Investment Securities (Details 1) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Investments Debt And Equity Securities [Abstract]
Unrealized gains	$ 23			$ 42
Unrealized losses		$ (4)	$ (2)	(1)
Net unrealized (losses) gains	23	(4)	(2)	41
Net realized losses	(36)	(34)	(45)	(71)
Trading securities losses, net	$ (13)	$ (38)	$ (47)	$ (30)