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Summary of Significant Accounting Policies - Additional Information (Detail) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 USD ($) ft² tenant store property shares | Dec. 31, 2015 USD ($) shares | Dec. 31, 2014 USD ($) shares | Dec. 31, 2013 USD ($)
Significant Accounting Policies [Line Items] |  |  |  |
Number of shopping centers | store | 29 |  |  |
Percentage of ownership in operating partnership | 74.30% |  |  |
Interest expense capitalized | $ 2,527,000 | $ 2,166,000 | $ 689,000 |
Depreciation and amortization of deferred leasing costs | 38,755,000 | 37,698,000 | 35,933,000 |
Repairs and maintenance expense | 11,800,000 | 11,600,000 | 11,900,000 |
Deferred leasing costs, net | 25,983,000 | 26,919,000 |  |
Accumulated amortization deferred leasing cost | 30,400,000 | 26,600,000 |  |
Amortization expense deferred leasing cost | 5,700,000 | 5,600,000 | 5,300,000 |
Allowance for doubtful accounts receivables | 1,958,000 | 1,263,000 | 677,000 | $ 572,000
Accounts receivable, net representing rental income accrued | 43,100,000 | 41,400,000 |  |
Allowance for doubtful accounts receivables representing rental income accrued | 500,000 | 500,000 |  |
Real estate held-for-sale | 3,400,000 |  |  |
Real estate, accumulated depreciation | 458,279,000 | 425,370,000 | 396,617,000 | $ 364,663,000
Real estate, costs to sell and liabilities | 200,000 |  |  |
Unamortized deferred debt costs | 7,485,000 | 8,700,000 |  |
Accumulated amortization | 7,300,000 | 6,200,000 |  |
Accrued penalties and interest | 0 | 0 | $ 0 |
Tax basis of the company's real estate investments | $ 1,300,000,000 | $ 1,100,000,000 |  |
Shares issued to directors (in shares) | shares | 251,323 | 117,886 | 172,887 |
Shares issued to directors | $ 1,348,000 | $ 1,176,000 | $ 965,000 |
Director |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Shares credited to deferred fee accounts (in shares) | shares | 246,800 |  |  |
Shares issued to directors (in shares) | shares | 200 | 200 | 200 |
Shares issued to directors | $ 150,100 | $ 143,000 | $ 112,900 |
Property Held-for-sale |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Number of real estate properties | property | 1 |  |  |
Net rentable area (in square feet) | ft² | 197,100 |  |  |
Real estate, accumulated depreciation | $ 7,000,000 |  |  |
Minimum | Building |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful life | 35 years |  |  |
Maximum | Building |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful life | 50 years |  |  |
Maximum | Building Improvements |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful life | 20 years |  |  |
Revenue |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Number of tenants | tenant | 3 |  |  |
Revenue | Minimum |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Percentage of total revenue | 2.50% |  |  |
Revenue | Giant Food |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Percentage of total revenue | 4.30% |  |  |
Number of shopping centers | store | 9 |  |  |
Revenue | Capital One |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Percentage of total revenue | 2.80% |  |  |
Number of shopping centers | store | 20 |  |  |
Revenue | Safeway |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Percentage of total revenue | 2.60% |  |  |
Number of shopping centers | store | 9 |  |  |

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- Definition For an unclassified balance sheet, the amount of fees and other revenue, excluding investment income receivable, earned but not yet received, which were recognized in conformity with revenue recognition criteria based on estimates or specific contractual terms. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition This element represents the amortization of deferred leasing fees incurred by the lessor and amortized over the term of the lease. Such fees represent (a) costs to originate a lease incurred in transactions with independent third parties that (i) result directly from and are essential to acquire that lease and (ii) would not have been incurred had that leasing transaction not occurred and (b) certain costs directly related to specified activities performed by the lessor for that lease. Those activities are: evaluating the prospective lessee's financial condition; evaluating and recording guarantees, collateral, and other security arrangements; negotiating lease terms; preparing and processing lease documents; and closing the transaction. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=6748888&loc=d3e40246-112709 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
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- Definition The aggregate costs of keeping the property in good condition but that do not appreciably prolong the life or increase the value of the property. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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- Definition For an unclassified balance sheet, the accumulated amortization, as of the reporting date, which represents the periodic charge to earnings of initial direct costs which have been deferred and are being allocated over the lease term in proportion to the recognition of rental income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=6748888&loc=d3e40588-112709 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 35 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6453741&loc=d3e40879-112712 + Details
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- Definition This element represents costs incurred by the lessor that are (a) costs to originate a lease incurred in transactions with independent third parties that (i) result directly from and are essential to acquire that lease and (ii) would not have been incurred had that leasing transaction not occurred and (b) certain costs directly related to specified activities performed by the lessor for that lease. Those activities are: evaluating the prospective lessee's financial condition; evaluating and recording guarantees, collateral, and other security arrangements; negotiating lease terms; preparing and processing lease documents; and closing the transaction. This element is net of accumulated amortization. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=6748888&loc=d3e40246-112709 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 35 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6453741&loc=d3e40879-112712 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=6748888&loc=d3e40588-112709 + Details
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- Definition Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055 + Details
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