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Acquisitions - Additional Information (Detail) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2011 | Dec. 31, 2013 integer | Dec. 31, 2012 integer | Dec. 31, 2011
Business Acquisition [Line Items] |  |  |  |
Number of acquired site property |  |  | 1,765 | 30,129
Business Acquisition, Purchase Price |  |  | $ 25,000,000 | $ 1,500,000,000
Number of closed acquisition properties |  |  |  | 75
Term loan financing proceeds |  | 0 | 0 | 200,000,000
New mortgage notes payable financing proceeds | 200,000,000 | 375,500,000 | 159,500,000 | 200,000,000
Number of properties used as a pledge |  | 147 | 170 |
Debt, minimum interest rate |  | 3.90% |  | 0.00%
Debt, maximum interest rate |  | 8.90% |  | 0.00%
Amortization of Intangible Assets |  | $ 1,940,000 | $ 45,122,000 | $ 28,479,000
Minimum |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Debt Instrument Maturity Year |  | 2014 |  | 2012
Maximum |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Debt Instrument Maturity Year |  | 2038 |  | 2023
Common Stock |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Stock issued for the acquisition properties, share |  | 0 | 0 | 3,416,552
Series B Subordinated Non-Voting Cumulative Redeemable Preferred Stock |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Stock issued for the acquisition properties, share |  | 0 | 0 | 3,480,000
R V Resort [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Number of acquired portfolio |  |  | 2 |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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