Note 12 - 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		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Charged to allowance for loan and covered loan losses:
Collateral-dependent impaired loans	$ 43,414	$ 26,137	$ 79,828	$ 62,406
Collateral-dependent impaired loans	43,414	26,137	79,828	62,406
Loans held-for-sale	80,260	1,596	82,647	1,796
Loans held-for-sale	80,260	1,596	82,647	1,796
Charged to earnings:
OREO	1,410	674	3,924	3,309
Assets held-for-sale	1,255	75	1,255	1,111
OREO	1,410	674	3,924	3,309
Assets held-for-sale	$ 1,255	$ 75	$ 1,255	$ 1,111