Loans Receivable (Schedule Of FDIC Loss Share Receivable) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Loans Receivable [Line Items]
Balance			$ 591,844
(Amortization) Accretion	28,484	18,315	56,411	40,228
Balance	469,923		469,923
FDIC Loss Share Receivable [Member]
Loans Receivable [Line Items]
Balance			591,844	726,871
Increase due to loan loss provision recorded on FDIC covered loans			10,633	26,706
(Amortization) Accretion			(56,411)	(40,228)
Submission of reimbursable losses to the FDIC			(72,527)	(48,416)
Other			(3,616)	5,532
Balance	$ 469,923	$ 670,465	$ 469,923	$ 670,465