Financial Instruments with Off-Balance Sheet Risk and Derivatives (Narrative) (Detail) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Financial Instruments With Off- Balance Sheet Risk and Derivatives [Abstract]
Interest Rate Swaps Notional Amount	$ 21.1	$ 46.4
Interest Rate Swap Contract At Fair Value	$ 1.4	$ 1.6