XML 71 R41.htm IDEA: XBRL DOCUMENT v2.4.0.8
Investment Securities - Additional Information (Detail) (USD $)
6 Months Ended 12 Months Ended
Jun. 30, 2014
Security
Jun. 30, 2013
Dec. 31, 2013
Investments Debt And Equity Securities [Abstract]      
Number of debt securities continues loss position for more than twelve months 24    
Number of debt securities continues loss position for less than twelve months 13    
Investment securities available-for-sale carrying amount $ 73,600,000   $ 72,700,000
Gains realized on sales of securities available-for-sale 103,000 484,000 500,000
Losses on sales of securities $ 0   $ 0