Note 10 - Commitments and Contingent Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Unfunded Loan Commitments	$ 328,881	$ 339,651
Financial Standby Letter of Credit [Member]
Letters of Credit Outstanding, Amount	31,783	32,347
Standby Letters of Credit [Member]
Letters of Credit Outstanding, Amount	$ 344	$ 344