Investment Securities, at Fair Value (Scheduled Maturity of CMBS) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Fair Value
Total	$ 48,347	$ 53,304
CMBS [Member]
Amortized Cost
Due within one year	0
Due after one year through five years	21,578
Due after five years through 10 years	12,616
Due after 10 years	14,534
Amortized Cost	48,728	52,115
Fair Value
Due within one year	0
Due after one year through five years	22,463
Due after five years through 10 years	10,607
Due after 10 years	15,277
Total	$ 48,347	$ 53,304