	268
Land	437
Building and Improvements	503
Total Investment in Real Estate	940
Accumulated Depreciation and Amortization	$ 240
Date of Initial Leasehold or Acquisition Investment	1,985
NJ | Accumulated Depreciation And Amortization Description [Member] | Midland Park One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 200
Cost Capitalized Subsequent to Initial Investment	333
Land	150
Building and Improvements	383
Total Investment in Real Estate	533
Accumulated Depreciation and Amortization	$ 181
Date of Initial Leasehold or Acquisition Investment	1,989
NJ | Accumulated Depreciation And Amortization Description [Member] | Mountainside One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 665
Cost Capitalized Subsequent to Initial Investment	(172)
Land	134
Building and Improvements	359
Total Investment in Real Estate	493
Accumulated Depreciation and Amortization	$ 84
Date of Initial Leasehold or Acquisition Investment	1,985
NJ | Accumulated Depreciation And Amortization Description [Member] | North Bergen One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 630
Cost Capitalized Subsequent to Initial Investment	151
Land	410
Building and Improvements	371
Total Investment in Real Estate	781
Accumulated Depreciation and Amortization	$ 265
Date of Initial Leasehold or Acquisition Investment	1,985
NJ | Accumulated Depreciation And Amortization Description [Member] | North Plainfield One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 227
Cost Capitalized Subsequent to Initial Investment	576
Land	175
Building and Improvements	628
Total Investment in Real Estate	803
Accumulated Depreciation and Amortization	$ 386
Date of Initial Leasehold or Acquisition Investment	1,978
NJ | Accumulated Depreciation And Amortization Description [Member] | Nutley One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 434
Cost Capitalized Subsequent to Initial Investment	199
Land	283
Building and Improvements	350
Total Investment in Real Estate	633
Accumulated Depreciation and Amortization	$ 194
Date of Initial Leasehold or Acquisition Investment	1,985
NJ | Accumulated Depreciation And Amortization Description [Member] | Paramus One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 382
Cost Capitalized Subsequent to Initial Investment	68
Land	249
Building and Improvements	201
Total Investment in Real Estate	450
Accumulated Depreciation and Amortization	$ 131
Date of Initial Leasehold or Acquisition Investment	1,985
NJ | Accumulated Depreciation And Amortization Description [Member] | Parlin One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 418
Cost Capitalized Subsequent to Initial Investment	157
Land	203
Building and Improvements	372
Total Investment in Real Estate	575
Accumulated Depreciation and Amortization	$ 84
Date of Initial Leasehold or Acquisition Investment	1,985
NJ | Accumulated Depreciation And Amortization Description [Member] | Paterson One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 620
Cost Capitalized Subsequent to Initial Investment	16
Land	403
Building and Improvements	233
Total Investment in Real Estate	636
Accumulated Depreciation and Amortization	$ 181
Date of Initial Leasehold or Acquisition Investment	1,985
NJ | Accumulated Depreciation And Amortization Description [Member] | Ridgefield Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 55
Cost Capitalized Subsequent to Initial Investment	280
Land	33
Building and Improvements	302
Total Investment in Real Estate	335
Accumulated Depreciation and Amortization	$ 112
Date of Initial Leasehold or Acquisition Investment	1,980
NJ | Accumulated Depreciation And Amortization Description [Member] | Ridgewood One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 703
Cost Capitalized Subsequent to Initial Investment	386
Land	458
Building and Improvements	631
Total Investment in Real Estate	1,089
Accumulated Depreciation and Amortization	$ 304
Date of Initial Leasehold or Acquisition Investment	1,985
NJ | Accumulated Depreciation And Amortization Description [Member] | Somerville [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 253
Cost Capitalized Subsequent to Initial Investment	124
Land	201
Building and Improvements	176
Total Investment in Real Estate	377
Accumulated Depreciation and Amortization	$ 84
Date of Initial Leasehold or Acquisition Investment	1,987
NJ | Accumulated Depreciation And Amortization Description [Member] | Trenton One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,303
Land	1,146
Building and Improvements	157
Total Investment in Real Estate	1,303
Accumulated Depreciation and Amortization	$ 39
Date of Initial Leasehold or Acquisition Investment	2,012
NJ | Accumulated Depreciation And Amortization Description [Member] | Union One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 437
Cost Capitalized Subsequent to Initial Investment	316
Land	239
Building and Improvements	514
Total Investment in Real Estate	753
Accumulated Depreciation and Amortization	$ 103
Date of Initial Leasehold or Acquisition Investment	1,985
NJ | Accumulated Depreciation And Amortization Description [Member] | Washington Township One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 912
Cost Capitalized Subsequent to Initial Investment	287
Land	594
Building and Improvements	605
Total Investment in Real Estate	1,199
Accumulated Depreciation and Amortization	$ 318
Date of Initial Leasehold or Acquisition Investment	1,985
NJ | Accumulated Depreciation And Amortization Description [Member] | Watchung One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 449
Cost Capitalized Subsequent to Initial Investment	130
Land	226
Building and Improvements	353
Total Investment in Real Estate	579
Accumulated Depreciation and Amortization	$ 71
Date of Initial Leasehold or Acquisition Investment	1,985
NJ | Accumulated Depreciation And Amortization Description [Member] | West Orange One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 800
Cost Capitalized Subsequent to Initial Investment	412
Land	521
Building and Improvements	691
Total Investment in Real Estate	1,212
Accumulated Depreciation and Amortization	$ 380
Date of Initial Leasehold or Acquisition Investment	1,985
NEVADA | Accumulated Depreciation And Amortization Description [Member] | Fernley One Member
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,665
Land	221
Building and Improvements	1,444
Total Investment in Real Estate	1,665
Accumulated Depreciation and Amortization	$ 162
Date of Initial Leasehold or Acquisition Investment	2,015
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Naples One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,257
Land	827
Building and Improvements	430
Total Investment in Real Estate	1,257
Accumulated Depreciation and Amortization	$ 186
Date of Initial Leasehold or Acquisition Investment	2,006
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Perry One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,444
Land	1,044
Building and Improvements	400
Total Investment in Real Estate	1,444
Accumulated Depreciation and Amortization	$ 173
Date of Initial Leasehold or Acquisition Investment	2,006
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Prattsburg One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 553
Land	303
Building and Improvements	250
Total Investment in Real Estate	553
Accumulated Depreciation and Amortization	$ 108
Date of Initial Leasehold or Acquisition Investment	2,006
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Rochester One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 853
Land	303
Building and Improvements	550
Total Investment in Real Estate	853
Accumulated Depreciation and Amortization	$ 238
Date of Initial Leasehold or Acquisition Investment	2,006
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Alfred Station One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 714
Land	414
Building and Improvements	300
Total Investment in Real Estate	714
Accumulated Depreciation and Amortization	$ 130
Date of Initial Leasehold or Acquisition Investment	2,006
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Amherst One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 222
Cost Capitalized Subsequent to Initial Investment	247
Land	173
Building and Improvements	296
Total Investment in Real Estate	469
Accumulated Depreciation and Amortization	$ 90
Date of Initial Leasehold or Acquisition Investment	2,000
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Astoria One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,684
Land	1,105
Building and Improvements	579
Total Investment in Real Estate	1,684
Accumulated Depreciation and Amortization	$ 122
Date of Initial Leasehold or Acquisition Investment	2,013
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Avoca One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 936
Cost Capitalized Subsequent to Initial Investment	(1)
Land	635
Building and Improvements	300
Total Investment in Real Estate	935
Accumulated Depreciation and Amortization	$ 130
Date of Initial Leasehold or Acquisition Investment	2,006
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Batavia One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 684
Land	364
Building and Improvements	320
Total Investment in Real Estate	684
Accumulated Depreciation and Amortization	$ 139
Date of Initial Leasehold or Acquisition Investment	2,006
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Bay Shore One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 156
Cost Capitalized Subsequent to Initial Investment	356
Land	86
Building and Improvements	426
Total Investment in Real Estate	512
Accumulated Depreciation and Amortization	$ 240
Date of Initial Leasehold or Acquisition Investment	1,981
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Bayside One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 470
Cost Capitalized Subsequent to Initial Investment	261
Land	306
Building and Improvements	425
Total Investment in Real Estate	731
Accumulated Depreciation and Amortization	$ 171
Date of Initial Leasehold or Acquisition Investment	1,985

Schedule III - Real Estate an79

Schedule III - Real Estate and Accumulated Depreciation and Amortization Part 15 (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule Of Investments In Real Estate [Line Items]
Total Investment in Real Estate	$ 782,166	$ 783,233	$ 595,959	$ 570,275
Accumulated Depreciation And Amortization Description [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	720,099
Cost Capitalized Subsequent to Initial Investment	62,067
Land	474,232
Building and Improvements	307,934
Total Investment in Real Estate	782,166
Accumulated Depreciation and Amortization	120,576
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Bellaire One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	330
Cost Capitalized Subsequent to Initial Investment	37
Land	215
Building and Improvements	152
Total Investment in Real Estate	367
Accumulated Depreciation and Amortization	$ 125
Date of Initial Leasehold or Acquisition Investment	1,985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Brewster One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 789
Land	789
Total Investment in Real Estate	$ 789
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Briarcliff Manor One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 652
Cost Capitalized Subsequent to Initial Investment	606
Land	502
Building and Improvements	756
Total Investment in Real Estate	1,258
Accumulated Depreciation and Amortization	$ 418
Date of Initial Leasehold or Acquisition Investment	1,976
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Bronx One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 104
Cost Capitalized Subsequent to Initial Investment	226
Land	90
Building and Improvements	240
Total Investment in Real Estate	330
Accumulated Depreciation and Amortization	$ 233
Date of Initial Leasehold or Acquisition Investment	1,985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Bronx Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 423
Land	423
Total Investment in Real Estate	$ 423
Date of Initial Leasehold or Acquisition Investment	2,013
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Bronx Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 391
Cost Capitalized Subsequent to Initial Investment	53
Land	251
Building and Improvements	193
Total Investment in Real Estate	444
Accumulated Depreciation and Amortization	$ 160
Date of Initial Leasehold or Acquisition Investment	1,985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Bronx Four [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 877
Land	877
Total Investment in Real Estate	$ 877
Date of Initial Leasehold or Acquisition Investment	2,013
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Bronx Five [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 884
Land	884
Total Investment in Real Estate	$ 884
Date of Initial Leasehold or Acquisition Investment	2,013
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Bronx Six [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 953
Land	953
Total Investment in Real Estate	$ 953
Date of Initial Leasehold or Acquisition Investment	2,013
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Bronx Seven [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,049
Land	485
Building and Improvements	564
Total Investment in Real Estate	1,049
Accumulated Depreciation and Amortization	$ 119
Date of Initial Leasehold or Acquisition Investment	2,013
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Bronx Eight [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,910
Land	1,349
Building and Improvements	561
Total Investment in Real Estate	1,910
Accumulated Depreciation and Amortization	$ 124
Date of Initial Leasehold or Acquisition Investment	2,013
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Bronx Nine [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,408
Land	1,712
Building and Improvements	696
Total Investment in Real Estate	2,408
Accumulated Depreciation and Amortization	$ 138
Date of Initial Leasehold or Acquisition Investment	2,013
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Bronxville One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,232
Land	1,232
Total Investment in Real Estate	$ 1,232
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Brooklyn One [Member]
Schedule Of Investments In Real Estate [Line Items]
Cost Capitalized Subsequent to Initial Investment	$ 396
Building and Improvements	396
Total Investment in Real Estate	396
Accumulated Depreciation and Amortization	$ 195
Date of Initial Leasehold or Acquisition Investment	1,970
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Brooklyn Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 100
Cost Capitalized Subsequent to Initial Investment	345
Land	67
Building and Improvements	378
Total Investment in Real Estate	445
Accumulated Depreciation and Amortization	$ 177
Date of Initial Leasehold or Acquisition Investment	1,972
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Brooklyn Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 75
Cost Capitalized Subsequent to Initial Investment	384
Land	31
Building and Improvements	428
Total Investment in Real Estate	459
Accumulated Depreciation and Amortization	$ 210
Date of Initial Leasehold or Acquisition Investment	1,967
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Brooklyn Four [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 148
Cost Capitalized Subsequent to Initial Investment	394
Land	104
Building and Improvements	438
Total Investment in Real Estate	542
Accumulated Depreciation and Amortization	$ 238
Date of Initial Leasehold or Acquisition Investment	1,972
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Brooklyn Five [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 237
Cost Capitalized Subsequent to Initial Investment	382
Land	154
Building and Improvements	465
Total Investment in Real Estate	619
Accumulated Depreciation and Amortization	$ 156
Date of Initial Leasehold or Acquisition Investment	1,985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Brooklyn Six [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 282
Cost Capitalized Subsequent to Initial Investment	457
Land	176
Building and Improvements	563
Total Investment in Real Estate	739
Accumulated Depreciation and Amortization	$ 362
Date of Initial Leasehold or Acquisition Investment	1,967
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Brooklyn Seven [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 422
Cost Capitalized Subsequent to Initial Investment	334
Land	275
Building and Improvements	481
Total Investment in Real Estate	756
Accumulated Depreciation and Amortization	$ 249
Date of Initial Leasehold or Acquisition Investment	1,985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Brooklyn Eight [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 478
Cost Capitalized Subsequent to Initial Investment	318
Land	306
Building and Improvements	490
Total Investment in Real Estate	796
Accumulated Depreciation and Amortization	$ 254
Date of Initial Leasehold or Acquisition Investment	1,985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Brooklyn Nine [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 627
Cost Capitalized Subsequent to Initial Investment	313
Land	408
Building and Improvements	532
Total Investment in Real Estate	940
Accumulated Depreciation and Amortization	$ 273
Date of Initial Leasehold or Acquisition Investment	1,985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Buffalo One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 312
Cost Capitalized Subsequent to Initial Investment	242
Land	151
Building and Improvements	403
Total Investment in Real Estate	554
Accumulated Depreciation and Amortization	$ 168
Date of Initial Leasehold or Acquisition Investment	2,000
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Byron One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 969
Land	669
Building and Improvements	300
Total Investment in Real Estate	969
Accumulated Depreciation and Amortization	$ 130
Date of Initial Leasehold or Acquisition Investment	2,006
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Chester One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,158
Land	1,158
Total Investment in Real Estate	$ 1,158
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Churchville One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,011
Land	601
Building and Improvements	410
Total Investment in Real Estate	1,011
Accumulated Depreciation and Amortization	$ 178
Date of Initial Leasehold or Acquisition Investment	2,006
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Commack One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 321
Cost Capitalized Subsequent to Initial Investment	26
Land	209
Building and Improvements	138
Total Investment in Real Estate	347
Accumulated Depreciation and Amortization	$ 110
Date of Initial Leasehold or Acquisition Investment	1,985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Corona One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 114
Cost Capitalized Subsequent to Initial Investment	301
Land	113
Building and Improvements	302
Total Investment in Real Estate	415
Accumulated Depreciation and Amortization	$ 302
Date of Initial Leasehold or Acquisition Investment	1,965
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Corona Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,543
Land	1,903
Building and Improvements	640
Total Investment in Real Estate	2,543
Accumulated Depreciation and Amortization	$ 129
Date of Initial Leasehold or Acquisition Investment	2,013
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Cortland Manor One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,872
Land	1,872
Total Investment in Real Estate	$ 1,872
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Dobbs Ferry One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 670
Cost Capitalized Subsequent to Initial Investment	34
Land	434
Building and Improvements	270
Total Investment in Real Estate	704
Accumulated Depreciation and Amortization	$ 213
Date of Initial Leasehold or Acquisition Investment	1,985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Dobbs FerryTwo [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,345
Land	1,345
Total Investment in Real Estate	$ 1,345
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | East Hampton One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 660
Cost Capitalized Subsequent to Initial Investment	39
Land	428
Building and Improvements	271
Total Investment in Real Estate	699
Accumulated Depreciation and Amortization	$ 214
Date of Initial Leasehold or Acquisition Investment	1,985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | East Islip One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 89
Cost Capitalized Subsequent to Initial Investment	549
Land	87
Building and Improvements	551
Total Investment in Real Estate	638
Accumulated Depreciation and Amortization	$ 259
Date of Initial Leasehold or Acquisition Investment	1,972
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | East Pembroke One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 787
Land	537
Building and Improvements	250
Total Investment in Real Estate	787
Accumulated Depreciation and Amortization	$ 108
Date of Initial Leasehold or Acquisition Investment	2,006
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Eastchester One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,724
Land	1,724
Total Investment in Real Estate	$ 1,724
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Elmont One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 389
Cost Capitalized Subsequent to Initial Investment	319
Land	231
Building and Improvements	477
Total Investment in Real Estate	708
Accumulated Depreciation and Amortization	$ 286
Date of Initial Leasehold or Acquisition Investment	1,978
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Elmsford One [Member]
Schedule Of Investments In Real Estate [Line Items]
Cost Capitalized Subsequent to Initial Investment	$ 1,012
Land	581
Building and Improvements	431
Total Investment in Real Estate	1,012
Accumulated Depreciation and Amortization	$ 196
Date of Initial Leasehold or Acquisition Investment	1,971
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Elmsford Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,453
Land	1,453
Total Investment in Real Estate	$ 1,453
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Fishkill One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,793
Land	1,793
Total Investment in Real Estate	$ 1,793
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Floral Park One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 617
Cost Capitalized Subsequent to Initial Investment	175
Land	356
Building and Improvements	436
Total Investment in Real Estate	792
Accumulated Depreciation and Amortization	$ 219
Date of Initial Leasehold or Acquisition Investment	1,998
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Flushing One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 516
Cost Capitalized Subsequent to Initial Investment	241
Land	320
Building and Improvements	437
Total Investment in Real Estate	757
Accumulated Depreciation and Amortization	$ 193
Date of Initial Leasehold or Acquisition Investment	1,998
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Flushing Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,936
Land	1,413
Building and Improvements	523
Total Investment in Real Estate	1,936
Accumulated Depreciation and Amortization	$ 110
Date of Initial Leasehold or Acquisition Investment	2,013
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Flushing Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,947
Land	1,405
Building and Improvements	542
Total Investment in Real Estate	1,947
Accumulated Depreciation and Amortization	$ 105
Date of Initial Leasehold or Acquisition Investment	2,013
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Flushing Four [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,478
Land	1,801
Building and Improvements	677
Total Investment in Real Estate	2,478
Accumulated Depreciation and Amortization	$ 131
Date of Initial Leasehold or Acquisition Investment	2,013
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Forrest Hill One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,273
Land	1,273
Total Investment in Real Estate	$ 1,273
Date of Initial Leasehold or Acquisition Investment	2,013
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Franklin Square One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 153
Cost Capitalized Subsequent to Initial Investment	331
Land	137
Building and Improvements	347
Total Investment in Real Estate	484
Accumulated Depreciation and Amortization	$ 146
Date of Initial Leasehold or Acquisition Investment	1,978
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Friendship One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 393
Land	43
Building and Improvements	350
Total Investment in Real Estate	393
Accumulated Depreciation and Amortization	$ 152
Date of Initial Leasehold or Acquisition Investment	2,006

Schedule III - Real Estate an80

Schedule III - Real Estate and Accumulated Depreciation and Amortization Part 16 (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule Of Investments In Real Estate [Line Items]
Total Investment in Real Estate	$ 782,166	$ 783,233	$ 595,959	$ 570,275
Accumulated Depreciation And Amortization Description [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	720,099
Cost Capitalized Subsequent to Initial Investment	62,067
Land	474,232
Building and Improvements	307,934
Total Investment in Real Estate	782,166
Accumulated Depreciation and Amortization	120,576
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Garden City One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	361
Cost Capitalized Subsequent to Initial Investment	243
Land	236
Building and Improvements	368
Total Investment in Real Estate	604
Accumulated Depreciation and Amortization	$ 155
Date of Initial Leasehold or Acquisition Investment	1,985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Garnerville One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,508
Land	1,508
Total Investment in Real Estate	$ 1,508
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Glen Head One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 234
Cost Capitalized Subsequent to Initial Investment	219
Land	103
Building and Improvements	350
Total Investment in Real Estate	453
Accumulated Depreciation and Amortization	$ 347
Date of Initial Leasehold or Acquisition Investment	1,982
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Glen HeadTwo [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 461
Cost Capitalized Subsequent to Initial Investment	284
Land	301
Building and Improvements	444
Total Investment in Real Estate	745
Accumulated Depreciation and Amortization	$ 215
Date of Initial Leasehold or Acquisition Investment	1,985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Glendale [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 369
Cost Capitalized Subsequent to Initial Investment	280
Land	236
Building and Improvements	413
Total Investment in Real Estate	649
Accumulated Depreciation and Amortization	$ 186
Date of Initial Leasehold or Acquisition Investment	1,985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Great Neck One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 500
Cost Capitalized Subsequent to Initial Investment	252
Land	450
Building and Improvements	302
Total Investment in Real Estate	752
Accumulated Depreciation and Amortization	$ 120
Date of Initial Leasehold or Acquisition Investment	1,985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Greigsville One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,018
Land	203
Building and Improvements	815
Total Investment in Real Estate	1,018
Accumulated Depreciation and Amortization	$ 449
Date of Initial Leasehold or Acquisition Investment	2,008
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Hartsdale One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,626
Land	1,626
Total Investment in Real Estate	$ 1,626
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Hawthorne One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,084
Land	2,084
Total Investment in Real Estate	$ 2,084
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Hopewell Junction One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,163
Land	1,163
Total Investment in Real Estate	$ 1,163
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Huntington Station One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 141
Cost Capitalized Subsequent to Initial Investment	284
Land	84
Building and Improvements	341
Total Investment in Real Estate	425
Accumulated Depreciation and Amortization	$ 155
Date of Initial Leasehold or Acquisition Investment	1,978
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Hyde Park One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 990
Land	990
Total Investment in Real Estate	$ 990
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Katonah One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,084
Land	1,084
Total Investment in Real Estate	$ 1,084
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Lagrangeville One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 130
Cost Capitalized Subsequent to Initial Investment	1,043
Land	64
Building and Improvements	1,109
Total Investment in Real Estate	1,173
Accumulated Depreciation and Amortization	$ 382
Date of Initial Leasehold or Acquisition Investment	1,972
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Lakeville One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,028
Land	203
Building and Improvements	825
Total Investment in Real Estate	1,028
Accumulated Depreciation and Amortization	$ 458
Date of Initial Leasehold or Acquisition Investment	2,008
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Levittown One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 503
Cost Capitalized Subsequent to Initial Investment	42
Land	327
Building and Improvements	218
Total Investment in Real Estate	545
Accumulated Depreciation and Amortization	$ 175
Date of Initial Leasehold or Acquisition Investment	1,985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Levittown Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 546
Cost Capitalized Subsequent to Initial Investment	87
Land	356
Building and Improvements	277
Total Investment in Real Estate	633
Accumulated Depreciation and Amortization	$ 210
Date of Initial Leasehold or Acquisition Investment	1,985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Long Island City [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,717
Land	1,183
Building and Improvements	1,534
Total Investment in Real Estate	2,717
Accumulated Depreciation and Amortization	$ 269
Date of Initial Leasehold or Acquisition Investment	2,013
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Mamaroneck One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,429
Land	1,429
Total Investment in Real Estate	$ 1,429
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Massapequa One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 333
Cost Capitalized Subsequent to Initial Investment	285
Land	217
Building and Improvements	401
Total Investment in Real Estate	618
Accumulated Depreciation and Amortization	$ 168
Date of Initial Leasehold or Acquisition Investment	1,985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Mastic One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 313
Cost Capitalized Subsequent to Initial Investment	110
Land	204
Building and Improvements	219
Total Investment in Real Estate	423
Accumulated Depreciation and Amortization	$ 193
Date of Initial Leasehold or Acquisition Investment	1,985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Middletown One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 719
Land	719
Total Investment in Real Estate	$ 719
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Middletown Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 751
Cost Capitalized Subsequent to Initial Investment	274
Land	489
Building and Improvements	536
Total Investment in Real Estate	1,025
Accumulated Depreciation and Amortization	$ 279
Date of Initial Leasehold or Acquisition Investment	1,985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Middletown Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,281
Land	1,281
Total Investment in Real Estate	$ 1,281
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Millwood Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,448
Land	1,448
Total Investment in Real Estate	$ 1,448
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Mount Kisco One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,907
Land	1,907
Total Investment in Real Estate	$ 1,907
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Mount Vernon One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 985
Land	985
Total Investment in Real Estate	$ 985
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Nanuet One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,316
Land	2,316
Total Investment in Real Estate	$ 2,316
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | New Paltz One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 971
Land	971
Total Investment in Real Estate	$ 971
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | New Rochelle One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 188
Cost Capitalized Subsequent to Initial Investment	344
Land	104
Building and Improvements	428
Total Investment in Real Estate	532
Accumulated Depreciation and Amortization	$ 176
Date of Initial Leasehold or Acquisition Investment	1,982
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | New Rochelle Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,887
Land	1,887
Total Investment in Real Estate	$ 1,887
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | New Windsor One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,084
Land	1,084
Total Investment in Real Estate	$ 1,084
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | New York One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 126
Cost Capitalized Subsequent to Initial Investment	399
Land	78
Building and Improvements	447
Total Investment in Real Estate	525
Accumulated Depreciation and Amortization	$ 263
Date of Initial Leasehold or Acquisition Investment	1,972
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Newburgh One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 527
Land	527
Total Investment in Real Estate	$ 527
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Newburgh Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,192
Land	1,192
Total Investment in Real Estate	$ 1,192
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Niskayuna One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 425
Cost Capitalized Subsequent to Initial Investment	35
Land	275
Building and Improvements	185
Total Investment in Real Estate	460
Accumulated Depreciation and Amortization	$ 185
Date of Initial Leasehold or Acquisition Investment	1,986
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | North Lindenhurst One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 295
Cost Capitalized Subsequent to Initial Investment	243
Land	192
Building and Improvements	346
Total Investment in Real Estate	538
Accumulated Depreciation and Amortization	$ 145
Date of Initial Leasehold or Acquisition Investment	1,998
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Ossining One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 71
Cost Capitalized Subsequent to Initial Investment	300
Land	43
Building and Improvements	328
Total Investment in Real Estate	371
Accumulated Depreciation and Amortization	$ 138
Date of Initial Leasehold or Acquisition Investment	1,977
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Ossining Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 231
Cost Capitalized Subsequent to Initial Investment	219
Land	117
Building and Improvements	333
Total Investment in Real Estate	450
Accumulated Depreciation and Amortization	$ 108
Date of Initial Leasehold or Acquisition Investment	1,985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Ozone Park One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 57
Cost Capitalized Subsequent to Initial Investment	367
Land	45
Building and Improvements	379
Total Investment in Real Estate	424
Accumulated Depreciation and Amortization	$ 178
Date of Initial Leasehold or Acquisition Investment	1,976
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Peekskill One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,207
Land	2,207
Total Investment in Real Estate	$ 2,207
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Pelham One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,035
Land	1,035
Total Investment in Real Estate	$ 1,035
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Pelham Manor One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 137
Cost Capitalized Subsequent to Initial Investment	307
Land	75
Building and Improvements	369
Total Investment in Real Estate	444
Accumulated Depreciation and Amortization	$ 183
Date of Initial Leasehold or Acquisition Investment	1,985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Pleasant Valley One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 398
Cost Capitalized Subsequent to Initial Investment	62
Land	240
Building and Improvements	220
Total Investment in Real Estate	460
Accumulated Depreciation and Amortization	$ 204
Date of Initial Leasehold or Acquisition Investment	1,986
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Port Chester One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 941
Building and Improvements	941
Total Investment in Real Estate	941
Accumulated Depreciation and Amortization	$ 332
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Port Chester Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,015
Land	1,015
Total Investment in Real Estate	$ 1,015
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Port Jefferson One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 387
Cost Capitalized Subsequent to Initial Investment	294
Land	246
Building and Improvements	435
Total Investment in Real Estate	681
Accumulated Depreciation and Amortization	$ 215
Date of Initial Leasehold or Acquisition Investment	1,985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Poughkeepsie One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 591
Land	591
Total Investment in Real Estate	$ 591
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Poughkeepsie Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,020
Land	1,020
Total Investment in Real Estate	$ 1,020
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Poughkeepsie Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,231
Cost Capitalized Subsequent to Initial Investment	(31)
Land	1,200
Total Investment in Real Estate	$ 1,200
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Poughkeepsie Four [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,306
Land	1,306
Total Investment in Real Estate	$ 1,306
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Poughkeepsie Five [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,340
Land	1,340
Total Investment in Real Estate	$ 1,340
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Poughkeepsie Six [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,355
Land	1,355
Total Investment in Real Estate	$ 1,355
Date of Initial Leasehold or Acquisition Investment	2,011

Schedule III - Real Estate an81

Schedule III - Real Estate and Accumulated Depreciation and Amortization Part 17 (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule Of Investments In Real Estate [Line Items]
Total Investment in Real Estate	$ 782,166	$ 783,233	$ 595,959	$ 570,275
Accumulated Depreciation And Amortization Description [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	720,099
Cost Capitalized Subsequent to Initial Investment	62,067
Land	474,232
Building and Improvements	307,934
Total Investment in Real Estate	782,166
Accumulated Depreciation and Amortization	120,576
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Rego Park One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	2,783
Land	2,104
Building and Improvements	679
Total Investment in Real Estate	2,783
Accumulated Depreciation and Amortization	$ 138
Date of Initial Leasehold or Acquisition Investment	2,013
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Riverhead One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 724
Land	432
Building and Improvements	292
Total Investment in Real Estate	724
Accumulated Depreciation and Amortization	$ 216
Date of Initial Leasehold or Acquisition Investment	1,998
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Rochester Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 559
Land	159
Building and Improvements	400
Total Investment in Real Estate	559
Accumulated Depreciation and Amortization	$ 173
Date of Initial Leasehold or Acquisition Investment	2,006
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Rochester Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 595
Land	305
Building and Improvements	290
Total Investment in Real Estate	595
Accumulated Depreciation and Amortization	$ 119
Date of Initial Leasehold or Acquisition Investment	2,008
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Rockaway Beach One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 111
Cost Capitalized Subsequent to Initial Investment	277
Land	79
Building and Improvements	309
Total Investment in Real Estate	388
Accumulated Depreciation and Amortization	$ 125
Date of Initial Leasehold or Acquisition Investment	1,972
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Rockville Centre One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 350
Cost Capitalized Subsequent to Initial Investment	66
Land	201
Building and Improvements	215
Total Investment in Real Estate	416
Accumulated Depreciation and Amortization	$ 189
Date of Initial Leasehold or Acquisition Investment	1,985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Rokaway Park One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,605
Land	1,605
Total Investment in Real Estate	$ 1,605
Date of Initial Leasehold or Acquisition Investment	2,013
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Rye One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 872
Land	872
Total Investment in Real Estate	$ 872
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Sag Harbor One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 704
Cost Capitalized Subsequent to Initial Investment	35
Land	458
Building and Improvements	281
Total Investment in Real Estate	739
Accumulated Depreciation and Amortization	$ 221
Date of Initial Leasehold or Acquisition Investment	1,985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Savona One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,314
Land	964
Building and Improvements	350
Total Investment in Real Estate	1,314
Accumulated Depreciation and Amortization	$ 152
Date of Initial Leasehold or Acquisition Investment	2,006
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Sayville One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 345
Cost Capitalized Subsequent to Initial Investment	245
Land	300
Building and Improvements	290
Total Investment in Real Estate	590
Accumulated Depreciation and Amortization	$ 82
Date of Initial Leasehold or Acquisition Investment	1,998
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Scarsdale One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,301
Land	1,301
Total Investment in Real Estate	$ 1,301
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Shrub Oak One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,061
Cost Capitalized Subsequent to Initial Investment	508
Land	691
Building and Improvements	878
Total Investment in Real Estate	1,569
Accumulated Depreciation and Amortization	$ 491
Date of Initial Leasehold or Acquisition Investment	1,985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Sleepy Hollow One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 281
Cost Capitalized Subsequent to Initial Investment	332
Land	130
Building and Improvements	483
Total Investment in Real Estate	613
Accumulated Depreciation and Amortization	$ 348
Date of Initial Leasehold or Acquisition Investment	1,969
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Smithtown One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 88
Cost Capitalized Subsequent to Initial Investment	287
Land	51
Building and Improvements	324
Total Investment in Real Estate	375
Accumulated Depreciation and Amortization	$ 135
Date of Initial Leasehold or Acquisition Investment	1,977
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Spring Valley One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 749
Land	749
Total Investment in Real Estate	$ 749
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | St Albans One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 330
Cost Capitalized Subsequent to Initial Investment	106
Land	215
Building and Improvements	221
Total Investment in Real Estate	436
Accumulated Depreciation and Amortization	$ 166
Date of Initial Leasehold or Acquisition Investment	1,985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Staten Island One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 357
Cost Capitalized Subsequent to Initial Investment	35
Land	230
Building and Improvements	162
Total Investment in Real Estate	392
Accumulated Depreciation and Amortization	$ 132
Date of Initial Leasehold or Acquisition Investment	1,985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Staten Island Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 389
Cost Capitalized Subsequent to Initial Investment	90
Land	254
Building and Improvements	225
Total Investment in Real Estate	479
Accumulated Depreciation and Amortization	$ 192
Date of Initial Leasehold or Acquisition Investment	1,985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Staten Island Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 301
Cost Capitalized Subsequent to Initial Investment	328
Land	196
Building and Improvements	433
Total Investment in Real Estate	629
Accumulated Depreciation and Amortization	$ 207
Date of Initial Leasehold or Acquisition Investment	1,985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Staten Island Four [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 350
Cost Capitalized Subsequent to Initial Investment	290
Land	228
Building and Improvements	412
Total Investment in Real Estate	640
Accumulated Depreciation and Amortization	$ 185
Date of Initial Leasehold or Acquisition Investment	1,985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Stony Brook One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 176
Cost Capitalized Subsequent to Initial Investment	281
Land	105
Building and Improvements	352
Total Investment in Real Estate	457
Accumulated Depreciation and Amortization	$ 163
Date of Initial Leasehold or Acquisition Investment	1,978
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Tarrytown One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 956
Land	956
Total Investment in Real Estate	$ 956
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Tuchahoe One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,650
Land	1,650
Total Investment in Real Estate	$ 1,650
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Wantagh One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 640
Land	370
Building and Improvements	270
Total Investment in Real Estate	640
Accumulated Depreciation and Amortization	$ 198
Date of Initial Leasehold or Acquisition Investment	1,998
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Wappingers Falls One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 452
Building and Improvements	452
Total Investment in Real Estate	452
Accumulated Depreciation and Amortization	$ 242
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Wappingers Falls Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,488
Land	1,488
Total Investment in Real Estate	$ 1,488
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Warsaw One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 990
Land	690
Building and Improvements	300
Total Investment in Real Estate	990
Accumulated Depreciation and Amortization	$ 130
Date of Initial Leasehold or Acquisition Investment	2,006
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Warwick One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,049
Land	1,049
Total Investment in Real Estate	$ 1,049
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | West Nyack One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 936
Land	936
Total Investment in Real Estate	$ 936
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | West Taghkanic One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 203
Cost Capitalized Subsequent to Initial Investment	442
Land	122
Building and Improvements	523
Total Investment in Real Estate	645
Accumulated Depreciation and Amortization	$ 305
Date of Initial Leasehold or Acquisition Investment	1,986
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | White Plains One [Member]
Schedule Of Investments In Real Estate [Line Items]
Cost Capitalized Subsequent to Initial Investment	$ 569
Land	303
Building and Improvements	266
Total Investment in Real Estate	569
Accumulated Depreciation and Amortization	$ 181
Date of Initial Leasehold or Acquisition Investment	1,972
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | White Plains Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,458
Land	1,458
Total Investment in Real Estate	$ 1,458
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Yaphank One [Member]
Schedule Of Investments In Real Estate [Line Items]
Cost Capitalized Subsequent to Initial Investment	$ 798
Land	375
Building and Improvements	423
Total Investment in Real Estate	798
Accumulated Depreciation and Amortization	$ 103
Date of Initial Leasehold or Acquisition Investment	1,993
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Yonkers One [Member]
Schedule Of Investments In Real Estate [Line Items]
Cost Capitalized Subsequent to Initial Investment	$ 610
Building and Improvements	610
Total Investment in Real Estate	610
Accumulated Depreciation and Amortization	$ 251
Date of Initial Leasehold or Acquisition Investment	1,970
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Yonkers Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Cost Capitalized Subsequent to Initial Investment	$ 1,040
Land	780
Building and Improvements	260
Total Investment in Real Estate	1,040
Accumulated Depreciation and Amortization	$ 81
Date of Initial Leasehold or Acquisition Investment	1,990
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Yonkers Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,020
Cost Capitalized Subsequent to Initial Investment	64
Land	665
Building and Improvements	419
Total Investment in Real Estate	1,084
Accumulated Depreciation and Amortization	$ 332
Date of Initial Leasehold or Acquisition Investment	1,985
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Yonkers Four [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 291
Cost Capitalized Subsequent to Initial Investment	1,052
Land	216
Building and Improvements	1,127
Total Investment in Real Estate	1,343
Accumulated Depreciation and Amortization	$ 364
Date of Initial Leasehold or Acquisition Investment	1,972
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Yonkers Five [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,907
Land	1,907
Total Investment in Real Estate	$ 1,907
Date of Initial Leasehold or Acquisition Investment	2,011
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Yorktown Heights One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,700
Building and Improvements	1,700
Total Investment in Real Estate	1,700
Accumulated Depreciation and Amortization	$ 47
Date of Initial Leasehold or Acquisition Investment	2,013
NEW YORK | Accumulated Depreciation And Amortization Description [Member] | Yorktown Heights Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,365
Land	2,365
Total Investment in Real Estate	$ 2,365
Date of Initial Leasehold or Acquisition Investment	2,011
OHIO | Accumulated Depreciation And Amortization Description [Member] | Crestline One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,202
Land	285
Building and Improvements	917
Total Investment in Real Estate	1,202
Accumulated Depreciation and Amortization	$ 376
Date of Initial Leasehold or Acquisition Investment	2,008
OHIO | Accumulated Depreciation And Amortization Description [Member] | Mansfield One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 922
Land	332
Building and Improvements	590
Total Investment in Real Estate	922
Accumulated Depreciation and Amortization	$ 227
Date of Initial Leasehold or Acquisition Investment	2,008
OHIO | Accumulated Depreciation And Amortization Description [Member] | Mansfield Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,950
Land	700
Building and Improvements	1,250
Total Investment in Real Estate	1,950
Accumulated Depreciation and Amortization	$ 468
Date of Initial Leasehold or Acquisition Investment	2,009
OHIO | Accumulated Depreciation And Amortization Description [Member] | Monroeville One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,580
Land	485
Building and Improvements	2,095
Total Investment in Real Estate	2,580
Accumulated Depreciation and Amortization	$ 763
Date of Initial Leasehold or Acquisition Investment	2,009
OREGON | Accumulated Depreciation And Amortization Description [Member] | Banks One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 498
Land	498
Total Investment in Real Estate	$ 498
Date of Initial Leasehold or Acquisition Investment	2,015
OREGON | Accumulated Depreciation And Amortization Description [Member] | Estacada One Member
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 646
Land	84
Building and Improvements	562
Total Investment in Real Estate	646
Accumulated Depreciation and Amortization	$ 48
Date of Initial Leasehold or Acquisition Investment	2,015
OREGON | Accumulated Depreciation And Amortization Description [Member] | Pendleton One Member
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 766
Land	122
Building and Improvements	644
Total Investment in Real Estate	766
Accumulated Depreciation and Amortization	$ 61
Date of Initial Leasehold or Acquisition Investment	2,015
OREGON | Accumulated Depreciation And Amortization Description [Member] | Portland One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 4,416
Land	3,368
Building and Improvements	1,048
Total Investment in Real Estate	4,416
Accumulated Depreciation and Amortization	$ 94
Date of Initial Leasehold or Acquisition Investment	2,015

Schedule III - Real Estate an82

Schedule III - Real Estate and Accumulated Depreciation and Amortization Part 18 (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule Of Investments In Real Estate [Line Items]
Total Investment in Real Estate	$ 782,166	$ 783,233	$ 595,959	$ 570,275
Accumulated Depreciation And Amortization Description [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	720,099
Cost Capitalized Subsequent to Initial Investment	62,067
Land	474,232
Building and Improvements	307,934
Total Investment in Real Estate	782,166
Accumulated Depreciation and Amortization	120,576
OREGON | Accumulated Depreciation And Amortization Description [Member] | Salem One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	1,071
Land	399
Building and Improvements	672
Total Investment in Real Estate	1,071
Accumulated Depreciation and Amortization	$ 77
Date of Initial Leasehold or Acquisition Investment	2,015
OREGON | Accumulated Depreciation And Amortization Description [Member] | Salem Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,350
Land	521
Building and Improvements	829
Total Investment in Real Estate	1,350
Accumulated Depreciation and Amortization	$ 76
Date of Initial Leasehold or Acquisition Investment	2,015
OREGON | Accumulated Depreciation And Amortization Description [Member] | Salem Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,408
Land	524
Building and Improvements	884
Total Investment in Real Estate	1,408
Accumulated Depreciation and Amortization	$ 84
Date of Initial Leasehold or Acquisition Investment	2,015
OREGON | Accumulated Depreciation And Amortization Description [Member] | Salem Four [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 4,215
Land	3,182
Building and Improvements	1,033
Total Investment in Real Estate	4,215
Accumulated Depreciation and Amortization	$ 100
Date of Initial Leasehold or Acquisition Investment	2,015
OREGON | Accumulated Depreciation And Amortization Description [Member] | Salem Five [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 4,614
Land	3,517
Building and Improvements	1,097
Total Investment in Real Estate	4,614
Accumulated Depreciation and Amortization	$ 99
Date of Initial Leasehold or Acquisition Investment	2,015
OREGON | Accumulated Depreciation And Amortization Description [Member] | Springfield One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,398
Land	796
Building and Improvements	602
Total Investment in Real Estate	1,398
Accumulated Depreciation and Amortization	$ 67
Date of Initial Leasehold or Acquisition Investment	2,015
PA | Accumulated Depreciation And Amortization Description [Member] | Allentown One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 358
Cost Capitalized Subsequent to Initial Investment	31
Land	233
Building and Improvements	156
Total Investment in Real Estate	389
Accumulated Depreciation and Amortization	$ 125
Date of Initial Leasehold or Acquisition Investment	1,985
PA | Accumulated Depreciation And Amortization Description [Member] | Allison Park One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,500
Land	850
Building and Improvements	650
Total Investment in Real Estate	1,500
Accumulated Depreciation and Amortization	$ 343
Date of Initial Leasehold or Acquisition Investment	2,010
PA | Accumulated Depreciation And Amortization Description [Member] | Harrisburg One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 399
Cost Capitalized Subsequent to Initial Investment	213
Land	199
Building and Improvements	413
Total Investment in Real Estate	612
Accumulated Depreciation and Amortization	$ 313
Date of Initial Leasehold or Acquisition Investment	1,989
PA | Accumulated Depreciation And Amortization Description [Member] | Havertown One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 402
Cost Capitalized Subsequent to Initial Investment	63
Land	254
Building and Improvements	211
Total Investment in Real Estate	465
Accumulated Depreciation and Amortization	$ 146
Date of Initial Leasehold or Acquisition Investment	1,985
PA | Accumulated Depreciation And Amortization Description [Member] | Lancaster One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 643
Cost Capitalized Subsequent to Initial Investment	17
Land	300
Building and Improvements	360
Total Investment in Real Estate	660
Accumulated Depreciation and Amortization	$ 360
Date of Initial Leasehold or Acquisition Investment	1,989
PA | Accumulated Depreciation And Amortization Description [Member] | New Holland One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 313
Cost Capitalized Subsequent to Initial Investment	24
Land	143
Building and Improvements	194
Total Investment in Real Estate	337
Accumulated Depreciation and Amortization	$ 185
Date of Initial Leasehold or Acquisition Investment	1,989
PA | Accumulated Depreciation And Amortization Description [Member] | New Kensington One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,375
Land	675
Building and Improvements	700
Total Investment in Real Estate	1,375
Accumulated Depreciation and Amortization	$ 207
Date of Initial Leasehold or Acquisition Investment	2,010
PA | Accumulated Depreciation And Amortization Description [Member] | New Oxford One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,045
Cost Capitalized Subsequent to Initial Investment	(75)
Land	181
Building and Improvements	789
Total Investment in Real Estate	970
Accumulated Depreciation and Amortization	$ 777
Date of Initial Leasehold or Acquisition Investment	1,996
PA | Accumulated Depreciation And Amortization Description [Member] | Philadelphia One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 406
Cost Capitalized Subsequent to Initial Investment	175
Land	264
Building and Improvements	317
Total Investment in Real Estate	581
Accumulated Depreciation and Amortization	$ 244
Date of Initial Leasehold or Acquisition Investment	1,985
PA | Accumulated Depreciation And Amortization Description [Member] | Philadelphia Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,252
Land	814
Building and Improvements	438
Total Investment in Real Estate	1,252
Accumulated Depreciation and Amortization	$ 139
Date of Initial Leasehold or Acquisition Investment	2,009
PA | Accumulated Depreciation And Amortization Description [Member] | Pottstown One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 451
Cost Capitalized Subsequent to Initial Investment	2
Land	148
Building and Improvements	305
Total Investment in Real Estate	453
Accumulated Depreciation and Amortization	$ 304
Date of Initial Leasehold or Acquisition Investment	1,990
PA | Accumulated Depreciation And Amortization Description [Member] | Reading One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 750
Cost Capitalized Subsequent to Initial Investment	49
Building and Improvements	799
Total Investment in Real Estate	799
Accumulated Depreciation and Amortization	$ 799
Date of Initial Leasehold or Acquisition Investment	1,989
RHODE ISLAND | Accumulated Depreciation And Amortization Description [Member] | Ashaway One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 619
Land	402
Building and Improvements	217
Total Investment in Real Estate	619
Accumulated Depreciation and Amortization	$ 105
Date of Initial Leasehold or Acquisition Investment	2,004
RHODE ISLAND | Accumulated Depreciation And Amortization Description [Member] | Barrington One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 490
Cost Capitalized Subsequent to Initial Investment	180
Land	319
Building and Improvements	351
Total Investment in Real Estate	670
Accumulated Depreciation and Amortization	$ 233
Date of Initial Leasehold or Acquisition Investment	1,985
RHODE ISLAND | Accumulated Depreciation And Amortization Description [Member] | East Providence One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,298
Cost Capitalized Subsequent to Initial Investment	(1,687)
Land	89
Building and Improvements	522
Total Investment in Real Estate	$ 611
Date of Initial Leasehold or Acquisition Investment	1,985
RHODE ISLAND | Accumulated Depreciation And Amortization Description [Member] | NProvidence One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 542
Cost Capitalized Subsequent to Initial Investment	159
Land	353
Building and Improvements	348
Total Investment in Real Estate	701
Accumulated Depreciation and Amortization	$ 219
Date of Initial Leasehold or Acquisition Investment	1,985
TEXAS | Accumulated Depreciation And Amortization Description [Member] | Austin One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 462
Land	274
Building and Improvements	188
Total Investment in Real Estate	462
Accumulated Depreciation and Amortization	$ 119
Date of Initial Leasehold or Acquisition Investment	2,007
TEXAS | Accumulated Depreciation And Amortization Description [Member] | Austin Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,368
Land	738
Building and Improvements	1,630
Total Investment in Real Estate	2,368
Accumulated Depreciation and Amortization	$ 730
Date of Initial Leasehold or Acquisition Investment	2,007
TEXAS | Accumulated Depreciation And Amortization Description [Member] | Austin Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,511
Land	1,595
Building and Improvements	1,916
Total Investment in Real Estate	3,511
Accumulated Depreciation and Amortization	$ 868
Date of Initial Leasehold or Acquisition Investment	2,007
TEXAS | Accumulated Depreciation And Amortization Description [Member] | Bedford Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 353
Land	113
Building and Improvements	240
Total Investment in Real Estate	353
Accumulated Depreciation and Amortization	$ 164
Date of Initial Leasehold or Acquisition Investment	2,007
TEXAS | Accumulated Depreciation And Amortization Description [Member] | Ft Worth One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,115
Land	866
Building and Improvements	1,249
Total Investment in Real Estate	2,115
Accumulated Depreciation and Amortization	$ 633
Date of Initial Leasehold or Acquisition Investment	2,007
TEXAS | Accumulated Depreciation And Amortization Description [Member] | Garland One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,296
Land	245
Building and Improvements	3,051
Total Investment in Real Estate	3,296
Accumulated Depreciation and Amortization	$ 286
Date of Initial Leasehold or Acquisition Investment	2,014
TEXAS | Accumulated Depreciation And Amortization Description [Member] | Garland Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 4,439
Land	439
Building and Improvements	4,000
Total Investment in Real Estate	4,439
Accumulated Depreciation and Amortization	$ 392
Date of Initial Leasehold or Acquisition Investment	2,014
TEXAS | Accumulated Depreciation And Amortization Description [Member] | Harker Heights One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,051
Cost Capitalized Subsequent to Initial Investment	(9)
Land	579
Building and Improvements	1,463
Total Investment in Real Estate	2,042
Accumulated Depreciation and Amortization	$ 1,081
Date of Initial Leasehold or Acquisition Investment	2,007
TEXAS | Accumulated Depreciation And Amortization Description [Member] | Houston One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,689
Land	224
Building and Improvements	1,465
Total Investment in Real Estate	1,689
Accumulated Depreciation and Amortization	$ 623
Date of Initial Leasehold or Acquisition Investment	2,007
TEXAS | Accumulated Depreciation And Amortization Description [Member] | Houston Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,803
Land	535
Building and Improvements	2,268
Total Investment in Real Estate	2,803
Accumulated Depreciation and Amortization	$ 17
Date of Initial Leasehold or Acquisition Investment	2,016
TEXAS | Accumulated Depreciation And Amortization Description [Member] | Keller One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,507
Land	996
Building and Improvements	1,511
Total Investment in Real Estate	2,507
Accumulated Depreciation and Amortization	$ 719
Date of Initial Leasehold or Acquisition Investment	2,007
TEXAS | Accumulated Depreciation And Amortization Description [Member] | Lewisville One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 494
Land	110
Building and Improvements	384
Total Investment in Real Estate	494
Accumulated Depreciation and Amortization	$ 204
Date of Initial Leasehold or Acquisition Investment	2,008
TEXAS | Accumulated Depreciation And Amortization Description [Member] | Midlothian One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 429
Land	72
Building and Improvements	357
Total Investment in Real Estate	429
Accumulated Depreciation and Amortization	$ 208
Date of Initial Leasehold or Acquisition Investment	2,007
TEXAS | Accumulated Depreciation And Amortization Description [Member] | Port Arthur [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,648
Land	505
Building and Improvements	2,143
Total Investment in Real Estate	2,648
Accumulated Depreciation and Amortization	$ 17
Date of Initial Leasehold or Acquisition Investment	2,016
TEXAS | Accumulated Depreciation And Amortization Description [Member] | San Marcos One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,954
Land	251
Building and Improvements	1,703
Total Investment in Real Estate	1,954
Accumulated Depreciation and Amortization	$ 745
Date of Initial Leasehold or Acquisition Investment	2,007
TEXAS | Accumulated Depreciation And Amortization Description [Member] | Temple One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,406
Cost Capitalized Subsequent to Initial Investment	(11)
Land	1,205
Building and Improvements	1,190
Total Investment in Real Estate	2,395
Accumulated Depreciation and Amortization	$ 580
Date of Initial Leasehold or Acquisition Investment	2,007
TEXAS | Accumulated Depreciation And Amortization Description [Member] | The Colony One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 4,396
Land	337
Building and Improvements	4,059
Total Investment in Real Estate	4,396
Accumulated Depreciation and Amortization	$ 1,675
Date of Initial Leasehold or Acquisition Investment	2,007
TEXAS | Accumulated Depreciation And Amortization Description [Member] | Waco One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,884
Land	894
Building and Improvements	2,990
Total Investment in Real Estate	3,884
Accumulated Depreciation and Amortization	$ 1,465
Date of Initial Leasehold or Acquisition Investment	2,007
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Springfield One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 4,257
Land	2,969
Building and Improvements	1,288
Total Investment in Real Estate	4,257
Accumulated Depreciation and Amortization	$ 250
Date of Initial Leasehold or Acquisition Investment	2,013
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Alexandria One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 649
Land	649
Total Investment in Real Estate	$ 649
Date of Initial Leasehold or Acquisition Investment	2,013
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Alexandria Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 656
Land	409
Building and Improvements	247
Total Investment in Real Estate	656
Accumulated Depreciation and Amortization	$ 56
Date of Initial Leasehold or Acquisition Investment	2,013
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Alexandria Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 712
Land	712
Total Investment in Real Estate	$ 712
Date of Initial Leasehold or Acquisition Investment	2,013
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Alexandria Four [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 735
Land	735
Total Investment in Real Estate	$ 735
Date of Initial Leasehold or Acquisition Investment	2,013
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Alexandria Five [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,327
Land	1,327
Total Investment in Real Estate	$ 1,327
Date of Initial Leasehold or Acquisition Investment	2,013
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Alexandria Six [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,388
Land	1,020
Building and Improvements	368
Total Investment in Real Estate	1,388
Accumulated Depreciation and Amortization	$ 85
Date of Initial Leasehold or Acquisition Investment	2,013
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Alexandria Seven [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,582
Land	1,150
Building and Improvements	432
Total Investment in Real Estate	1,582
Accumulated Depreciation and Amortization	$ 91
Date of Initial Leasehold or Acquisition Investment	2,013
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Alexandria Eight [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,757
Land	1,313
Building and Improvements	444
Total Investment in Real Estate	1,757
Accumulated Depreciation and Amortization	$ 99
Date of Initial Leasehold or Acquisition Investment	2,013
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Annandale One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,718
Land	1,718
Total Investment in Real Estate	$ 1,718
Date of Initial Leasehold or Acquisition Investment	2,013
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Arlington One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,083
Land	1,083
Total Investment in Real Estate	$ 1,083
Date of Initial Leasehold or Acquisition Investment	2,013
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Arlington Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,464
Land	1,085
Building and Improvements	379
Total Investment in Real Estate	1,464
Accumulated Depreciation and Amortization	$ 81
Date of Initial Leasehold or Acquisition Investment	2,013
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Arlington Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,014
Land	1,516
Building and Improvements	498
Total Investment in Real Estate	2,014
Accumulated Depreciation and Amortization	$ 104
Date of Initial Leasehold or Acquisition Investment	2,013
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Arlington Four [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,062
Land	1,603
Building and Improvements	459
Total Investment in Real Estate	2,062
Accumulated Depreciation and Amortization	$ 95
Date of Initial Leasehold or Acquisition Investment	2,013
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Ashland One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 840
Land	840
Total Investment in Real Estate	$ 840
Date of Initial Leasehold or Acquisition Investment	2,005
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Chesapeake One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 780
Cost Capitalized Subsequent to Initial Investment	(186)
Land	398
Building and Improvements	196
Total Investment in Real Estate	594
Accumulated Depreciation and Amortization	$ 48
Date of Initial Leasehold or Acquisition Investment	1,990
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Chesapeake Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,004
Cost Capitalized Subsequent to Initial Investment	110
Land	385
Building and Improvements	729
Total Investment in Real Estate	1,114
Accumulated Depreciation and Amortization	$ 647
Date of Initial Leasehold or Acquisition Investment	1,990
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Fairfax One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,825
Land	1,190
Building and Improvements	635
Total Investment in Real Estate	1,825
Accumulated Depreciation and Amortization	$ 132
Date of Initial Leasehold or Acquisition Investment	2,013
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Fairfax Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,078
Land	1,365
Building and Improvements	713
Total Investment in Real Estate	2,078
Accumulated Depreciation and Amortization	$ 128
Date of Initial Leasehold or Acquisition Investment	2,013
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Fairfax Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,348
Land	2,351
Building and Improvements	997
Total Investment in Real Estate	3,348
Accumulated Depreciation and Amortization	$ 195
Date of Initial Leasehold or Acquisition Investment	2,013
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Fairfax Four [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 4,454
Land	3,370
Building and Improvements	1,084
Total Investment in Real Estate	4,454
Accumulated Depreciation and Amortization	$ 213
Date of Initial Leasehold or Acquisition Investment	2,013
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Farmville One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,227
Land	622
Building and Improvements	605
Total Investment in Real Estate	1,227
Accumulated Depreciation and Amortization	$ 285
Date of Initial Leasehold or Acquisition Investment	2,005
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Fredericksburg One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,279
Land	469
Building and Improvements	810
Total Investment in Real Estate	1,279
Accumulated Depreciation and Amortization	$ 381
Date of Initial Leasehold or Acquisition Investment	2,005
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Fredericksburg Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,289
Cost Capitalized Subsequent to Initial Investment	24
Land	798
Building and Improvements	515
Total Investment in Real Estate	1,313
Accumulated Depreciation and Amortization	$ 247
Date of Initial Leasehold or Acquisition Investment	2,005
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Fredericksburg Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,716
Land	996
Building and Improvements	720
Total Investment in Real Estate	1,716
Accumulated Depreciation and Amortization	$ 339
Date of Initial Leasehold or Acquisition Investment	2,005
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Fredericksburg Four [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,623
Land	2,828
Building and Improvements	795
Total Investment in Real Estate	3,623
Accumulated Depreciation and Amortization	$ 374
Date of Initial Leasehold or Acquisition Investment	2,005

Schedule III - Real Estate an83

Schedule III - Real Estate and Accumulated Depreciation and Amortization Part 19 (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule Of Investments In Real Estate [Line Items]
Total Investment in Real Estate	$ 782,166	$ 783,233	$ 595,959	$ 570,275
Accumulated Depreciation And Amortization Description [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	720,099
Cost Capitalized Subsequent to Initial Investment	62,067
Land	474,232
Building and Improvements	307,934
Total Investment in Real Estate	782,166
Accumulated Depreciation and Amortization	120,576
Accumulated Depreciation And Amortization Description [Member] | Miscellaneous [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	32,937
Cost Capitalized Subsequent to Initial Investment	11,470
Land	14,749
Building and Improvements	29,658
Total Investment in Real Estate	44,407
Accumulated Depreciation and Amortization	19,388
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Glen Allen One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	1,037
Land	412
Building and Improvements	625
Total Investment in Real Estate	1,037
Accumulated Depreciation and Amortization	$ 294
Date of Initial Leasehold or Acquisition Investment	2,005
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Glen Allen Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,077
Land	322
Building and Improvements	755
Total Investment in Real Estate	1,077
Accumulated Depreciation and Amortization	$ 355
Date of Initial Leasehold or Acquisition Investment	2,005
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | King William One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,688
Land	1,068
Building and Improvements	620
Total Investment in Real Estate	1,688
Accumulated Depreciation and Amortization	$ 292
Date of Initial Leasehold or Acquisition Investment	2,005
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Mechanicsville One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 903
Land	273
Building and Improvements	630
Total Investment in Real Estate	903
Accumulated Depreciation and Amortization	$ 296
Date of Initial Leasehold or Acquisition Investment	2,005
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Mechanicsville Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 957
Land	324
Building and Improvements	633
Total Investment in Real Estate	957
Accumulated Depreciation and Amortization	$ 323
Date of Initial Leasehold or Acquisition Investment	2,005
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Mechanicsville Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,043
Land	223
Building and Improvements	820
Total Investment in Real Estate	1,043
Accumulated Depreciation and Amortization	$ 386
Date of Initial Leasehold or Acquisition Investment	2,005
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Mechanicsville Four [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,125
Land	505
Building and Improvements	620
Total Investment in Real Estate	1,125
Accumulated Depreciation and Amortization	$ 292
Date of Initial Leasehold or Acquisition Investment	2,005
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Mechanicsville Five [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,476
Land	876
Building and Improvements	600
Total Investment in Real Estate	1,476
Accumulated Depreciation and Amortization	$ 282
Date of Initial Leasehold or Acquisition Investment	2,005
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Mechanicsville Six [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,677
Land	1,157
Building and Improvements	520
Total Investment in Real Estate	1,677
Accumulated Depreciation and Amortization	$ 245
Date of Initial Leasehold or Acquisition Investment	2,005
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Montpelier One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,481
Cost Capitalized Subsequent to Initial Investment	(114)
Land	1,612
Building and Improvements	755
Total Investment in Real Estate	2,367
Accumulated Depreciation and Amortization	$ 355
Date of Initial Leasehold or Acquisition Investment	2,005
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Norfolk One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 535
Cost Capitalized Subsequent to Initial Investment	6
Land	311
Building and Improvements	230
Total Investment in Real Estate	541
Accumulated Depreciation and Amortization	$ 230
Date of Initial Leasehold or Acquisition Investment	1,990
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Petersburg One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,441
Land	816
Building and Improvements	625
Total Investment in Real Estate	1,441
Accumulated Depreciation and Amortization	$ 294
Date of Initial Leasehold or Acquisition Investment	2,005
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Portsmouth One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 562
Cost Capitalized Subsequent to Initial Investment	34
Land	222
Building and Improvements	374
Total Investment in Real Estate	596
Accumulated Depreciation and Amortization	$ 363
Date of Initial Leasehold or Acquisition Investment	1,990
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Richmond One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,132
Cost Capitalized Subsequent to Initial Investment	(41)
Land	506
Building and Improvements	585
Total Investment in Real Estate	1,091
Accumulated Depreciation and Amortization	$ 275
Date of Initial Leasehold or Acquisition Investment	2,005
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Ruther Glen One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 466
Land	31
Building and Improvements	435
Total Investment in Real Estate	466
Accumulated Depreciation and Amortization	$ 205
Date of Initial Leasehold or Acquisition Investment	2,005
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Sandston One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 722
Land	102
Building and Improvements	620
Total Investment in Real Estate	722
Accumulated Depreciation and Amortization	$ 292
Date of Initial Leasehold or Acquisition Investment	2,005
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Spotsylvania One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,290
Land	490
Building and Improvements	800
Total Investment in Real Estate	1,290
Accumulated Depreciation and Amortization	$ 376
Date of Initial Leasehold or Acquisition Investment	2,005
VIRGINIA | Accumulated Depreciation And Amortization Description [Member] | Springfield One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 4,257
Land	2,969
Building and Improvements	1,288
Total Investment in Real Estate	4,257
Accumulated Depreciation and Amortization	$ 250
Date of Initial Leasehold or Acquisition Investment	2,013
WASHINGTON | Accumulated Depreciation And Amortization Description [Member] | Auburn One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 3,022
Land	1,965
Building and Improvements	1,057
Total Investment in Real Estate	3,022
Accumulated Depreciation and Amortization	$ 99
Date of Initial Leasehold or Acquisition Investment	2,015
WASHINGTON | Accumulated Depreciation And Amortization Description [Member] | Bellevue One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,725
Land	886
Building and Improvements	839
Total Investment in Real Estate	1,725
Accumulated Depreciation and Amortization	$ 79
Date of Initial Leasehold or Acquisition Investment	2,015
WASHINGTON | Accumulated Depreciation And Amortization Description [Member] | Chehalis One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,176
Land	313
Building and Improvements	863
Total Investment in Real Estate	1,176
Accumulated Depreciation and Amortization	$ 89
Date of Initial Leasehold or Acquisition Investment	2,015
WASHINGTON | Accumulated Depreciation And Amortization Description [Member] | Colfax One Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 4,800
Land	3,611
Building and Improvements	1,189
Total Investment in Real Estate	4,800
Accumulated Depreciation and Amortization	$ 112
Date of Initial Leasehold or Acquisition Investment	2,015
WASHINGTON | Accumulated Depreciation And Amortization Description [Member] | Federal Way One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 4,218
Land	2,973
Building and Improvements	1,245
Total Investment in Real Estate	4,218
Accumulated Depreciation and Amortization	$ 126
Date of Initial Leasehold or Acquisition Investment	2,015
WASHINGTON | Accumulated Depreciation And Amortization Description [Member] | Fife One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,181
Land	414
Building and Improvements	767
Total Investment in Real Estate	1,181
Accumulated Depreciation and Amortization	$ 78
Date of Initial Leasehold or Acquisition Investment	2,015
WASHINGTON | Accumulated Depreciation And Amortization Description [Member] | Kent One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,900
Land	2,066
Building and Improvements	834
Total Investment in Real Estate	2,900
Accumulated Depreciation and Amortization	$ 85
Date of Initial Leasehold or Acquisition Investment	2,015
WASHINGTON | Accumulated Depreciation And Amortization Description [Member] | Monroe One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,792
Land	1,556
Building and Improvements	1,236
Total Investment in Real Estate	2,792
Accumulated Depreciation and Amortization	$ 119
Date of Initial Leasehold or Acquisition Investment	2,015
WASHINGTON | Accumulated Depreciation And Amortization Description [Member] | PortOrchard One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,019
Land	161
Building and Improvements	1,858
Total Investment in Real Estate	2,019
Accumulated Depreciation and Amortization	$ 149
Date of Initial Leasehold or Acquisition Investment	2,015
WASHINGTON | Accumulated Depreciation And Amortization Description [Member] | Puyallup One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 831
Land	172
Building and Improvements	659
Total Investment in Real Estate	831
Accumulated Depreciation and Amortization	$ 72
Date of Initial Leasehold or Acquisition Investment	2,015
WASHINGTON | Accumulated Depreciation And Amortization Description [Member] | Puyallup Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,035
Land	465
Building and Improvements	1,570
Total Investment in Real Estate	2,035
Accumulated Depreciation and Amortization	$ 145
Date of Initial Leasehold or Acquisition Investment	2,015
WASHINGTON | Accumulated Depreciation And Amortization Description [Member] | Puyallup Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 4,050
Land	2,394
Building and Improvements	1,656
Total Investment in Real Estate	4,050
Accumulated Depreciation and Amortization	$ 190
Date of Initial Leasehold or Acquisition Investment	2,015
WASHINGTON | Accumulated Depreciation And Amortization Description [Member] | Renton One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,485
Land	952
Building and Improvements	533
Total Investment in Real Estate	1,485
Accumulated Depreciation and Amortization	$ 68
Date of Initial Leasehold or Acquisition Investment	2,015
WASHINGTON | Accumulated Depreciation And Amortization Description [Member] | Seattle One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 346
Land	346
Total Investment in Real Estate	$ 346
Date of Initial Leasehold or Acquisition Investment	2,015
WASHINGTON | Accumulated Depreciation And Amortization Description [Member] | Seattle Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 717
Land	193
Building and Improvements	524
Total Investment in Real Estate	717
Accumulated Depreciation and Amortization	$ 47
Date of Initial Leasehold or Acquisition Investment	2,015
WASHINGTON | Accumulated Depreciation And Amortization Description [Member] | Seattle Three [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,884
Land	1,223
Building and Improvements	661
Total Investment in Real Estate	1,884
Accumulated Depreciation and Amortization	$ 60
Date of Initial Leasehold or Acquisition Investment	2,015
WASHINGTON | Accumulated Depreciation And Amortization Description [Member] | Silverdale One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 2,178
Land	1,217
Building and Improvements	961
Total Investment in Real Estate	2,178
Accumulated Depreciation and Amortization	$ 97
Date of Initial Leasehold or Acquisition Investment	2,015
WASHINGTON | Accumulated Depreciation And Amortization Description [Member] | Snohomish One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 955
Land	955
Total Investment in Real Estate	$ 955
Date of Initial Leasehold or Acquisition Investment	2,015
WASHINGTON | Accumulated Depreciation And Amortization Description [Member] | South Bend One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 760
Land	121
Building and Improvements	639
Total Investment in Real Estate	760
Accumulated Depreciation and Amortization	$ 56
Date of Initial Leasehold or Acquisition Investment	2,015
WASHINGTON | Accumulated Depreciation And Amortization Description [Member] | Spokane One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 346
Land	346
Total Investment in Real Estate	$ 346
Date of Initial Leasehold or Acquisition Investment	2,015
WASHINGTON | Accumulated Depreciation And Amortization Description [Member] | Tacoma One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 518
Land	518
Total Investment in Real Estate	$ 518
Date of Initial Leasehold or Acquisition Investment	2,015
WASHINGTON | Accumulated Depreciation And Amortization Description [Member] | Tacoma Two [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 671
Land	671
Total Investment in Real Estate	$ 671
Date of Initial Leasehold or Acquisition Investment	2,015
WASHINGTON | Accumulated Depreciation And Amortization Description [Member] | Tenino One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 937
Land	219
Building and Improvements	718
Total Investment in Real Estate	937
Accumulated Depreciation and Amortization	$ 64
Date of Initial Leasehold or Acquisition Investment	2,015
WASHINGTON | Accumulated Depreciation And Amortization Description [Member] | Vancouver One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 1,214
Land	163
Building and Improvements	1,051
Total Investment in Real Estate	1,214
Accumulated Depreciation and Amortization	$ 84
Date of Initial Leasehold or Acquisition Investment	2,015
WASHINGTON | Accumulated Depreciation And Amortization Description [Member] | Wilbur One [Member]
Schedule Of Investments In Real Estate [Line Items]
Initial Cost of Leasehold or Acquisition Investment to Company	$ 629
Land	153
Building and Improvements	476
Total Investment in Real Estate	629
Accumulated Depreciation and Amortization	$ 47
Date of Initial Leasehold or Acquisition Investment	2,015

Schedule III - Real Estate an84

Schedule III - Real Estate and Accumulated Depreciation and Amortization Part 20 (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2016
SEC Schedule III, Real Estate and Accumulated Depreciation Disclosure [Abstract]
Date of Initial Leasehold or Acquisition Investment	Various

Schedule III - Real Estate an85

Schedule III - Real Estate and Accumulated Depreciation and Amortization Part 21 (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2016
Minimum [Member]
Schedule Of Investments In Real Estate [Line Items]
Estimated useful lives of the assets	16 years
Maximum [Member]
Schedule Of Investments In Real Estate [Line Items]
Estimated useful lives of the assets	25 years

Schedule III - Real Estate an86

Schedule III - Real Estate and Accumulated Depreciation and Amortization Part 22 (Parenthetical) (Detail)	Dec. 31, 2016USD ($)
SEC Schedule III, Real Estate and Accumulated Depreciation Disclosure [Abstract]
Aggregate cost for federal income tax	$ 617,464,000

Schedule IV - Mortgage Loans 87

Schedule IV - Mortgage Loans on Real Estate (Detail)	12 Months Ended
	Dec. 31, 2016USD ($)
Mortgage Loans on Real Estate [Line Items]
Prior Liens	$ 0
Face Value at Inception	38,489,000
Amount of Principal Unpaid at Close of Period	$ 32,737,000
Borrower A [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Horsham, PA
Interest Rate	10.00%
Final Maturity Date	2024-07
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	237,000
Amount of Principal Unpaid at Close of Period	$ 146,000
Borrower B [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Green Island, NY
Interest Rate	11.00%
Final Maturity Date	2018-08
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	298,000
Amount of Principal Unpaid at Close of Period	$ 75,000
Borrower C [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Concord, NH
Interest Rate	9.50%
Final Maturity Date	2028-08
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	210,000
Amount of Principal Unpaid at Close of Period	$ 165,000
Borrower D [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Irvington, NJ
Interest Rate	10.00%
Final Maturity Date	2022-07
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	300,000
Amount of Principal Unpaid at Close of Period	$ 202,000
Borrower E [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Kernersville/Lexington, NC
Interest Rate	8.00%
Final Maturity Date	2026-07
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	568,000
Amount of Principal Unpaid at Close of Period	$ 291,000
Borrower F [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Wantagh, NY
Interest Rate	9.00%
Final Maturity Date	2032-05
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	455,000
Amount of Principal Unpaid at Close of Period	$ 409,000
Borrower G [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Fullerton Hts, MD
Interest Rate	9.00%
Final Maturity Date	2019-05
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	225,000
Amount of Principal Unpaid at Close of Period	$ 35,000
Borrower H [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Springfield, MA
Interest Rate	9.00%
Final Maturity Date	2019-07
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	131,000
Amount of Principal Unpaid at Close of Period	$ 108,000
Borrower I [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	E. Patchogue, NY
Interest Rate	9.00%
Final Maturity Date	2019-08
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	200,000
Amount of Principal Unpaid at Close of Period	$ 181,000
Borrower J [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Union City, NJ
Interest Rate	9.00%
Final Maturity Date	2019-09
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	800,000
Amount of Principal Unpaid at Close of Period	$ 740,000
Borrower K [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Bronx, NY
Interest Rate	9.00%
Final Maturity Date	2019-12
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	240,000
Amount of Principal Unpaid at Close of Period	$ 121,000
Borrower L [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Seaford, NY
Interest Rate	9.00%
Final Maturity Date	2020-01
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	488,000
Amount of Principal Unpaid at Close of Period	$ 446,000
Borrower M [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Spotswood, NJ
Interest Rate	9.00%
Final Maturity Date	2020-01
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	306,000
Amount of Principal Unpaid at Close of Period	$ 280,000
Borrower N [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Freeport, NY
Interest Rate	9.00%
Final Maturity Date	2020-05
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	206,000
Amount of Principal Unpaid at Close of Period	$ 191,000
Borrower O [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Pleasant Valley, NY
Interest Rate	9.00%
Final Maturity Date	2020-09
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	230,000
Amount of Principal Unpaid at Close of Period	$ 214,000
Borrower P [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Fairhaven, MA
Interest Rate	9.00%
Final Maturity Date	2020-09
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	458,000
Amount of Principal Unpaid at Close of Period	$ 427,000
Borrower Q [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Baldwin, NY
Interest Rate	9.00%
Final Maturity Date	2020-09
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	300,000
Amount of Principal Unpaid at Close of Period	$ 282,000
Borrower R [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Leicester, MA
Interest Rate	9.00%
Final Maturity Date	2020-10
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	268,000
Amount of Principal Unpaid at Close of Period	$ 251,000
Borrower S [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Valley Cottage, NY
Interest Rate	9.00%
Final Maturity Date	2020-10
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	431,000
Amount of Principal Unpaid at Close of Period	$ 403,000
Borrower T [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Ephrata, PA
Interest Rate	9.00%
Final Maturity Date	2020-10
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	265,000
Amount of Principal Unpaid at Close of Period	$ 247,000
Borrower U [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Piscataway, NJ
Interest Rate	9.00%
Final Maturity Date	2020-11
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	121,000
Amount of Principal Unpaid at Close of Period	$ 103,000
Borrower V [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Westfield, MA
Interest Rate	9.00%
Final Maturity Date	2020-11
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	165,000
Amount of Principal Unpaid at Close of Period	$ 155,000
Borrower W [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Wilmington, DE
Interest Rate	9.00%
Final Maturity Date	2020-11
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	84,000
Amount of Principal Unpaid at Close of Period	$ 79,000
Borrower X [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Gettysburg, PA
Interest Rate	9.00%
Final Maturity Date	2020-11
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	69,000
Amount of Principal Unpaid at Close of Period	$ 64,000
Borrower Y [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Kenmore, NY
Interest Rate	9.00%
Final Maturity Date	2020-12
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	74,000
Amount of Principal Unpaid at Close of Period	$ 70,000
Borrower Z [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Stafford Springs, CT
Interest Rate	9.00%
Final Maturity Date	2021-01
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	232,000
Amount of Principal Unpaid at Close of Period	$ 218,000
Borrower AA [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Latham, NY
Interest Rate	9.00%
Final Maturity Date	2021-01
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	169,000
Amount of Principal Unpaid at Close of Period	$ 159,000
Borrower AB [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Magnolia, NJ
Interest Rate	9.00%
Final Maturity Date	2020-06
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	53,000
Amount of Principal Unpaid at Close of Period	$ 49,000
Borrower AC [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Colonia, NJ
Interest Rate	9.00%
Final Maturity Date	2020-07
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	320,000
Amount of Principal Unpaid at Close of Period	$ 297,000
Borrower AD [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Jersey City, NJ
Interest Rate	9.00%
Final Maturity Date	2018-07
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	500,000
Amount of Principal Unpaid at Close of Period	$ 464,000
Borrower AE [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Elmont, NY
Interest Rate	9.00%
Final Maturity Date	2021-10
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	450,000
Amount of Principal Unpaid at Close of Period	$ 384,000
Borrower AF [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Leola, PA
Interest Rate	9.00%
Final Maturity Date	2020-03
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	220,000
Amount of Principal Unpaid at Close of Period	$ 202,000
Borrower AG [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Lititz/Rothsville, PA
Interest Rate	9.00%
Final Maturity Date	2020-03
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	180,000
Amount of Principal Unpaid at Close of Period	$ 166,000
Borrower AH [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Bayonne, NJ
Interest Rate	9.00%
Final Maturity Date	2020-03
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	308,000
Amount of Principal Unpaid at Close of Period	$ 283,000
Borrower AI [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Ballston, NY
Interest Rate	9.00%
Final Maturity Date	2020-05
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	225,000
Amount of Principal Unpaid at Close of Period	$ 208,000
Borrower AJ [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Waterbury, CT
Interest Rate	9.00%
Final Maturity Date	2021-02
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	171,000
Amount of Principal Unpaid at Close of Period	$ 161,000
Borrower AK [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	White Plains, NY
Interest Rate	9.00%
Final Maturity Date	2021-02
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	444,000
Amount of Principal Unpaid at Close of Period	$ 418,000
Borrower AL [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Scarsdale, NY
Interest Rate	9.00%
Final Maturity Date	2025-11
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	337,000
Amount of Principal Unpaid at Close of Period	$ 317,000
Borrower AM [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	York, PA
Interest Rate	9.00%
Final Maturity Date	2021-02
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	102,000
Amount of Principal Unpaid at Close of Period	$ 96,000
Borrower AN [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Bristol, CT
Interest Rate	9.00%
Final Maturity Date	2021-03
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	230,000
Amount of Principal Unpaid at Close of Period	$ 217,000
Borrower AO [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Belleville, NJ
Interest Rate	9.00%
Final Maturity Date	2021-03
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	315,000
Amount of Principal Unpaid at Close of Period	$ 297,000
Borrower AP [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Southbridge, MA
Interest Rate	9.00%
Final Maturity Date	2021-03
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	300,000
Amount of Principal Unpaid at Close of Period	$ 283,000
Borrower AQ [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Ridgefield, NJ
Interest Rate	9.00%
Final Maturity Date	2021-04
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	172,000
Amount of Principal Unpaid at Close of Period	$ 163,000
Borrower AR [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Glenville, NY
Interest Rate	9.00%
Final Maturity Date	2021-04
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	325,000
Amount of Principal Unpaid at Close of Period	$ 308,000
Borrower AS [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Great Barrington, MA
Interest Rate	9.00%
Final Maturity Date	2021-04
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	58,000
Amount of Principal Unpaid at Close of Period	$ 55,000
Borrower AT [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Rockland, MA
Interest Rate	9.00%
Final Maturity Date	2021-04
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	134,000
Amount of Principal Unpaid at Close of Period	$ 127,000
Borrower AU [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Williamstown, NJ
Interest Rate	9.00%
Final Maturity Date	2021-04
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	42,000
Amount of Principal Unpaid at Close of Period	$ 40,000
Borrower AV [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Belford, NJ
Interest Rate	9.00%
Final Maturity Date	2021-04
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	134,000
Amount of Principal Unpaid at Close of Period	$ 127,000
Borrower AW [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Swedesboro, NJ
Interest Rate	9.00%
Final Maturity Date	2021-04
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	77,000
Amount of Principal Unpaid at Close of Period	$ 72,000
Borrower AX [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Hatboro, PA
Interest Rate	9.00%
Final Maturity Date	2021-04
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	84,000
Amount of Principal Unpaid at Close of Period	$ 80,000
Borrower AY [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Middlesex, NJ
Interest Rate	9.00%
Final Maturity Date	2021-05
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	255,000
Amount of Principal Unpaid at Close of Period	$ 242,000
Borrower AZ [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Coxsackie, NY
Interest Rate	9.00%
Final Maturity Date	2021-07
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	153,000
Amount of Principal Unpaid at Close of Period	$ 146,000
Borrower BA [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Newburgh, NY
Interest Rate	9.00%
Final Maturity Date	2021-09
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	394,000
Amount of Principal Unpaid at Close of Period	$ 376,000
Borrower BB [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Providence, RI
Interest Rate	9.00%
Final Maturity Date	2021-09
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	184,000
Amount of Principal Unpaid at Close of Period	$ 175,000
Borrower BC [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Warwick, RI
Interest Rate	9.00%
Final Maturity Date	2021-10
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	357,000
Amount of Principal Unpaid at Close of Period	$ 342,000
Borrower BD [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	New Bedford, MA
Interest Rate	9.00%
Final Maturity Date	2021-10
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	363,000
Amount of Principal Unpaid at Close of Period	$ 347,000
Borrower BE [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Fitchburg, MA
Interest Rate	9.00%
Final Maturity Date	2021-10
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	187,000
Amount of Principal Unpaid at Close of Period	$ 179,000
Borrower BF [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Queensbury, NY
Interest Rate	9.00%
Final Maturity Date	2021-11
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	176,000
Amount of Principal Unpaid at Close of Period	$ 169,000
Borrower BG [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Worcester, MA
Interest Rate	9.00%
Final Maturity Date	2021-11
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	237,000
Amount of Principal Unpaid at Close of Period	$ 227,000
Borrower BH [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Westfield, MA
Interest Rate	9.00%
Final Maturity Date	2021-11
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	303,000
Amount of Principal Unpaid at Close of Period	$ 291,000
Borrower BI [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	S. Yarmouth, MA
Interest Rate	9.00%
Final Maturity Date	2022-01
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	275,000
Amount of Principal Unpaid at Close of Period	$ 265,000
Borrower BJ [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Harwich Port, MA
Interest Rate	9.00%
Final Maturity Date	2022-01
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	293,000
Amount of Principal Unpaid at Close of Period	$ 282,000
Borrower BK [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Nyack, NY
Interest Rate	9.00%
Final Maturity Date	2022-09
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	253,000
Amount of Principal Unpaid at Close of Period	$ 248,000
Borrower BL [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Norwalk, CT
Interest Rate	9.00%
Final Maturity Date	2022-04
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	319,000
Amount of Principal Unpaid at Close of Period	$ 308,000
Borrower BM [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Hadley, MA
Interest Rate	9.00%
Final Maturity Date	2022-07
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	78,000
Amount of Principal Unpaid at Close of Period	$ 75,000
Borrower BN [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Clinton, MA
Interest Rate	9.00%
Final Maturity Date	2022-03
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	158,000
Amount of Principal Unpaid at Close of Period	$ 140,000
Borrower BO [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Worcester, MA
Interest Rate	9.00%
Final Maturity Date	2022-02
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	210,000
Amount of Principal Unpaid at Close of Period	$ 202,000
Borrower BP [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Pelham, NH
Interest Rate	9.00%
Final Maturity Date	2023-01
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	73,000
Amount of Principal Unpaid at Close of Period	$ 71,000
Borrower BQ [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Brewster, NY
Interest Rate	9.00%
Final Maturity Date	2022-10
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	554,000
Amount of Principal Unpaid at Close of Period	$ 542,000
Borrower BR [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Brewster, NY
Interest Rate	9.00%
Final Maturity Date	2022-08
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	333,000
Amount of Principal Unpaid at Close of Period	$ 324,000
Borrower BS [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Cranston, RI
Interest Rate	9.00%
Final Maturity Date	2022-08
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	153,000
Amount of Principal Unpaid at Close of Period	$ 149,000
Borrower BT [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Pawtucket, RI
Interest Rate	9.00%
Final Maturity Date	2023-01
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	31,000
Amount of Principal Unpaid at Close of Period	$ 30,000
Borrower BU [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	E. Providence, RI
Interest Rate	9.00%
Final Maturity Date	2022-02
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	186,000
Amount of Principal Unpaid at Close of Period	$ 179,000
Borrower BV [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	McConnellsburg, PA
Interest Rate	9.00%
Final Maturity Date	2023-01
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	38,000
Amount of Principal Unpaid at Close of Period	$ 38,000
Borrower BW [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Billerica, MA
Interest Rate	9.00%
Final Maturity Date	2023-03
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	98,000
Amount of Principal Unpaid at Close of Period	$ 96,000
Borrower BX [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Oxford, MA
Interest Rate	9.00%
Final Maturity Date	2023-03
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	86,000
Amount of Principal Unpaid at Close of Period	$ 84,000
Borrower BY [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Colonie, NY
Interest Rate	9.00%
Final Maturity Date	2023-08
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	143,000
Amount of Principal Unpaid at Close of Period	$ 142,000
Borrower BZ [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Malta, NY
Interest Rate	9.00%
Final Maturity Date	2023-03
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	572,000
Amount of Principal Unpaid at Close of Period	$ 564,000
Borrower CA [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Cairo, NY
Interest Rate	9.00%
Final Maturity Date	2023-08
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	113,000
Amount of Principal Unpaid at Close of Period	$ 112,000
Borrower CB [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Central Islip, NY
Interest Rate	9.00%
Final Maturity Date	2023-06
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	780,000
Amount of Principal Unpaid at Close of Period	$ 773,000
Borrower CC [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Seller financing
Locations	Pottsville, PA
Interest Rate	9.00%
Final Maturity Date	2023-03
Periodic Payment Terms	P & I
Prior Liens	$ 0
Face Value at Inception	23,000
Amount of Principal Unpaid at Close of Period	23,000
Mortgage Loans [Member]
Mortgage Loans on Real Estate [Line Items]
Prior Liens	0
Face Value at Inception	20,089,000
Amount of Principal Unpaid at Close of Period	$ 18,017,000
Note Receivable On Mortgage Loans [Member]
Mortgage Loans on Real Estate [Line Items]
Description	Purchase/leaseback
Locations	Various-NY
Interest Rate	9.50%
Final Maturity Date	2021-01
Periodic Payment Terms	I
Prior Liens	$ 0
Face Value at Inception	18,400,000
Amount of Principal Unpaid at Close of Period	$ 14,720,000

Schedule IV - Changes in Carryi

Schedule IV - Changes in Carrying Amount of Mortgage Loans (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Mortgage Loans on Real Estate [Abstract]
Beginning balance	$ 48,455	$ 34,226	$ 28,793
New mortgage loans	1,814	17,876	8,278
Loan repayments	(16,714)	(2,883)	(2,294)
Collection of principal	(818)	(764)	(489)
Write-off of loan balance			(62)
Ending balance	$ 32,737	$ 48,455	$ 34,226