Note 4 - Other Real Estate Owned (Detail) - Other Real Estate Owned (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Other Real Estate Owned	$ 52,562	$ 38,157
Construction and Land Development OREO [Member]
Other Real Estate Owned	32,360	21,951
Residential Real Estate OREO [Member]
Other Real Estate Owned	4,605	5,591
Farmland and Other Commercial Enterprises OREO [Member]
Other Real Estate Owned	15,597	10,615
Total OREO [Member]
Other Real Estate Owned	$ 52,562	$ 38,157