Note 17 - Fair Value of Financial Instruments (Detail) - Assets and liabilities carried at fair value on a non-recurring basis, and the method used to determine their fair value: (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Assets:
Assets	$ 60,294	$ 51,734
Loans Held For Sale [Member] | Fair Value, Inputs, Level 3 [Member]
Assets:
Assets	5,313
Loans Held For Sale [Member]
Assets:
Assets	5,313
Impaired Loans [Member] | Fair Value, Inputs, Level 3 [Member]
Assets:
Assets	49,703	48,555
Impaired Loans [Member]
Assets:
Assets	49,703	48,555
Other Real Estate Owned [Member] | Fair Value, Inputs, Level 3 [Member]
Assets:
Assets	5,278	3,179
Other Real Estate Owned [Member]
Assets:
Assets	5,278	3,179
Fair Value, Inputs, Level 3 [Member]
Assets:
Assets	$ 60,294	$ 51,734