Investment Securities, at Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Fair Value	$ 55,802	$ 58,646
Commercial mortgage backed securities, maturities, fair value
Investment securities, at fair value	55,802	58,646
Commercial Mortgage Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	52,930	56,459
Gross Unrealized Gains	3,253	2,207
Gross Unrealized Losses	(381)	(20)
Fair Value	55,802	58,646
Commercial mortgage backed securities, maturities, amortized cost basis
Due within one year	0
Due after one year through five years	5,312
Due after five years through 10 years	30,531
Due after 10 years	17,087
Amortized cost basis, total	52,930
Commercial mortgage backed securities, maturities, fair value
Due within one year	0
Due after one year through five years	5,331
Due after five years through 10 years	32,630
Due after 10 years	17,841
Investment securities, at fair value	$ 55,802	$ 58,646