Investment Securities (Schedule of Credit-Related Impairment Losses on Securities) (Details) (USD $)	3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2012
Investment Securities [Abstract]
Beginning Balance		$ 3,959,000	$ 3,925,000
Additional credit-related impairment loss on securities for which an other-than-temporary impairment was previously recognized	0	0	31,000
Reductions for securities paid off during the period		0	0
Reductions for securities for which the amount previously recognized in other comprehensive income was recognized in earnings because the Company intends to sell the security		0	0
Ending Balance	$ 3,959,000	$ 3,959,000	$ 3,956,000