Loans Held for Investment (Aggregate Principal Payments) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Nov. 04, 2015
Subsequent Event [Line Items]
Due within one year	$ 9,298
Due after one year through five years	12,924
Due after five years through 10 years	6,516
Due after 10 years	17,056
Total	$ 45,794
Subsequent Event [Member]
Subsequent Event [Line Items]
Interest scheduled to be capitalized		$ 4,000