Investment Securities (Narrative) (Details) - security	3 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Number of securities in unrealized loss position	9	33
Number of securities in unrealized loss position, more than 12 months	3	1
Agency - GSE [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of securities in unrealized loss position	1
Severity of unrealized losses	0.98%
MBS - GSE Residential [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of securities in unrealized loss position	5
Severity of unrealized losses	0.27%
Municipal Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of securities in unrealized loss position	3
Severity of unrealized losses	0.62%