Derivative Financial Instruments 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 $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
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	$ 16	$ (14)	$ (27)	$ 42
Amount of Gain or (Loss) Recognized in Income on Hedged Item	(16)	14	24	(33)
Income Statement Gain/(Loss) due to Hedge Ineffectiveness	$ 0	$ 0	$ (3)	$ 9