Fair Value Measurements - Schedule of Estimated Fair Value and Related Carrying or Notional Amounts of Company's Financial Instruments (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Assets:    
Investment securities available-for-sale $ 135,754 $ 92,614
Investment securities held-to-maturity 33,365  
FEDERAL FUNDS SOLD   5,000
Carrying Amount [Member]
   
Assets:    
Cash and cash equivalents 47,720 54,126
Investment securities available-for-sale 135,754 92,614
Investment securities held-to-maturity 35,050 21,136
FEDERAL FUNDS SOLD   5,000
Federal Home Loan Bank stock 906 936
Loans, net of allowance for loan losses 300,927 337,400
Liabilities:    
Deposits 484,279 489,034
Short-term borrowings 1,231 638
Long-term debt 5,000  
Estimated Fair Value [Member]
   
Assets:    
Cash and cash equivalents 47,720 54,126
Investment securities available-for-sale 135,754 92,614
Investment securities held-to-maturity 33,365 21,185
FEDERAL FUNDS SOLD   5,000
Federal Home Loan Bank stock 906 936
Loans, net of allowance for loan losses 303,291 339,230
Liabilities:    
Deposits 484,957 490,596
Short-term borrowings 1,231 638
Long-term debt 5,011  
Level 1 [Member]
   
Assets:    
Cash and cash equivalents 47,720 54,126
FEDERAL FUNDS SOLD   5,000
Level 2 [Member]
   
Assets:    
Investment securities available-for-sale 135,754 92,614
Investment securities held-to-maturity 33,365 21,185
Federal Home Loan Bank stock 906 936
Liabilities:    
Deposits 484,957 490,596
Short-term borrowings 1,231 638
Long-term debt 5,011  
Level 3 [Member]
   
Assets:    
Loans, net of allowance for loan losses $ 303,291 $ 339,230