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Intangible Assets and Below Market Lease Liabilities (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012 | Dec. 31, 2012
Intangible assets and below market lease liabilities, net [Abstract] |  |  |  |  |
Deferred financing and leasing costs, accumulated amortization | $ (85,548) |  | $ (85,548) |  | $ (76,840)
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets | 181,802 |  | 181,802 |  | 168,019
Acquired above market lease intangible assets | 3,383 |  | 3,383 |  |
Acquired in-place lease intangible assets | 19,180 |  | 19,180 |  |
Assumed below market lease liabilities | (8,582) |  | (8,582) |  |
Deferred Financing Costs [Member] |  |  |  |  |
Intangible assets and below market lease liabilities, net [Abstract] |  |  |  |  |
Deferred financing and leasing costs, gross | 21,368 |  | 21,368 |  | 21,759
Deferred financing and leasing costs, accumulated amortization | (9,528) |  | (9,528) |  | (7,862)
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets | 11,840 |  | 11,840 |  | 13,897
Amortization of intangible assets and below market lease liabilities [Abstract] |  |  |  |  |
Amortization of intangible assets | 948 | 900 | 1,897 | 1,802 |
Deferred Leasing Costs [Member] |  |  |  |  |
Intangible assets and below market lease liabilities, net [Abstract] |  |  |  |  |
Deferred financing and leasing costs, gross | 245,982 |  | 245,982 |  | 223,100
Deferred financing and leasing costs, accumulated amortization | (76,020) |  | (76,020) |  | (68,978)
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets | 169,962 |  | 169,962 |  | 154,122
Deferred Leasing Costs and Acquisition-Related Intangible Assets [Member] |  |  |  |  |
Intangible assets and below market lease liabilities, net [Abstract] |  |  |  |  |
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets | 152,130 |  | 152,130 |  |
Amortization of intangible assets and below market lease liabilities [Abstract] |  |  |  |  |
Amortization of intangible assets | 8,123 | 7,180 | 16,431 | 13,505 |
Lease Incentives [Member] |  |  |  |  |
Intangible assets and below market lease liabilities, net [Abstract] |  |  |  |  |
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets | 6,222 |  | 6,222 |  |
Amortization of intangible assets and below market lease liabilities [Abstract] |  |  |  |  |
Amortization of intangible assets | 344 | 330 | 725 | 664 |
Acquisition-Related Intangible Assets (in Rental and Other Revenues) [Member] |  |  |  |  |
Intangible assets and below market lease liabilities, net [Abstract] |  |  |  |  |
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets | 7,479 |  | 7,479 |  |
Amortization of intangible assets and below market lease liabilities [Abstract] |  |  |  |  |
Amortization of intangible assets | 484 | 324 | 951 | 594 |
Acquisition-Related Intangible Assets (in Rental Property and Other Expenses) [Member] |  |  |  |  |
Intangible assets and below market lease liabilities, net [Abstract] |  |  |  |  |
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets | 4,131 |  | 4,131 |  |
Amortization of intangible assets and below market lease liabilities [Abstract] |  |  |  |  |
Amortization of intangible assets | 139 | 0 | 276 | 0 |
Acquisition-Related Below Market Lease Liabilities [Member] |  |  |  |  |
Intangible assets and below market lease liabilities, net [Abstract] |  |  |  |  |
Acquisition-related below market lease liabilities, gross | 45,415 |  | 45,415 |  | 37,019
Acquisition-related below market lease liabilities, accumulated amortization | (5,350) |  | (5,350) |  | (3,383)
Acquisition-related below market lease liabilities, net | 40,065 |  | 40,065 |  | 33,636
Amortization of intangible assets and below market lease liabilities [Abstract] |  |  |  |  |
Amortization of acquisition-related below market lease liabilities | $ (1,031) | $ (553) | $ (2,153) | $ (1,097) |

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- Definition The accumulated amount of amortization of acquisition-related below market liabilities. + References No definition available. + Details
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- Definition This element represents the gross liabilities before accumulated amortization 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 No definition available. + Details
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- Definition This element represents the liabilities net of accumulated amortization 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 No definition available. + Details
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- Definition Amount of amortization of intangible liabilities for below market leases. + References No definition available. + 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 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://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=6943989&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -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 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(2) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.15) -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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + 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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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