Derivative Financial Instruments (Derivatives Used To Hedge Changes In Fair Value Attributable To Interest Rate Risk) (Detail) (Fair Value Hedging [Member], Designated as Hedging Instrument [Member], Interest Rate Contract [Member], USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Fair Value Hedging [Member] | Designated as Hedging Instrument [Member] | Interest Rate Contract [Member]
Derivative [Line Items]
Amount of Gain or (Loss) Recognized in Income on Derivative	$ (14,000)	$ (229,000)	$ 42,000	$ (432,000)
Amount of Gain or (Loss) Recognized in Income on Hedged Item	14,000	266,000	(33,000)	482,000
Income Statement Gain/(Loss) due to Hedge Ineffectiveness	$ 0	$ 37,000	$ 9,000	$ 50,000