Significant Accounting Policies - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Significant Accounting Policies [Line Items]
Insurance coverage	$ 250,000
Cash balance excess of insured limit	888,000
Assets or liabilities required to be measured at fair value on a recurring basis	0	0
Asset impairment loss	0	0
Amortization of deferred charges	18,000	11,000
Deferred charges amortized next first year	3,000
Average life of membership	12 years
Rental pool distributions	2,400,000	3,000,000
Income tax expense recorded	0
Uncertain income tax positions	0	0
Year under income tax examination		2012	2011	2010
Federal income tax returns period	3 years
Eligibility criteria for employee benefit plan, minimum service period	1 year
Selling and Marketing Expense [Member]
Significant Accounting Policies [Line Items]
Advertising costs	$ 231,000	$ 299,000