Notes And Other Receivables Installment notes receivable on manufactured homes - Narrative (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2014 Rate	Dec. 31, 2013 Rate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts and Notes Receivable, Net	$ 168,341	$ 164,685
Installment notes receivable on manufactured homes, net [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Allowance	100	100
Receivable with Imputed Interest, Effective Yield (Interest Rate)	8.70%	8.90%
Receivable With Imputed Interest, Term	11 years 7 months 6 days	11 years 10 months 24 days
Carrying Value [Member] | Installment notes receivable on manufactured homes, net [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts and Notes Receivable, Net	$ 21,684	$ 25,471