Information Regarding Estimates of Contractually Required Payments Receivable, Cash Flows Expected to be Collected, and Estimated Fair Value of PCI Loans Acquired (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 28, 2012	Dec. 31, 2011
Contractually required principal and interest	$ 144,357	$ 1,333,686
Contractual cash flows not expected to be collected (non-accretable difference)	(9,111)	(66,467)
Expected cash flows to be collected	135,246	1,267,219
Interest component of expected cash flows (accretable yield)	(17,991)	(168,271)
Fair value of acquired loans	$ 117,255	$ 1,098,948

Information Regarding Estimates of Contractually Required Payments Receivable, Cash Flows Expected to be Collected, and Estimated Fair Value of PCI Loans Acquired (Detail) (USD $)
In Thousands, unless otherwise specified

Mar. 28, 2012

Dec. 31, 2011

Contractually required principal and interest

$ 144,357

$ 1,333,686

Contractual cash flows not expected to be collected (non-accretable difference)

(9,111)

(66,467)

Expected cash flows to be collected

135,246

1,267,219

Interest component of expected cash flows (accretable yield)

(17,991)

(168,271)

Fair value of acquired loans

$ 117,255

$ 1,098,948

- Definition

The price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. This relates to loans not 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

The investor's estimate, at acquisition, of the amount and timing of undiscounted principal, interest, and other cash flows expected to be collected. This would be the investor's best estimate of cash flows, including the effect of prepayments if considered, that is used in determining the acquisition price, and, in a business combination, the investor's estimate of fair value for purposes of acquisition price allocation. This relates to loans not 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

The total undiscounted amount of all uncollected contractual principal and contractual interest payments both past due and scheduled for the future, adjusted for the timing of prepayments, if considered, less any reduction by the investor at the acquisition date. This relates to loans not 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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