Summary of Significant Accounting Policies (Narrative) (Detail) (USD $)			12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Minimum [Member]	Dec. 31, 2013 Maximum [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cash on hand or on deposit required	$ 116,600,000	$ 108,900,000
Cash collateral on deposit		3,400,000
Foreclosed assets	$ 11,900,000	$ 15,500,000
Range of change in fair value of derivative hedging instrument to be considered highly effective			80.00%	125.00%