Securities (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds	$ 25,100	$ 0	$ 55,800	$ 166,900
U.S. Government Agency and Government-Sponsored Enterprise Mortgage-Backed Securities and Collateralized Mortgage Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Number Of Securities In Unrealized Loss Position	66		66
Number Of Securities In Continuous Loss Position For Twelve Months or More	43		43
Municipal Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Number Of Securities In Unrealized Loss Position	74		74
Number Of Securities In Continuous Loss Position For Twelve Months or More	56		56
U.S. Government and Government-Sponsored Enterprise Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Number Of Securities In Unrealized Loss Position	29		29
Number Of Securities In Continuous Loss Position For Twelve Months or More	20		20
US Government Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Number Of Securities In Unrealized Loss Position	2		2
Number Of Securities In Continuous Loss Position For Twelve Months or More	2		2
Other Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Number Of Securities In Unrealized Loss Position	2		2
Number Of Securities In Continuous Loss Position For Twelve Months or More	2		2