v2.4.1.9

Significant Accounting Policies (Narrative) (Details) (USD $)	0 Months Ended		3 Months Ended
	Mar. 10, 2015	Dec. 09, 2014	Mar. 31, 2015	Mar. 31, 2014	Mar. 10, 2015	Dec. 31, 2014	Dec. 09, 2014
Significant Accounting Policies [Line Items]
Capitalized development and construction salaries and other related costs			$ 1,300,000	$ 900,000
Construction, tenant improvement, and development in-progress			67,900,000us-gaap_ConstructionInProgressGross			62,800,000us-gaap_ConstructionInProgressGross
Maximum period after cessation of major construction activity that projects are considered complete			1 year
Threshold of investment value for discontinuation of equity method accounting			0
Amortization of deferred financing costs			953,000us-gaap_AmortizationOfFinancingCosts	769,000us-gaap_AmortizationOfFinancingCosts
Write off of unamortized deferred financing costs			0	0
Deferred leasing costs			970,000	1,031,000
Provision or benefit for income taxes			0us-gaap_IncomeTaxExpenseBenefit
Deferred tax asset			15,200,000
General and limited partners common capital account units outstanding	99,955,189	99,950,528			99,955,189		99,950,528
Distributions payable, record date	Apr. 06, 2015	Jan. 06, 2015
Common unit distributions per common unit, declared	$ 0.15	$ 0.15
Distributions payable date	Apr. 14, 2015	Jan. 14, 2015
Restricted stock expense			313,000us-gaap_RestrictedStockExpense	3,387,000us-gaap_RestrictedStockExpense
Difference between other comprehensive income and net income			0	0
Accumulated other comprehensive income			0			0
Executive Officer [Member]
Significant Accounting Policies [Line Items]
Restricted stock expense				$ 3,203,000

Capitalized Development, Construction Salaries And Other Related Expenses

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Difference Between Other Comprehensive Income (Loss) And Net Income (Loss)

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General and limited partners common capital account units outstanding.

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Maximum Period After Cessation Of Major Construction Activity That Projects Are Considered Complete

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Threshold Of Investment Value For Discontinuation Of Equity Method Accounting

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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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.

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Amount of noncash expense included in interest expense to issue debt and obtain financing associated with the related debt instruments. Alternate captions include noncash interest expense.

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Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Cash dividends declared or paid to each outstanding general partnership unit during the reporting period.

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Date the declared dividend will be paid, in CCYY-MM-DD format.

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Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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The noncash expense that represents the cost of restricted stock or unit distributed to employees as compensation.

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Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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