Note 3 - Loans (Detail) - The past due status of loans (USD $)	Mar. 31, 2013	Dec. 31, 2012
30-59 Days Past Due	$ 12,551,000	$ 20,296,000
60-89 Days Past Due	1,737,000	3,004,000
90+ Days Past Due	5,861,000	7,107,000
Total Past Due	20,149,000	30,407,000
Current	654,967,000	645,783,000
Total Loans	675,116,000	676,190,000
90+ Days Past Due and Accruing	362,000
Construction Lending (Member) | Real Estate Construction [Member]
Current	3,490,000	3,157,000
Total Loans	3,490,000	3,157,000
Consumer Lot Lending [Member] | Real Estate Construction [Member]
Current	683,000	1,905,000
Total Loans	683,000	1,905,000
Commercial real estate lending [Member] | commercial, financial and agricultural (Member)
30-59 Days Past Due	4,681,000	7,650,000
60-89 Days Past Due		496,000
90+ Days Past Due	3,171,000	324,000
Total Past Due	7,852,000	8,470,000
Current	116,742,000	111,177,000
Total Loans	124,594,000	119,647,000
Land acquisition and development lending [Member] | commercial, financial and agricultural (Member)
90+ Days Past Due		5,234,000
Total Past Due		5,234,000
Current	28,208,000	28,903,000
Total Loans	28,208,000	34,137,000
Builder Line Lending [Member] | commercial, financial and agricultural (Member)
Current	13,890,000	15,948,000
Total Loans	13,890,000	15,948,000
Commercial Business Lending [Member] | commercial, financial and agricultural (Member)
30-59 Days Past Due	20,000	794,000
90+ Days Past Due	539,000	40,000
Total Past Due	559,000	834,000
Current	33,029,000	34,486,000
Total Loans	33,588,000	35,320,000
Real Estate - Residential Mortgage (Member)
30-59 Days Past Due	1,768,000	1,402,000
60-89 Days Past Due	530,000	456,000
90+ Days Past Due	1,217,000	641,000
Total Past Due	3,515,000	2,499,000
Current	148,393,000	146,758,000
Total Loans	151,908,000	149,257,000
90+ Days Past Due and Accruing	361,000
Equity Lines (Member)
30-59 Days Past Due	90,000	270,000
60-89 Days Past Due	32,000
90+ Days Past Due	70,000	22,000
Total Past Due	192,000	292,000
Current	32,660,000	33,032,000
Total Loans	32,852,000	33,324,000
consumer (Member)
30-59 Days Past Due	17,000	69,000
90+ Days Past Due	189,000	191,000
Total Past Due	206,000	260,000
Current	4,923,000	5,049,000
Total Loans	5,129,000	5,309,000
90+ Days Past Due and Accruing	1,000
consumer finance (Member)
30-59 Days Past Due	5,975,000	10,111,000
60-89 Days Past Due	1,175,000	2,052,000
90+ Days Past Due	675,000	655,000
Total Past Due	7,825,000	12,818,000
Current	272,949,000	265,368,000
Total Loans	$ 280,774,000	$ 278,186,000