Allowance for losses on loans subject to loss share agreements.

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Period Type:	instant

- Definition

Allowance for Credit Losses, Covered Loans, Net Charge Offs

+ Details

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Period Type:	duration

- Definition

Expected reimbursements from the FDIC for losses on covered assets.

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- Definition

The net gain or loss resulting from sales and other disposals of other real estate owned, increases and decreases in the valuation allowance for foreclosed real estate, write-downs of other real estate owned after acquisition or physical possession as well as other expenses recognized during the period on foreclosed real estate properties.

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Period Type:	duration

- Definition

The sum of the periodic provision charged to operations, based on an assessment of the uncollectibility of the loan and lease portfolio on covered loans, the offset to which is either added to or deducted from the allowance account for the purpose of reducing loan receivable and leases to an amount that approximates their net realizable value (the amount expected to be collected).

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ Details

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ALLOWANCE FOR LOAN AND LEASE LOSSES - Additional Information (Detail) (USD $)	3 Months Ended					9 Months Ended
	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Jun. 30, 2010	Dec. 31, 2009
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for loan and lease losses	$ 7,260,000	$ 23,895,000	$ 26,016,000	$ 13,997,000	$ 20,725,000	$ 57,171,000	$ 49,147,000
Net charge-offs	10,200,000				10,400,000	25,600,000	37,600,000
FDIC loss sharing income	8,377,000				17,800,000	53,455,000	40,538,000
Allowance for covered loan losses	48,112,000	51,044,000	31,555,000	16,493,000	11,583,000	48,112,000	11,583,000	1,273,000	0
Covered Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Loss share expenses primarily related to losses on covered OREO	$ 3,800,000					$ 10,300,000