Loans Receivable (Summary Of Changes In Accretable Yields Of Acquired Loans) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010
Loans Receivable [Line Items]
Balance, beginning of period	$ 708,571	$ 229,584
Acquisition	146,509	11,050
Net transfers from (to) nonaccretable difference to (from) accretable yield	(178,864)
Transfers from nonaccretable difference to accretable yield		609,581
Accretion	(205,405)	(141,644)
Balance, end of period	470,811	708,571
Acquired Impaired Loans [Member]
Loans Receivable [Line Items]
Balance, beginning of period	82,381	6,598
Acquisition	7,346	207
Net transfers from (to) nonaccretable difference to (from) accretable yield	37,687
Transfers from nonaccretable difference to accretable yield		89,217
Accretion	(43,580)	(913,641)
Balance, end of period	83,834	82,381
Acquired Performing Loans [Member]
Loans Receivable [Line Items]
Balance, beginning of period	626,190	222,986
Acquisition	139,163	10,843
Net transfers from (to) nonaccretable difference to (from) accretable yield	(216,551)
Transfers from nonaccretable difference to accretable yield		520,364
Accretion	(161,825)	(128,003)
Balance, end of period	$ 386,977	$ 626,190

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

Increases in the aggregate excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan due to the acquisition of similar loans accounted for as debt securities during the period. This relates to 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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