Notes And Other Receivables Notes and Other Receivables, Installment notes receivable on manufactured homes - Narrative (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts and Notes Receivable, Net	$ 110,499	$ 81,179
Installment notes receivable on manufactured homes, net [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Allowance	$ 200
Receivable with Imputed Interest, Effective Yield (Interest Rate)	8.20%	8.30%
Receivable With Imputed Interest, Term	16 years 8 months 12 days	16 years
Carrying Value [Member] | Installment notes receivable on manufactured homes, net [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts and Notes Receivable, Net		$ 59,320