BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Real Estate Assets
Land	$ 48,577us-gaap_Land	$ 48,577us-gaap_Land
Buildings and improvements	954,915	914,286
Less: Accumulated depreciation	(192,107)	(180,167)
Total real estate assets	811,385us-gaap_RentalProperties	782,696us-gaap_RentalProperties
Construction in progress	266,234us-gaap_ConstructionInProgressGross	214,719us-gaap_ConstructionInProgressGross
Real Estate Assets, net	1,077,619us-gaap_RealEstateInvestmentPropertyNet	997,415us-gaap_RealEstateInvestmentPropertyNet
Cash and cash equivalents	5,748	10,788
Rents and other receivables, net	16,730us-gaap_AccountsAndNotesReceivableNet	15,579us-gaap_AccountsAndNotesReceivableNet
Acquired intangibles, net	17,262us-gaap_FiniteLivedIntangibleAssetsNet	18,000us-gaap_FiniteLivedIntangibleAssetsNet
Deferred costs, net	37,902	37,058
Prepaid expenses	6,477	3,079
Other assets, net	24,252us-gaap_OtherAssets	24,640us-gaap_OtherAssets
TOTAL ASSETS	1,185,990us-gaap_Assets	1,106,559us-gaap_Assets
LIABILITIES
Mortgage notes payable	86,016us-gaap_LoansPayable	86,600us-gaap_LoansPayable
Unsecured credit facility	140,000us-gaap_UnsecuredDebt	239,838us-gaap_UnsecuredDebt
Senior notes, net of discount	297,791us-gaap_SeniorNotes	297,729us-gaap_SeniorNotes
Capital lease obligations	13,509us-gaap_CapitalLeaseObligations	13,062us-gaap_CapitalLeaseObligations
Accounts payable and accrued liabilities	82,230	64,607
Dividends and distributions payable	13,381	10,705
Advance rents, security deposits and other liabilities	3,439	3,302
Deferred income	11,401us-gaap_DeferredRevenue	10,531us-gaap_DeferredRevenue
TOTAL LIABILITIES	647,767us-gaap_Liabilities	726,374us-gaap_Liabilities
EQUITY
Common stock	348us-gaap_CommonStockValue	294us-gaap_CommonStockValue
Additional paid-in capital	474,185us-gaap_AdditionalPaidInCapital	324,917us-gaap_AdditionalPaidInCapital
Accumulated dividends in excess of earnings	(29,563)	(22,503)
Total stockholders' equity	444,970us-gaap_StockholdersEquity	302,708us-gaap_StockholdersEquity
Noncontrolling interests	93,253us-gaap_MinorityInterest	77,477us-gaap_MinorityInterest
TOTAL EQUITY	538,223	380,185
TOTAL LIABILITIES AND EQUITY	1,185,990	1,106,559
Qualitytech, LP [Member]
Real Estate Assets
Land	48,577	48,577
Buildings and improvements	954,915	914,286
Less: Accumulated depreciation	(192,107)	(180,167)
Total real estate assets	811,385	782,696
Construction in progress	266,234	214,719
Real Estate Assets, net	1,077,619	997,415
Cash and cash equivalents	5,748	10,788
Rents and other receivables, net	16,730	15,579
Acquired intangibles, net	17,262	18,000
Deferred costs, net	37,902	37,058
Prepaid expenses	6,477	3,079
Other assets, net	24,252	24,640
TOTAL ASSETS	1,185,990	1,106,559
LIABILITIES
Mortgage notes payable	86,016	86,600
Unsecured credit facility	140,000	239,838
Senior notes, net of discount	297,791	297,729
Capital lease obligations	13,509	13,062
Accounts payable and accrued liabilities	82,230	64,607
Dividends and distributions payable	13,381	10,705
Advance rents, security deposits and other liabilities	3,439	3,302
Deferred income	11,401	10,531
TOTAL LIABILITIES	647,767	726,374
EQUITY
Partners' capital	538,223	380,185
TOTAL LIABILITIES AND EQUITY	$ 1,185,990	$ 1,106,559

Advance rent security deposits and other liabilities.

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Carrying amount as of the balance sheet date, net of allowance for doubtful accounts, of account and note receivables due from other than related parties.

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Sum of the carrying values as of the balance sheet date of obligations incurred through that date, including liabilities incurred and payable to vendors for goods and services received, taxes, interest, rent and utilities, compensation costs, payroll taxes and fringe benefits (other than pension and postretirement obligations), contractual rights and obligations, and statutory obligations.

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The amount as of the balance sheet date by which cumulative distributions to shareholders (or partners) exceed retained earnings (or accumulated earnings).

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Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock.

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.

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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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The carrying amount of deferred costs.

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Amount of deferred revenue as of balance sheet date. Deferred revenue represents collections of cash or other assets related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

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Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Aggregate of the carrying amounts as of the balance sheet date of investments in building and building improvements.

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Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

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Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.

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Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any.

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Including the current and noncurrent portions, aggregate carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer).

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest).

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The aggregate carrying amounts, as of the balance sheet date, of assets not separately disclosed in the balance sheet.

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The amount of ownership interest of different classes of partners in limited partnership.

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Carrying amount as of the balance sheet date of expenditures made in advance of when the economic benefit of the cost will be realized, and which will be expensed in future periods with the passage of time or when a triggering event occurs.

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The cumulative amount of depreciation for real estate property held for investment purposes.

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