Derivative Financial Instruments (Net Impact On Interest Expense Related To Cash Flow Hedges) (Detail) (Interest Expense [Member], Designated as Hedging Instrument [Member], Cash Flow Hedging [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Derivative [Line Items]
Interest Expense	$ 498	$ 1,393	$ 1,542
Amount Reclassified From AOCI	9,272	7,516	2,727
Federal Home Loan Bank Advances [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Interest Expense	498	1,393	1,542
Amount Reclassified From AOCI	5,956	4,754	1,962
Subordinated Debt [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Interest Expense	0	0	0
Amount Reclassified From AOCI	(3)	(92)	(150)
Repurchase Agreements [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Interest Expense	0	0	0
Amount Reclassified From AOCI	3,319	2,959	1,095
Trust Preferred Securities Pooled Issuers [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Interest Expense	0	0	0
Amount Reclassified From AOCI	$ 0	$ (105)	$ (180)