Loans (Details 4) (USD $)
Jun. 30, 2012
Contract
Dec. 31, 2011
Contract
Troubled debt restructurings    
Number of Contracts 5 9
Pre-Modification Outstanding Recorded Investment $ 9,959,094 $ 11,697,184
Post-Modification Outstanding Recorded Investment 9,959,094 11,697,184
Related Allowance 919,000 921,000
Real estate, construction [Member]
   
Troubled debt restructurings    
Number of Contracts 1 3
Pre-Modification Outstanding Recorded Investment 181,364 1,075,176
Post-Modification Outstanding Recorded Investment 181,364 1,075,176
Related Allowance 86,000 112,000
Real estate, mortgage [Member]
   
Troubled debt restructurings    
Number of Contracts 3 5
Pre-Modification Outstanding Recorded Investment 9,072,468 9,915,672
Post-Modification Outstanding Recorded Investment 9,072,468 9,915,672
Related Allowance 833,000 809,000
Commercial and industrial [Member]
   
Troubled debt restructurings    
Number of Contracts 1 1
Pre-Modification Outstanding Recorded Investment 705,262 706,336
Post-Modification Outstanding Recorded Investment $ 705,262 $ 706,336