XML 61 R32.htm IDEA: XBRL DOCUMENT v2.4.0.8
Securities - Summary of Investments in an Unrealized Loss Position that were Temporarily Impaired (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Summary of investments in unrealized loss position that were temporarily impaired    
Less than 12 months - Fair Value $ 67,199 $ 23,899
12 months or more - Fair Value 1,342   
Total - Fair Value 68,541 23,899
Summary of investments in unrealized loss position that were temporarily impaired, Unrealized (Loss)    
Less than 12 months - Unrealized (Loss) (2,102) (319)
12 months or more - Unrealized (Loss) (78)   
Total Unrealized (Loss) (2,180) (319)
U.S. Agency and Mortgage-Backed Securities [Member]
    
Summary of investments in unrealized loss position that were temporarily impaired    
Less than 12 months - Fair Value 59,441 19,612
12 months or more - Fair Value      
Total - Fair Value 59,441 19,612
Summary of investments in unrealized loss position that were temporarily impaired, Unrealized (Loss)    
Less than 12 months - Unrealized (Loss) (1,769) (236)
12 months or more - Unrealized (Loss)      
Total Unrealized (Loss) (1,769) (236)
Obligations of States and Political Subdivisions [Member]
    
Summary of investments in unrealized loss position that were temporarily impaired    
Less than 12 months - Fair Value 7,758 4,287
12 months or more - Fair Value 1,342   
Total - Fair Value 9,100 4,287
Summary of investments in unrealized loss position that were temporarily impaired, Unrealized (Loss)    
Less than 12 months - Unrealized (Loss) (333) (83)
12 months or more - Unrealized (Loss) (78)   
Total Unrealized (Loss) $ (411) $ (83)