Transactions with Directors and Executive Officers (Details) (USD $)
12 Months Ended
Dec. 31, 2014
Analysis of the changes in loans to related parties  
Balance at beginning of year $ 30,105,000
Addition due to change in relationship 8,393,000
Deletion due to change in relationship (40,000)
New loans/ advances 50,576,000
Repayments (51,584,000)
Balance at end of year 37,450,000
Directors and executive officers  
Analysis of the changes in loans to related parties  
Total unused commitments $ 22,600,000