Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Pre-Tax Amount [Member]
Schedule Of Other Comprehesive Income [Line Items]
Unrealized Net Holding Loss On Other-than-Temporarily Impaired Securities Due To Factors Other Than Credit			$ (130)
Unrealized Net Holding Gain (Loss) On All Other Securitiies	(14,761)	2,188	11,187
Reclassification Adjustment For Net Gain On Securities Recognized In Net Earnings	(651)	(679)	(878)
Other Comprehensive Income (Loss)	(15,412)	1,509	10,179
Tax Benefit (Expense) [Member]
Schedule Of Other Comprehesive Income [Line Items]
Unrealized Net Holding Loss On Other-than-Temporarily Impaired Securities Due To Factors Other Than Credit			48
Unrealized Net Holding Gain (Loss) On All Other Securitiies	5,446	(809)	(4,128)
Reclassification Adjustment For Net Gain On Securities Recognized In Net Earnings	240	252	324
Other Comprehensive Income (Loss)	5,686	(557)	(3,756)
Net Of Tax Amount [Member]
Schedule Of Other Comprehesive Income [Line Items]
Unrealized Net Holding Loss On Other-than-Temporarily Impaired Securities Due To Factors Other Than Credit			(82)
Unrealized Net Holding Gain (Loss) On All Other Securitiies	(9,315)	1,379	7,059
Reclassification Adjustment For Net Gain On Securities Recognized In Net Earnings	(411)	(427)	(554)
Other Comprehensive Income (Loss)	$ (9,726)	$ 952	$ 6,423