Real Estate Joint Ventures - Consolidated Real Estate Joint Ventures (Details) - item			3 Months Ended	6 Months Ended	12 Months Ended
	Jan. 01, 2018	Dec. 31, 2017	Jun. 30, 2018	Jun. 30, 2018	Dec. 31, 2017	Apr. 30, 2017
Pier Park TPS, LLC
Variable interest entity
Variable interest entity, ownership percentage			50.00%
Pier Park Crossings JV
Variable interest entity
Number of units						240
Variable interest entity, ownership percentage				75.00%	75.00%
Windmark
Variable interest entity
Variable interest entity, ownership percentage				49.00%	49.00%
Pier Park North
Variable interest entity
Variable interest entity, ownership percentage				60.00%	60.00%
Artisan Park, L.L.C
Variable interest entity
Variable interest entity, ownership percentage	100.00%	74.00%