Reportable Segments - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified

3 Months Ended

9 Months Ended

Sep. 30, 2012

Sep. 30, 2011

Sep. 30, 2012

Sep. 30, 2011

Segment Reporting Disclosure [Line Items]

Gross revenue from home sales

$ 1,861

$ 1,636

$ 5,881

$ 4,281

Major customers description

All revenues are from external customers and there is no customer who contributed 10% or more of the Company’s total revenues during the nine months ended September 30, 2012 and 2011.

Maximum

Segment Reporting Disclosure [Line Items]

Number of reportable segments

2

Home Sales And Rentals [Member]

Segment Reporting Disclosure [Line Items]

Gross revenue from home sales

1,861

1,636

5,881

4,281

Site rental income

$ 9,316

$ 6,174

$ 26,126

$ 15,988