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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, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 | Dec. 31, 2013
Intangible assets and below market lease liabilities, net [Abstract] |  |  |  |  |
Deferred financing and leasing costs, accumulated amortization | $ (102,430) |  | $ (102,430) |  | $ (92,220)
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets | 218,022 |  | 218,022 |  | 222,211
Deferred Financing Costs [Member] |  |  |  |  |
Intangible assets and below market lease liabilities, net [Abstract] |  |  |  |  |
Deferred financing and leasing costs, gross | 19,567 |  | 19,567 |  | 17,363
Deferred financing and leasing costs, accumulated amortization | (6,434) |  | (6,434) |  | (5,204)
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets | 13,133 |  | 13,133 |  | 12,159
Amortization of intangible assets and below market lease liabilities [Abstract] |  |  |  |  |
Amortization of intangible assets | 799 | 948 | 1,451 | 1,897 |
Deferred Leasing Costs [Member] |  |  |  |  |
Intangible assets and below market lease liabilities, net [Abstract] |  |  |  |  |
Deferred financing and leasing costs, gross | 300,885 |  | 300,885 |  | 297,068
Deferred financing and leasing costs, accumulated amortization | (95,996) |  | (95,996) |  | (87,016)
Deferred financing and leasing costs, net/Total scheduled future amortization of intangible assets | 204,889 |  | 204,889 |  | 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 | 178,386 |  | 178,386 |  |
Amortization of intangible assets and below market lease liabilities [Abstract] |  |  |  |  |
Amortization of intangible assets | 10,050 | 7,888 | 19,978 | 15,963 |
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 | 6,929 |  | 6,929 |  |
Amortization of intangible assets and below market lease liabilities [Abstract] |  |  |  |  |
Amortization of intangible assets | 399 | 340 | 750 | 716 |
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 | 15,999 |  | 15,999 |  |
Amortization of intangible assets and below market lease liabilities [Abstract] |  |  |  |  |
Amortization of intangible assets | 1,114 | 484 | 2,230 | 950 |
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 | 3,575 |  | 3,575 |  |
Amortization of intangible assets and below market lease liabilities [Abstract] |  |  |  |  |
Amortization of intangible assets | 139 | 139 | 276 | 276 |
Acquisition-Related Below Market Lease Liabilities [Member] |  |  |  |  |
Intangible assets and below market lease liabilities, net [Abstract] |  |  |  |  |
Acquisition-related below market lease liabilities, gross | 54,903 |  | 54,903 |  | 55,323
Acquisition-related below market lease liabilities, accumulated amortization | (11,080) |  | (11,080) |  | (8,478)
Acquisition-related below market lease liabilities, net | 43,823 |  | 43,823 |  | 46,845
Amortization of intangible assets and below market lease liabilities [Abstract] |  |  |  |  |
Amortization of acquisition-related below market lease liabilities | $ (1,500) | $ (1,031) | $ (3,022) | $ (2,153) |

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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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