Gain on Sale of Idle Property, Plant and Equipment (Details) (USD $)	9 Months Ended	3 Months Ended
Feb. 28, 2013	Feb. 29, 2012	Nov. 30, 2012 Recreational Vehicles [Member] Facilities	Nov. 30, 2012 Hemet, California [Member] Recreational Vehicles [Member]	Nov. 30, 2011 Ocala Florida [Member] Recreational Vehicles [Member]	Nov. 30, 2011 Ephrata Pennsylvania [Member] Recreational Vehicles [Member]	Feb. 28, 2013 Subsequent Event [Member] Mocksville, North Carolina [Member] Manufactured Housing Facility [Member]
Gain on Sale of Idle Property Plant and Equipment (Textual) [Abstract]
Number of idle facilities sold			2
Gain on the sale of idle facilities	$ 1,411,000	$ 2,500,000		$ 1,411,000	$ 1,114,000	$ 1,386,000	$ 225,000

The difference between the sale price or salvage price and the book value of a property, plant, and equipment asset that was sold or retired during the reporting period. This element refers to the gain (loss).

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 28

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: 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=6943989&loc=d3e3602-108585

Name:	us-gaap_GainLossOnSaleOfPropertyPlantEquipment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration