Mergers And Acquisitions (Schedule Of Fair Value Of Accounted Acquired Loan Portfolio) (Detail) (USD $) In Thousands, unless otherwise specified	Jul. 08, 2011
Contractually required principal and interest at acquisition	$ 72,647
Expected cash flows at acquisition	48,112
Basis in acquired loans at acquisition - estimated fair value	46,446
Centra Financial Holdings Inc [Member]
Contractually required principal and interest at acquisition	1,377,211
Contractual cash flows not expected to be collected	(39,812)
Expected cash flows at acquisition	1,337,399
Interest component of expected cash flows	(321,297)
Basis in acquired loans at acquisition - estimated fair value	$ 1,016,102

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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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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