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Commitments and Contingencies (Details) - USD ($)
 6 Months Ended
Jun. 30, 2015
Dec. 31, 2014
Commitments to extend credit    
Commitments and Contingencies    
Commitments to extend credit $ 205,562,000 $ 214,131,000
Undisbursed lines of credit    
Commitments and Contingencies    
Commitments to extend credit 204,082,000 212,501,000
Undisbursed portions of construction loans    
Commitments and Contingencies    
Commitments to extend credit 19,359,000 15,977,000
Standby letters of credit and financial guarantees    
Commitments and Contingencies    
Commitments to extend credit $ 1,480,000  
Minimum | Undisbursed lines of credit    
Commitments and Contingencies    
Commitments to extend credit, term of agreement 1 month  
Maximum | Undisbursed lines of credit    
Commitments and Contingencies    
Commitments to extend credit, term of agreement 12 months  
Maximum | Standby letters of credit and financial guarantees    
Commitments and Contingencies    
Commitments to extend credit, term of agreement 1 year  
Probable loan loss experience on unfunded obligations [Member]    
Commitments and Contingencies    
Loss Contingency, Estimate of Possible Loss $ 195,000 $ 165,000