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Lease Agreements - Additional Information (Detail) | 12 Months Ended
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Dec. 31, 2013 integer
Schedule of Operating Leases [Line Items] |
Operating Lease terms | The leases entered into between the customer and us for the rental of a Site are generally month-to-month or for a period of one to ten years, renewable upon the consent of the parties or, in some instances, as provided by statute.
Number of properties where non-cancelable long-term leases are in effect | 17
Minimum |
Schedule of Operating Leases [Line Items] |
Operating Lease, expiration period year | 1 year
Maximum |
Schedule of Operating Leases [Line Items] |
Operating Lease, expiration period year | 10 years

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- Definition Lease Expiration Period + References No definition available. + Details
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- Definition The number of leased properties with a non-cancelable long term lease. + References No definition available. + Details
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- Details
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- Definition A general description of the nature of the existing leasing arrangements of a lessee for all operating leases including, but not limited to: (1) rental escalation clauses; (2) renewal or purchase options; (3) guarantees or indemnities, if any, (4) restrictions imposed by lease arrangements; (5) unusual provisions or conditions; (6) contingent rentals, if any; and (7) lease expiration dates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6452660&loc=d3e36991-112694 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 1) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697 + Details
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