Notes And Other Receivables Installment notes receivable on manufactured homes - narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes and other receivables, net	$ 81,179	$ 47,972
Installment notes receivable on manufactured homes, net [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Allowance	$ 200	$ 200
Receivable with Imputed Interest, Effective Yield (Interest Rate)	8.33%	8.60%
Receivable With Imputed Interest, Term	16 years	9 years 11 months 27 days
Installment notes receivable on manufactured homes, net [Member] | Reported Value Measurement [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes and other receivables, net	$ 59,320	$ 20,418