Investment Securities (Schedule Of Fair Value And Unrealized Losses Of Securities) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Investment Holdings [Line Items]
Available-for-sale Securities, Less than 12 Months, Fair Value	$ 524,324	$ 780,234
Available-for-sale Securities, Less than 12 Months, Unrealized Losses	18,526	5,548
Available-for-sale Securities, 12 Months or Longer, Fair Value	249,727	106,155
Available-for-sale Securities, 12 Months or Longer, Unrealized Losses	12,869	1,077
Available-for-sale Securities, Fair Value	774,051	886,389
Available-for-sale Securities, Unrealized Losses	31,395	6,625
Held-to-maturity Securities, Less than 12 Months, Fair Value	156	0
Held-to-maturity Securities, Less than 12 Months, Unrealized Losses	19	0
Held-to-maturity Securities, 12 Months or Longer, Fair Value	0	48
Held-to-maturity Securities, 12 Months or Longer, Unrealized Losses	0	7
Held-to-maturity Securities, Fair Value	156	48
Held-to-maturity Securities, Unrealized Losses	19	7
U.S. Treasury And Agencies [Member]
Investment Holdings [Line Items]
Available-for-sale Securities, Less than 12 Months, Fair Value	0	0
Available-for-sale Securities, Less than 12 Months, Unrealized Losses	0	0
Available-for-sale Securities, 12 Months or Longer, Fair Value	32	59
Available-for-sale Securities, 12 Months or Longer, Unrealized Losses	1	1
Available-for-sale Securities, Fair Value	32	59
Available-for-sale Securities, Unrealized Losses	1	1
Obligations Of States And Political Subdivisions [Member]
Investment Holdings [Line Items]
Available-for-sale Securities, Less than 12 Months, Fair Value	48,342
Available-for-sale Securities, Less than 12 Months, Unrealized Losses	2,575
Available-for-sale Securities, 12 Months or Longer, Fair Value	0
Available-for-sale Securities, 12 Months or Longer, Unrealized Losses	0
Available-for-sale Securities, Fair Value	48,342
Available-for-sale Securities, Unrealized Losses	2,575
Residential Mortgage-Backed Securities And Collateralized Mortgage Obligations [Member]
Investment Holdings [Line Items]
Available-for-sale Securities, Less than 12 Months, Fair Value	475,982	780,234
Available-for-sale Securities, Less than 12 Months, Unrealized Losses	15,951	5,548
Available-for-sale Securities, 12 Months or Longer, Fair Value	249,695	106,096
Available-for-sale Securities, 12 Months or Longer, Unrealized Losses	12,868	1,076
Available-for-sale Securities, Fair Value	725,677	886,330
Available-for-sale Securities, Unrealized Losses	28,819	6,624
Held-to-maturity Securities, Less than 12 Months, Fair Value	156	0
Held-to-maturity Securities, Less than 12 Months, Unrealized Losses	19	0
Held-to-maturity Securities, 12 Months or Longer, Fair Value	0	48
Held-to-maturity Securities, 12 Months or Longer, Unrealized Losses	0	7
Held-to-maturity Securities, Fair Value	156	48
Held-to-maturity Securities, Unrealized Losses	$ 19	$ 7