Securities (Proceeds from the sales of Available-for-Sale Securities) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Schedule of Investments [Line Items]
Proceeds from Sales and Calls			$ 119,952	$ 92,344
Gross Gains on Sales and Calls	428	598	1,508	692
Available-for-sale Securities [Member]
Schedule of Investments [Line Items]
Proceeds from Sales and Calls	19,231	40,949	119,952	92,344
Gross Gains on Sales and Calls	428	598	1,508	692
Income Taxes on Gross Gains	$ 150	$ 209	$ 528	$ 242