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Borrowings (Summary Of Short-Term Borrowings) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Borrowings [Abstract]
Securities sold under repurchase agreements	$ 729,987	$ 646,660
Federal funds purchased		60,000
Subordinated notes	137,841	134,634
Other short-term borrowings	10,000	10,000
Short-term borrowings, total	$ 877,828	$ 851,294

The carrying value as of the balance sheet date of securities that an institution sells and agrees to repurchase (the identical or substantially the same securities) as a seller-borrower at a specified date for a specified price, also known as a repurchase agreement, or repo. Most repos involve obligations of the federal government or its agencies, but other financial instruments, such as commercial paper, banker's acceptances, and negotiable certificates of deposit, are sometimes used in repos.

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- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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