Commitments and Contingencies - Additional Information (Detail) (USD $)	12 Months Ended		12 Months Ended		12 Months Ended			12 Months Ended			12 Months Ended	6 Months Ended	12 Months Ended		12 Months Ended
	Dec. 31, 2012	Aug. 06, 2012	Dec. 31, 2010 Colony Park	Dec. 31, 2010 Colony Park Maximum	Dec. 31, 2011 Membership Class Action	Dec. 31, 2010 Hurricane Claim Litigation	Jun. 22, 2007 Hurricane Claim Litigation	Dec. 31, 2012 Cascade	Dec. 31, 2008 Cascade	Dec. 30, 2008 Cascade	Dec. 31, 2010 Attorney Fees Colony Park	Jun. 30, 2009 Attorney Fees Legal Claim One [Member] Final Resolution in Favor of Company	Dec. 31, 2012 Morgan RV Resorts [Domain] integer	Oct. 09, 2012 Subsequent Event [Member] Utah Utility Class Action [Member]	Dec. 31, 2012 Subsequent Event [Member] Morgan RV Resorts [Domain] integer
Loss Contingencies [Line Items]
Award for costs and attorney fee claimed by the company									$ 7,050,000		$ 2,000,000	$ 2,100,000
Expiration period of Ordinance from June 30, 2009 date of judgment												10 years
Loss Contingency Damages Sought By Plaintiff			6,800,000											1,000,000
Loss awarded to plaintiffs				44,000
Number of plaintiff the jury rendered verdicts			6
Loss Contingency, Number of Plaintiffs			72		2
Number of plaintiffs dismissed and not appealed			3
Number of plaintiffs dismissed			66
Claims filed against Aon							11,000,000
Proceeds from insurance	15,200,000					7,400,000
Loss Contingency, Estimate of Possible Loss		2,400,000
Negotiated Property Sale Price									12,500,000
Earnest Money Deposits										400,000
Compensatory Rate Increase										5.00%
Promissory Note Percentage										50.00%
Proceeds from Legal Settlements								7,600,000
Gain Contingency, Unrecorded Amount										12,150,000
Promisorry Note									$ 30,000,000
Number of Intended Purchase Properties													15
Number of Acquisition Properties Contested													11
Number of Contested Properties Closed															10