Loans (Activity Related To Accretable Yield Of Loans Acquired With Evidence Of Credit Quality Deterioration Since Origination) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012		Mar. 31, 2011
Bank Acquisitions [Member]
Loans [Line Items]
Accretable yield, beginning balance	$ 173,120		$ 39,809
Acquisitions	2,288		7,107
Accretable yield amortized to interest income	(14,892)		(7,072)
Accretable yield amortized to indemnification asset	(21,377)	[1]	(7,087)	[1]
Reclassification from non-accretable difference	41,601	[2]	48,844	[2]
Increases in interest cash flows due to payments and changes in interest rates	1,482		9,731
Accretable yield, ending balance	182,222		91,332
Life Insurance Premium Finance Acquisition [Member]
Loans [Line Items]
Accretable yield, beginning balance	18,861		33,315
Acquisitions
Accretable yield amortized to interest income	(3,737)		(9,052)
Accretable yield amortized to indemnification asset		[1]		[1]
Reclassification from non-accretable difference		[2]	184	[2]
Increases in interest cash flows due to payments and changes in interest rates	724		1,096
Accretable yield, ending balance	$ 15,848		$ 25,543

[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.