Number of subsidiaries taxed as taxable REIT.

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Operating Loss Carryforwards Expiration Period.

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Percentage of total accounts receivable.

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- Definition

For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 4

-Article 5

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-Subparagraph (SX 210.5-02.4)

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- Definition

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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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards.

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-Publisher FASB

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-Subparagraph (b)

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible state and local operating loss carryforwards.

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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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The sum of the amounts of estimated penalties and interest recognized in the period arising from income tax examinations.

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.

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Summary of Significant Accounting Policies (Additional Information 2) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014 segment entity	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2014
Summary Of Significant Accounting Policies [Line Items]
Aggregate allowance for doubtful accounts	$ 3,700,000	$ 900,000
Outstanding liabilities for the capital leases	13,062,000us-gaap_CapitalLeaseObligations	2,538,000us-gaap_CapitalLeaseObligations
Number of operating segments	1us-gaap_NumberOfOperatingSegments
Number of reportable segments	1us-gaap_NumberOfReportableSegments
Increase in valuation allowance	2,000,000
Valuation allowance	3,395,000	1,365,000	1,871,000
Interest and penalties related to income taxes	0	0	0
Number of subsidiaries taxed as taxable REIT	1
Federal [Member]
Summary Of Significant Accounting Policies [Line Items]
Net operating loss carry forwards related to Federal income taxes	24,100,000
State [Member]
Summary Of Significant Accounting Policies [Line Items]
Net operating loss carry forwards related to State income taxes	20,100,000
Minimum [Member] \| Federal [Member]
Summary Of Significant Accounting Policies [Line Items]
Net operating loss carry forwards, expiration period	15 years
Minimum [Member] \| State [Member]
Summary Of Significant Accounting Policies [Line Items]
Net operating loss carry forwards, expiration period	5 years
Maximum [Member] \| Federal [Member]
Summary Of Significant Accounting Policies [Line Items]
Net operating loss carry forwards, expiration period	20 years
Maximum [Member] \| State [Member]
Summary Of Significant Accounting Policies [Line Items]
Net operating loss carry forwards, expiration period	20 years
Accounts Receivable [Member]
Summary Of Significant Accounting Policies [Line Items]
Aggregate allowance for doubtful accounts		900,000		900,000
Qualitytech, LP [Member]
Summary Of Significant Accounting Policies [Line Items]
Outstanding liabilities for the capital leases	$ 13,062,000	$ 2,538,000
Customer One [Member] \| Rental Revenue [Member] \| Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Percentage of total revenue	9.00%
Customer One [Member] \| Accounts Receivable [Member]
Summary Of Significant Accounting Policies [Line Items]
Percentage of total accounts receivable	32.00%
Customer Two [Member] \| Accounts Receivable [Member]
Summary Of Significant Accounting Policies [Line Items]
Percentage of total accounts receivable	18.00%
Other Customers [Member] \| Rental Revenue [Member] \| Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Percentage of total revenue	5.00%
Five Customers [Member] \| Accounts Receivable [Member] \| Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Percentage of total accounts receivable	5.00%
Five Customers [Member] \| Accounts Receivable [Member] \| Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Percentage of total accounts receivable	62.00%