Loans Receivable (Summary Of Changes In Accretable Yields Of Acquired Loans) (Details) (USD $) In Thousands	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010
Balance, beginning of period	$ 708,571	$ 229,584
Decrease in expected cash flows based on actual cash flow and changes in cash flow assumptions	(19,439)	(32,696)
Net transfers from (to) nonaccretable difference to accretable yield	(216,596)
Transfers from nonaccretable difference to accretable yield		177,097
Accretion	(94,341)	(65,858)
Balance, end of period	378,195	308,127
Acquired Impaired Loans [Member]
Balance, beginning of period	82,381	6,598
Decrease in expected cash flows based on actual cash flow and changes in cash flow assumptions	(12,655)	(11,544)
Net transfers from (to) nonaccretable difference to accretable yield	35,926
Transfers from nonaccretable difference to accretable yield		54,526
Accretion	(20,232)	(14,056)
Balance, end of period	85,420	35,524
Acquired Performing Loans [Member]
Balance, beginning of period	626,190	222,986
Decrease in expected cash flows based on actual cash flow and changes in cash flow assumptions	(6,784)	(21,152)
Net transfers from (to) nonaccretable difference to accretable yield	(252,522)
Transfers from nonaccretable difference to accretable yield		122,571
Accretion	(74,109)	(51,802)
Balance, end of period	$ 292,775	$ 272,603

The aggregate excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan for loans accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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Current period recognition due to accretion of the excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan for loans accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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- Definition

Change in the estimate of cash flows expected to be collected, after acquisition of a loan, which results in an increase in accretable yield (for example, if actual cash flows are significantly greater than previously expected). This relates to loans accounted for as debt securities, with evidence of deterioration of credit quality since origination that was acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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