Loans (Schedule Of Loan Portfolio Excluding Covered Assets) (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011
Loans [Line Items]
Commercial and industrial	$ 4,523,780	$ 4,192,842
Commercial - owner-occupied commercial real estate	1,384,831	1,130,932
Total commercial	5,908,611	5,323,774
Commercial real estate	2,124,492	2,233,851
Commercial real estate - multi-family	499,250	452,595
Total commercial real estate	2,623,742	2,686,446
Construction	171,014	287,002
Residential real estate	330,254	297,229
Home equity	174,131	181,158
Personal	228,483	232,952
Total Loans	9,436,235	9,008,561	8,672,642
Deferred loan fees included as a reduction in total loans	40,129	39,259
Overdrawn demand deposits included in total loans	$ 2,471	$ 1,919

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Consumer loans collateralized by the equity in the home.

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Loans consisting primarily of single-family residential, multi-family and commercial construction projects.

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Total commercial real estate loans receivable.

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Total principal balance of residential real estate loans to individuals, net of deferred income.

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Overdrawn Demand Deposits Included In Total Loans

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Owner Occupied Commercial Real Estate Loan

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Personal Loan

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Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for loans and leases covered under loss sharing agreements.

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