Other Comprehensive Income (Loss) (Classifications out of accumulated other comprehensive income) (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
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income Tax Expense	$ 3,438	$ 2,969	$ 8,967	$ 8,712
Amount Reclassified From Accumulated Other Comprehensive Income (Loss)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total Reclassifications for the Period	(369)	(239)	(675)	(1,071)
Unrealized Gains and Losses on Available-for-Sale Securities | Amount Reclassified From Accumulated Other Comprehensive Income (Loss)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net (Gain) Loss on Securities	(567)	(428)	(1,039)	(1,508)
Income Tax Expense	198	189	364	437
Net of Tax	$ (369)	$ (239)	$ (675)	$ (1,071)