Investment in Unconsolidated Entities - Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Unconsolidated Entities Balance Sheets:
Real estate, net	$ 332,344	$ 346,078
Other assets	16,223	16,042
Total assets	348,567	362,120
Notes payable, net	247,749	236,388
Other liabilities	6,735	6,686
Total liabilities	254,484	243,074
Members' equity	94,083	119,046
Total liabilities and members' equity	$ 348,567	$ 362,120