Securities (Schedule of Unrealized Loss on Investments, AFS) (Details) (Asset-backed securities issued by GSEs [Member], Available-For-Sale Securities [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Asset-backed securities issued by GSEs [Member] | Available-For-Sale Securities [Member]
Less than 12 months, fair value		$ 294
More than 12 months, fair value	23,610	26,856
Fair value	23,610	27,150
Less than 12 months, unrealized loss
More than 12 months, unrealized loss	439	830
Unrealized loss	$ 439	$ 830