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Nature of Operations, Accounting Policies of Consolidated Financial Statements - Additional Information (Detail) (USD $)
12 Months Ended
May 31, 2014
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]  
Allowance for credit loss of notes receivable $ 0
Impairment of long-lived assets $ 0
Home Sales [Member]
 
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]  
Product warranty 15 months
Recreational Vehicles [Member]
 
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]  
Product warranty 1 year
Building and Improvements [Member] | Minimum [Member]
 
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]  
Estimated useful lives of property, plant and equipment 10 years
Building and Improvements [Member] | Maximum [Member]
 
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]  
Estimated useful lives of property, plant and equipment 30 years
Machinery and Equipment [Member] | Minimum [Member]
 
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]  
Estimated useful lives of property, plant and equipment 5 years
Machinery and Equipment [Member] | Maximum [Member]
 
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]  
Estimated useful lives of property, plant and equipment 8 years