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Discontinued Operations and Assets Held for Sale (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 6 Months Ended | 0 Months Ended | |||||||
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Jun. 30, 2013
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Jun. 30, 2012
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Jun. 30, 2013
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Jun. 30, 2012
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Dec. 31, 2012
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Jun. 30, 2013
Assets Held-for-sale
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Dec. 31, 2012
Assets Held-for-sale
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Jan. 30, 2012
White Marsh Portfolio Disposition Property
Property
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Jul. 24, 2012
July 2012 Portfolio Disposition
Property
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Jun. 30, 2013
Colorado Springs
Assets Held-for-sale
Property
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| Properties | ||||||||||
| Number of properties sold | 5 | 23 | ||||||||
| Number of operating properties classified as held for sale | 16 | |||||||||
| Revenue from real estate operations | $ 5,546 | $ 13,299 | $ 11,265 | $ 28,403 | ||||||
| Property operating expenses | (1,246) | (4,607) | (2,793) | (9,966) | ||||||
| Depreciation and amortization | (69) | (3,371) | (158) | (6,724) | ||||||
| Impairment losses | (7,195) | (2,354) | (9,052) | (13,777) | ||||||
| General, administrative and leasing expenses | 0 | (2) | (1) | (2) | ||||||
| Business development and land carry costs | 0 | (6) | 0 | (24) | ||||||
| Interest expense | (67) | (736) | (131) | (1,980) | ||||||
| Gain on sales of real estate | 0 | (103) | 0 | 4,035 | ||||||
| Loss on early extinguishment of debt | 0 | (2) | 0 | (2) | ||||||
| Discontinued operations | (3,031) | 2,118 | (870) | (37) | ||||||
| Properties, net | 3,211,304 | 3,211,304 | 3,163,044 | 124,299 | 128,740 | |||||
| Deferred rent receivable | 89,811 | 89,811 | 85,802 | 4,763 | 4,068 | |||||
| Intangible assets on real estate acquisitions, net | 68,046 | 68,046 | 75,879 | 4,392 | 4,409 | |||||
| Deferred leasing, net | 3,359 | 2,923 | ||||||||
| Lease incentives | 9,144 | 9,144 | 5,578 | 83 | 89 | |||||
| Assets held for sale | $ 136,896 | $ 136,896 | $ 140,229 | $ 136,896 | $ 140,229 | |||||
| X | ||||||||||
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- Definition
Amount, if any, of gain on sales of real estate allocated to the disposal group, including a component of the entity (discontinued operation), during the reporting period. No definition available.
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- Definition
Disposal Group Including Discontinued Operation Business Development and Land Carry Costs No definition available.
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- Definition
Amount of depreciation and amortization costs attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period. No definition available.
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- Definition
Amount of gain or loss on early extinguishment of debt attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period. No definition available.
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- Definition
Amount of property operating expenses attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period. No definition available.
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- Definition
Disposal Group Including Discontinued Operations, General and Administrative and Leasing Expenses No definition available.
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| X | ||||||||||
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- Definition
Represents the aggregate impairment losses recognized during the period related to properties disposed or expected to be disposed that are included in discontinued operations. No definition available.
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- Definition
Represents the number of operating properties classified as held for sale as of reporting date. No definition available.
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- Definition
Represents the number of real estate properties sold during the period. No definition available.
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- Definition
The aggregate value (measured at the lower of net carrying value or fair value less cost of disposal) for assets of a disposal group, including a component of the entity (discontinued operation), to be sold or that has been disposed of through sale, as of the financial statement date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
This element represents costs incurred by the lessor that are (a) costs to originate a lease incurred in transactions with independent third parties that (i) result directly from and are essential to acquire that lease and (ii) would not have been incurred had that leasing transaction not occurred and (b) certain costs directly related to specified activities performed by the lessor for that lease. Those activities are: evaluating the prospective lessee's financial condition; evaluating and recording guarantees, collateral, and other security arrangements; negotiating lease terms; preparing and processing lease documents; and closing the transaction. This element is net of accumulated amortization. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The cumulative difference between the rental payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense over the term of the leased property, by the lessor or lessee, respectively. Such receivable is reduced by allowances attributable to, for instance, credit risk associated with a lessee. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of interest expense allocated to disposal group, including a discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of sales or other form of revenues attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
This item represents the deferred charge for an incentive or inducement granted by a lessor to a lessee, in order to motivate the lessee to enter the lease agreement, which incentive or inducement is to be recognized as a reduction of rental revenue over the lease term. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of income (loss) from a disposal group, net of income tax before extraordinary items allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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