Loans (Activity Related To Accretable Yield Of Loans Acquired With Evidence Of Credit Quality Deterioration Since Origination) (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Certain Loans Acquired In Transfer Not Accounted fo as Debt Securities, Accretable Yield, To Be Amortized To Indem Asset	$ 28,100,000
Bank Acquisitions [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Accretable yield, beginning balance	107,655,000		143,224,000
Acquisitions	0		(78,000)
Accretable yield amortized to interest income	(7,770,000)		(9,577,000)
Accretable yield amortized to indemnification asset	(5,648,000)	[1]	(8,706,000)	[1]
Reclassification from non-accretable difference	8,580,000	[2]	5,412,000	[2]
(Decreases) increases in interest cash flows due to payments and changes in interest rates	(5,143,000)		(8,550,000)
Accretable yield, ending balance	97,674,000	[3]	121,725,000	[3]
Life Insurance Premium Finance Loans [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Accretable yield, beginning balance	8,254,000		13,055,000
Acquisitions	0		0
Accretable yield amortized to interest income	(1,771,000)		(2,019,000)
Accretable yield amortized to indemnification asset	0	[1]	0	[1]
Reclassification from non-accretable difference	0	[2]	0	[2]
(Decreases) increases in interest cash flows due to payments and changes in interest rates	78,000		182,000
Accretable yield, ending balance	$ 6,561,000	[3]	$ 11,218,000	[3]

[1] Represents the portion of the current period accreted yield, resulting from lower expected losses, applied to reduce the loss share indemnification asset.

[2] Reclassification is the result of subsequent increases in expected principal cash flows.

[3] As of March 31, 2014, the Company estimates that the remaining accretable yield balance to be amortized to the indemnification asset for the bank acquisitions is $28.1 million. The remainder of the accretable yield related to bank acquisitions is expected to be amortized to interest income.