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Note 11 - Borrowings (Detail) - Information Relating to Securities Sold Under Agreements to Repurchase (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Balance	$ 42,785	$ 46,784
Average Interest Rate [Member]
Average Interest Rate	0.19%	0.19%
Daily Average Outstanding Balance [Member]
Balance	47,605	43,847
Daily Average Interest Rate [Member]
Average Interest Rate	0.18%	0.19%
Maximum Outstanding Month End [Member]
Balance	$ 55,047	$ 47,603

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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