Investment in Unconsolidated Joint Ventures (Other Data) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule of Equity Method Investments [Line Items]
Outstanding Amount of Mortgage Note Payable of Joint Venture	$ 402.0
Fees Earned from Unconsolidated Joint Ventures	$ 6.0	$ 5.4	$ 8.0