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Intangible Assets and Below Market Lease Liabilities (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Intangible assets and below market lease liabilities, net [Abstract] |  |  |
Deferred leasing costs, gross | $ 377,472 | $ 344,548 |
Deferred leasing costs, accumulated amortization | (146,125) | (149,275) |
Deferred leasing costs, net/Total scheduled future amortization of intangible assets | 231,347 | 195,273 |
Acquisition-related below market lease liabilities, gross | 65,971 | 57,955 |
Acquisition-related below market lease liabilities, accumulated amortization | (34,014) | (32,307) |
Acquisition-related below market lease liabilities, net | 31,957 | 25,648 |
Acquired intangible assets (amortized in rental and other revenue) | 2,059 |  |
Acquired intangible assets (amortized in depreciation and amortization) | 35,637 |  |
Assumed below market lease liabilities (amortized in rental and other revenue) | (12,943) |  |
Deferred Leasing Costs and Acquisition-Related Intangible Assets [Member] |  |  |
Intangible assets and below market lease liabilities, net [Abstract] |  |  |
Deferred leasing costs, net/Total scheduled future amortization of intangible assets | 215,435 |  |
Amortization of intangible assets and below market lease liabilities |  |  |
Amortization of intangible assets | 37,386 | 36,486 | $ 41,187
Lease Incentives [Member] |  |  |
Intangible assets and below market lease liabilities, net [Abstract] |  |  |
Deferred leasing costs, net/Total scheduled future amortization of intangible assets | 9,915 |  |
Amortization of intangible assets and below market lease liabilities |  |  |
Amortization of intangible assets | 4,281 | 1,908 | 1,765
Acquisition-Related Intangible Assets (in Rental and Other Revenue) [Member] |  |  |
Intangible assets and below market lease liabilities, net [Abstract] |  |  |
Deferred leasing costs, net/Total scheduled future amortization of intangible assets | 5,487 |  |
Amortization of intangible assets and below market lease liabilities |  |  |
Amortization of intangible assets | 1,290 | 1,677 | 2,921
Acquisition-Related Intangible Assets (in Rental Property and Other Expenses) [Member] |  |  |
Intangible assets and below market lease liabilities, net [Abstract] |  |  |
Deferred leasing costs, net/Total scheduled future amortization of intangible assets | 510 |  |
Amortization of intangible assets and below market lease liabilities |  |  |
Amortization of intangible assets | 557 | 557 | 557
Acquisition-Related Below Market Lease Liabilities [Member] |  |  |
Intangible assets and below market lease liabilities, net [Abstract] |  |  |
Acquisition-related below market lease liabilities, net | 31,957 |  |
Amortization of intangible assets and below market lease liabilities |  |  |
Amortization of acquisition-related below market lease liabilities | $ (6,633) | $ (6,085) | $ (6,415)

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- Definition Amount of amortization of acquired leases acquired as part of a real property acquisition at below market lease rate with a finite life. + References No definition available. + Details
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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- Definition Amount of accumulated amortization of leases acquired as part of a real property acquisition at below market lease rate with a finite life. + References No definition available. + Details
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- Definition Amount before amortization of leases acquired as part of a real property acquisition at below market lease rate with a finite life. + References No definition available. + Details
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- Definition Amount after amortization of leases acquired as part of a real property acquisition at below market lease rate with a finite life. + References No definition available. + Details
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- Definition This element represents the amount of value allocated by a lessor (acquirer) to lease agreements which exist at acquisition of a leased property. Such amount may include the value assigned to existing tenant relationships and excludes the market adjustment component of the value assigned for above or below-market leases acquired. + References No definition available. + Details
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- Definition This element represents the identifiable intangible asset established upon acquisition based on a favorable difference between the terms of an acquired lease and the current market terms for that lease at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.15) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 928 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition This element represents a liability associated with the acquisition of an off-market lease when the terms of the lease are unfavorable to the market terms for the lease at the date of acquisition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.24) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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