Notes Receivable - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net	$ 21,300,000		$ 21,900,000
Home loans repossessed	446,000	599,000
Contract receivables	17,100,000		17,200,000
Contract Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, amortization term	4 years
Provision for uncollectible receivable	300,000		600,000
Contracts Receivable, yield interest at a stated per annum average	16.00%
Chattel Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, stated interest yield per annum	7.80%
Notes Receivable Yield Rate	19.60%
Loans receivable, amortization term	12 years
Notes receivable, allowance	$ 400,000		$ 400,000