Mortgage Notes Receivable (Aggregate Principal Payments) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Aug. 02, 2016
Subsequent Event [Line Items]
Due within one year	$ 1,050
Due after one year through five years	5,350
Due after five years through 10 years	6,821
Due after 10 years	15,923
Total	$ 29,144
Subsequent Event [Member]
Subsequent Event [Line Items]
Interest scheduled to be capitalized		$ 3,900