Note 14 - Additional Cash Flow Information (Detail) - Additional Cash Flow Information (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Interest paid	$ 8,047	$ 11,141
Income taxes paid	5,372	4,878
Transfers of loans to foreclosed assets held for sale	3,423	14,543
Covered by FDIC Loss Share Agreements [Member]
Transfers of loans covered by FDIC loss share agreements to foreclosed assets covered by FDIC loss share agreements	$ 7,443	$ 8,598