Other Assets and Other Liabilities (Schedule of Other Liabilities) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($) land_project	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Jun. 30, 2018 USD ($)
Other Significant Noncash Transactions [Line Items]
Other liabilities	$ 143,808	$ 79,015
Accrued expenses	97,007	101,035
Accrued interest payable	42,669	49,933
Intangible liabilities, net	35,108	8,021
Accounts payable, accrued expenses and other liabilities	318,592	238,004
Profit sharing payable	18,500	29,200
Special assessment bond	$ 9,400	6,200
Number Of Land Projects Related To Tax Increment Financing Bonds | land_project	2
Below market lease, accumulated amortization	$ 2,800	7,800
Amortization of below market lease	$ 3,900	1,300	$ 1,100
Below market lease intangible liability, weighted average useful life	22 years 9 months 18 days
Net Lease Venture
Other Significant Noncash Transactions [Line Items]
Intangible liabilities, net				$ 34,300
Assets Held-for-Sale
Other Significant Noncash Transactions [Line Items]
Other liabilities	$ 500	1,600
Accrued expenses	$ 1,900	$ 2,500