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Significant Accounting Policies (Narrative) (Details) (USD $)
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3 Months Ended | ||||
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Mar. 31, 2012
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Dec. 31, 2011
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Mar. 31, 2011
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Apr. 04, 2012
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Jan. 05, 2012
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| Significant Accounting Policies [Abstract] | |||||
| Rental property in-progress | $ 31,212,000 | $ 37,069,000 | |||
| Amortization of deferred financing costs | 611,000 | 584,000 | |||
| Deferred leasing costs | 1,096,000 | 1,054,000 | |||
| Minimum percentage of REIT taxable income distributed to shareholders | 90.00% | ||||
| Common stock, shares outstanding | 87,811,226 | 87,799,479 | 87,811,690 | 87,800,047 | |
| Common units outstanding | 12,187,122 | 12,197,122 | 12,187,122 | 12,197,122 | |
| Common unit distributions per share | $ 0.45 | $ 0.45 | |||
| Restricted stock expense | $ 814,000 | $ 691,000 | |||
| Common stock dividends and common unit distributions payable, date | Apr. 13, 2012 | Jan. 13, 2012 | |||
| X | ||||||||||
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- Definition
Common Unit Distributions Per Unit Declared No definition available.
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| X | ||||||||||
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- Definition
The number of common units outstanding. No definition available.
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| X | ||||||||||
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- Definition
Minimum percentage of taxable income required to be distributed to shareholders. No definition available.
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
This element represents the amortization of deferred leasing fees incurred by the lessor and amortized over the term of the lease. Such fees represent (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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The component of interest expense comprised of the periodic charge against earnings over the life of the financing arrangement to which such costs relate. Alternate captions include Noncash Interest Expense. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Total number of shares of common stock held by shareholders. May be all or portion of the number of common shares authorized. These shares represent the ownership interest of the common shareholders. Shares outstanding equals shares issued minus shares held in treasury and other adjustments, if any. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Gross amount, at the balance sheet date, of long-lived assets under construction that include construction costs to date on capital projects that have not been completed and assets being constructed that are not ready to be placed into service. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The day, month, and year (YYYY-MM-DD) that the dividend declared as of or prior to the financial reporting date will be paid in the subsequent period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The noncash expense that represents the cost of restricted stock or unit distributed to employees as compensation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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