Note 22 - Fair Value (Detail) - Fair Value Measurements Recorded for Assets Measured at Fair Value on a Non-Recurring Basis (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Sep. 30, 2012	Dec. 31, 2012		Dec. 31, 2011	Dec. 31, 2010
Loans held-for-sale	$ 80,300	$ 82,647	[1]		$ 13,686	[1]
Assets held-for-sale and excess properties transferred to OREO		2,597		1,111
Charged to Allowance for Loan and Covered Loan Losses [Member]
Collateral-dependent impaired loans		163,671		88,017	119,321
Loans held-for-sale		82,647		2,191
Charged to Earnings [Member]
OREO		4,244		3,785	23,367
Assets held-for-sale and excess properties transferred to OREO		$ 2,597		$ 1,111

[1] Amount represents charge-offs to the allowance for loan and covered loan losses at the time the loans were identified for sale.