Fair Value Measurement (Schedule Of Financial Disclosures At Fair Value) (Details) (USD $)	Jun. 30, 2012	Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and interest bearing deposits in other banks	$ 1,193,958,000	$ 770,292,000
Securities available for sale	26,000	46,435,000
Tax certificates	5,293,000	46,488,000
Loans receivable including loans held for sale, net	402,823,000
Junior subordinated debentures	345,092,000	337,114,000
Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and interest bearing deposits in other banks	1,193,958,000
Securities available for sale	26,000
Tax certificates	5,346,000
Loans receivable including loans held for sale, net	405,300,000
Junior subordinated debentures	307,625,000
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and interest bearing deposits in other banks	1,193,958,000
Securities available for sale	26,000
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Junior subordinated debentures	307,625,000
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Tax certificates	5,346,000
Loans receivable including loans held for sale, net	$ 405,300,000