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Intangible Assets and Below Market Liabilities (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Mar. 31, 2012 years | Mar. 31, 2011 | Dec. 31, 2011
Intangible assets and below market liabilities, net [Abstract] |  |  |
Deferred financing and leasing costs, accumulated amortization | $ (67,662) |  | $ (63,059)
Deferred financing and leasing costs, net | 129,204 |  | 128,390
Deferred Financing Costs [Member] |  |  |
Intangible assets and below market liabilities, net [Abstract] |  |  |
Deferred financing and leasing costs, gross | 20,251 |  | 18,044
Deferred financing and leasing costs, accumulated amortization | (6,675) |  | (5,797)
Deferred financing and leasing costs, net | 13,576 |  | 12,247
Amortization of intangible assets and below market liabilities [Abstract] |  |  |
Amortization of intangible assets | 902 | 821 |
Scheduled future amortization of intangible assets and below market liabilities [Abstract] |  |  |
April 1, 2012 through December 31, 2012 | 2,835 |  |
2013 | 3,306 |  |
2014 | 3,004 |  |
2015 | 2,391 |  |
2016 | 1,020 |  |
Thereafter | 1,020 |  |
Total future amortization of intangible assets and below market liabilities | 13,576 |  |
Weighted average remaining amortization periods for intangible assets and below market liabilities [Abstract] |  |  |
Finite-lived intangible assets, average useful life (in years) | 4.0 |  |
Deferred Leasing Costs [Member] |  |  |
Intangible assets and below market liabilities, net [Abstract] |  |  |
Deferred financing and leasing costs, gross | 176,615 |  | 173,405
Deferred financing and leasing costs, accumulated amortization | (60,987) |  | (57,262)
Deferred financing and leasing costs, net | 115,628 |  | 116,143
Amortization of intangible assets and below market liabilities [Abstract] |  |  |
Amortization of intangible assets | 6,440 | 4,356 |
Scheduled future amortization of intangible assets and below market liabilities [Abstract] |  |  |
April 1, 2012 through December 31, 2012 | 19,281 |  |
2013 | 21,690 |  |
2014 | 17,497 |  |
2015 | 13,476 |  |
2016 | 10,175 |  |
Thereafter | 23,172 |  |
Total future amortization of intangible assets and below market liabilities | 105,291 |  |
Weighted average remaining amortization periods for intangible assets and below market liabilities [Abstract] |  |  |
Finite-lived intangible assets, average useful life (in years) | 6.2 |  |
Deferred Lease Incentives [Member] |  |  |
Amortization of intangible assets and below market liabilities [Abstract] |  |  |
Amortization of intangible assets | 343 | 338 |
Scheduled future amortization of intangible assets and below market liabilities [Abstract] |  |  |
April 1, 2012 through December 31, 2012 | 981 |  |
2013 | 1,154 |  |
2014 | 992 |  |
2015 | 771 |  |
2016 | 600 |  |
Thereafter | 2,341 |  |
Total future amortization of intangible assets and below market liabilities | 6,839 |  |
Weighted average remaining amortization periods for intangible assets and below market liabilities [Abstract] |  |  |
Finite-lived intangible assets, average useful life (in years) | 8.0 |  |
Acquisition-Related Intangible Assets [Member] |  |  |
Amortization of intangible assets and below market liabilities [Abstract] |  |  |
Amortization of intangible assets | 270 | 186 |
Scheduled future amortization of intangible assets and below market liabilities [Abstract] |  |  |
April 1, 2012 through December 31, 2012 | 788 |  |
2013 | 820 |  |
2014 | 526 |  |
2015 | 341 |  |
2016 | 281 |  |
Thereafter | 742 |  |
Total future amortization of intangible assets and below market liabilities | 3,498 |  |
Weighted average remaining amortization periods for intangible assets and below market liabilities [Abstract] |  |  |
Finite-lived intangible assets, average useful life (in years) | 5.7 |  |
Acquisition-Related Below Market Liabilities [Member] |  |  |
Intangible assets and below market liabilities, net [Abstract] |  |  |
Acquisition-related below market liabilities, gross | 16,390 |  | 16,441
Acquisiton-related below market liabilities, accumulated amortization | (1,457) |  | (971)
Acquisition-related below market liabilities, net | 14,933 |  | 15,470
Amortization of intangible assets and below market liabilities [Abstract] |  |  |
Amortization of acquisition-related below market liabilities | (544) | (25) |
Scheduled future amortization of intangible assets and below market liabilities [Abstract] |  |  |
April 1, 2012 through December 31, 2012 | (1,589) |  |
2013 | (2,093) |  |
2014 | (2,019) |  |
2015 | (1,807) |  |
2016 | (1,511) |  |
Thereafter | (5,914) |  |
Total future amortization of intangible assets and below market liabilities | $ (14,933) |  |
Weighted average remaining amortization periods for intangible assets and below market liabilities [Abstract] |  |  |
Finite-lived below market liabilities, average useful life (in years) | 8.4 |  |

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- Definition The accumulated amount of amortization of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company. + References Reference 1: 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. Reference 2: 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=6905858&loc=d3e16323-109275 + Details
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- Definition Aggregate amount of intangible asset amortization recognized as expense during the period. + References Reference 1: 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. Reference 2: 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=6905858&loc=d3e16323-109275 + Details
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- Definition The average useful life of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar either by their nature or by their use in the operations of a company. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16265-109275 + Details
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- Definition The aggregate estimated amortization expense for succeeding fiscal years for intangible assets subject to amortization. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(3) -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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16323-109275 + Details
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- Definition Sum of the gross carrying amounts before accumulated amortization as of the balance sheet date of all intangible assets having statutory or estimated useful lives. The aggregate gross carrying amount (including any previously recognized impairment charges) of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company. + References Reference 1: 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. Reference 2: 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=6905858&loc=d3e16323-109275 + Details
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- Definition The aggregate sum of gross carrying value of a major finite-lived intangible asset class, less accumulated amortization and any impairment charges. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company. + References Reference 1: 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. Reference 2: 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=6905858&loc=d3e16323-109275 + Details
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- Definition The amount of amortization expense expected to be recognized during year four of the five succeeding fiscal years. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(3) -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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16323-109275 + Details
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