Note 5 - Fair Value Measurements (Detail) - Carrying Amount of Assets Measured at Fair Value on a Nonrecurring Basis (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
OREO	$ 7,553	$ 14,828
Real Estate Construction And Land Development [Member] \| Fair Value, Inputs, Level 3 [Member]
Impaired Loans	8,595	18,636
Real Estate Construction And Land Development [Member]
Impaired Loans	8,595	18,636
Real Estate Mortgage Residential [Member] \| Fair Value, Inputs, Level 3 [Member]
Impaired Loans	8,467	8,160
Real Estate Mortgage Residential [Member]
Impaired Loans	8,467	8,160
Real Estate Mortgage Farmland And Other Commercial Enterprises [Member] \| Fair Value, Inputs, Level 3 [Member]
Impaired Loans	10,746	12,928
Real Estate Mortgage Farmland And Other Commercial Enterprises [Member]
Impaired Loans	10,746	12,928
Commercial And Industrial [Member] \| Fair Value, Inputs, Level 3 [Member]
Impaired Loans	16	293
Commercial And Industrial [Member]
Impaired Loans	16	293
Consumer Secured [Member] \| Fair Value, Inputs, Level 3 [Member]
Impaired Loans	21
Consumer Secured [Member]
Impaired Loans	21
Consumer Unsecured [Member] \| Fair Value, Inputs, Level 3 [Member]
Impaired Loans	114
Consumer Unsecured [Member]
Impaired Loans	114
Total [Member] \| Fair Value, Inputs, Level 3 [Member]
Impaired Loans	27,959	40,064
Total [Member]
Impaired Loans	27,959	40,064
Consumer [Member] \| Fair Value, Inputs, Level 3 [Member]
Impaired Loans		47
Consumer [Member]
Impaired Loans		47
Real Estate Construction And Land Development [Member] \| Fair Value, Inputs, Level 3 [Member]
OREO	4,162	8,826
Real Estate Construction And Land Development [Member]
OREO	4,162	8,826
Real Estate Mortgage Residential [Member] \| Fair Value, Inputs, Level 3 [Member]
OREO	2,022	1,217
Real Estate Mortgage Residential [Member]
OREO	2,022	1,217
Real Estate Mortgage Farmland And Other Commercial Enterprises [Member] \| Fair Value, Inputs, Level 3 [Member]
OREO	1,369	4,785
Real Estate Mortgage Farmland And Other Commercial Enterprises [Member]
OREO	1,369	4,785
Fair Value, Inputs, Level 3 [Member]
Impaired Loans	1,009,964	1,043,824
OREO	$ 7,553	$ 14,828

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents loan receivable as presented on the statement of financial position which may include mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts, or any other loans which are due the Company as of the balance sheet date.

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