Loans (Details) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2009
Total non-covered and covered loans outstanding
Commercial loans	$ 4,808,305	$ 4,527,497	$ 4,335,392
Mortgage loans	400,661	403,843	430,550
Installment loans	1,259,072	1,308,860	1,370,400
Home equity loans	738,719	749,378	762,288
Credit card loans	143,828	149,506	146,253
Leases	57,634	63,004	58,555
Total noncovered loans	7,408,219	7,202,088	7,103,438
Less allowance for loan losses noncovered	109,187	114,690	118,343	117,806	115,092
Net noncovered loans	7,299,032	7,087,398	6,985,095
Covered loans	1,755,107	1,976,754	2,259,522
Less allowance for loan losses	(33,360)	(13,733)	0
Net covered loans	1,721,747	1,963,021	2,259,522
Net loans	$ 9,020,779	$ 9,050,419	$ 9,244,617

Loans and leases receivable allowance on covered loans.

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Gross loans covered by loss share agreements with the FDIC which afford the Bank significant loss protection.

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Noncovered loans and leases receivable net.

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The allowance for loan and lease losses represents the reserve to cover probable credit losses related to specifically identified loans and leases, as well as probable credit losses inherent in the remainder of the loan portfolio as of the balance sheet date. For banks, include currently required allocated transfer risk reserves. Include carryover of or adjustments to the allowance for loan losses in connection with business combinations determined to be appropriate.

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Reflects the sum of the gross carrying amounts of the various categories of unpaid commercial loans and leases receivable, primarily issued to businesses. Includes: (1) commercial and industrial loans, consisting of general purpose loans to entities involved in producing, transporting, or merchandising products sold in the course of commerce; (2) agricultural loans consisting of borrowings used to finance major equipment and machinery purchases and expenses, livestock or crop production (including fisheries), and to supplement working capital needs of an entity engaged in farming operations; (3) mortgage loans secured by a [legal] security interest in real property [commercial building or business real property]; (4) obligation in the form of [promissory] notes, used for the funding of construction projects; (5) interbank and other loans to financial institutions for the purpose of liquidity management on the part of the borrower; (6) draws against credit facilities provided to companies involved in mortgage banking activities (warehousing); (7) amounts lent to businesses engaged in international activities (trade financing); (8) lease financings; and (9) loans to governmental entities.

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Gross amount under revolving lines of credit outstanding extended to a homeowner and collateralized by the equity in the home. Such lines of credit are generally subordinated to the homeowner's mortgage loan or loans. Loan proceeds are generally unrestricted as to use by the borrower.

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The total value of other non major installment loans (gross) made by financial institutions to consumers, the proceeds of which are used by individuals (borrowers) for purchases such as household goods, vacations, and other consumer items. Such loans are generally repaid in periodic payments over a predetermined time period, are generally secured by the item purchased and may be either direct to the borrower (direct paper) or to the dealer (indirect paper or retail sales contract).

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Reflects the gross carrying amount of unpaid loans issued to individuals to provide financing in the legal form of a lease agreement which meets the criteria for treating the arrangement as a direct financing lease. Automobiles and personal computers are typical examples of leased assets.

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The gross carrying amount of mortgage loans to individuals. This item excludes subordinated loans such as home equity lines of credit.

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Reflects the gross carrying amount of unpaid credit card loans issued to individuals under revolving credit arrangements that typically charge comparatively higher rates of interest commensurate with higher credit risk, generate late payment and similar types of fees, and are usually unsecured.

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Reflects the aggregate gross carrying amount of all categories of loans and leases held in portfolio, prior to deducting deferred income and the allowance for losses on loans and leases.

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Reflects the aggregate carrying amount of all categories of loans and leases held in portfolio, net of unearned income and the allowance for losses on loans and leases.

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