Annual report pursuant to Section 13 and 15(d)

Deposits - Scheduled Maturities of Time Deposits (Detail)

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Deposits - Scheduled Maturities of Time Deposits (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Time Deposits [Line Items]  
2013 $ 745,134
2014 219,652
2015 17,475
2016 1,782
2017 and Thereafter 943
Total 984,986
Time Deposits of $100,000 or More [Member]
 
Time Deposits [Line Items]  
2013 444,247
2014 159,123
2015 12,817
2016   
2017 and Thereafter   
Total 616,187
Other Time Deposits [Member]
 
Time Deposits [Line Items]  
2013 300,887
2014 60,529
2015 4,658
2016 1,782
2017 and Thereafter 943
Total $ 368,799