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Intangible Assets and Below Market Lease Liabilities (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Mar. 31, 2014 | Mar. 31, 2013 | Dec. 31, 2013
Intangible assets and below market lease liabilities, net [Abstract] |  |  |
Deferred financing and leasing costs, accumulated amortization | $ (100,639) |  | $ (92,220)
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets | 218,831 |  | 222,211
Deferred Financing Costs [Member] |  |  |
Intangible assets and below market lease liabilities, net [Abstract] |  |  |
Deferred financing and leasing costs, gross | 17,329 |  | 17,363
Deferred financing and leasing costs, accumulated amortization | (5,789) |  | (5,204)
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets | 11,540 |  | 12,159
Amortization of intangible assets and below market lease liabilities [Abstract] |  |  |
Amortization of intangible assets | 652 | 949 |
Deferred Leasing Costs [Member] |  |  |
Intangible assets and below market lease liabilities, net [Abstract] |  |  |
Deferred financing and leasing costs, gross | 302,141 |  | 297,068
Deferred financing and leasing costs, accumulated amortization | (94,850) |  | (87,016)
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets | 207,291 |  | 210,052
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 | 179,424 |  |
Amortization of intangible assets and below market lease liabilities [Abstract] |  |  |
Amortization of intangible assets | 9,928 | 8,075 |
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 | 7,040 |  |
Amortization of intangible assets and below market lease liabilities [Abstract] |  |  |
Amortization of intangible assets | 351 | 376 |
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 | 17,113 |  |
Amortization of intangible assets and below market lease liabilities [Abstract] |  |  |
Amortization of intangible assets | 1,116 | 466 |
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 | 3,714 |  |
Amortization of intangible assets and below market lease liabilities [Abstract] |  |  |
Amortization of intangible assets | 137 | 137 |
Acquisition-Related Below Market Lease Liabilities [Member] |  |  |
Intangible assets and below market lease liabilities, net [Abstract] |  |  |
Acquisition-related below market lease liabilities, gross | 54,996 |  | 55,323
Acquisition-related below market lease liabilities, accumulated amortization | (9,673) |  | (8,478)
Acquisition-related below market lease liabilities, net | 45,323 |  | 46,845
Amortization of intangible assets and below market lease liabilities [Abstract] |  |  |
Amortization of acquisition-related below market lease liabilities | $ (1,522) | $ (1,122) |

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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=31042434&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=26713463&loc=d3e16323-109275 + 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=26713463&loc=d3e16323-109275 + Details
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