Mortgage Notes Receivable (Aggregate Principal Payments) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	May. 04, 2016
Subsequent Event [Line Items]
Due within one year	$ 1,024
Due after one year through five years	5,344
Due after five years through 10 years	6,725
Due after 10 years	16,298
Total	$ 29,391
Subsequent Event [Member]
Subsequent Event [Line Items]
Interest scheduled to be capitalized		$ 3,900