Quarterly report pursuant to Section 13 or 15(d)

Securities (Details)

v2.4.0.6
Securities (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Amortized cost, gross unrealized gains and losses, and estimated fair values of investment securities    
Amortized Cost $ 595,286 $ 599,262
Gross Unrealized Gains 27,365 22,387
Gross Unrealized (Losses) (584) (1,483)
Estimated Fair Value 622,067 620,166
U.S. government and agency securities [Member]
   
Amortized cost, gross unrealized gains and losses, and estimated fair values of investment securities    
Amortized Cost 2,919 3,933
Gross Unrealized Gains 120 351
Gross Unrealized (Losses) (12)  
Estimated Fair Value 3,027 4,284
Obligations of states and political subdivisions [Member]
   
Amortized cost, gross unrealized gains and losses, and estimated fair values of investment securities    
Amortized Cost 198,954 189,117
Gross Unrealized Gains 15,488 11,337
Gross Unrealized (Losses) (79) (247)
Estimated Fair Value 214,363 200,207
Corporate and other bonds [Member]
   
Amortized cost, gross unrealized gains and losses, and estimated fair values of investment securities    
Amortized Cost 9,390 12,839
Gross Unrealized Gains 275 188
Gross Unrealized (Losses) (408) (787)
Estimated Fair Value 9,257 12,240
Mortgage-backed securities [Member]
   
Amortized cost, gross unrealized gains and losses, and estimated fair values of investment securities    
Amortized Cost 380,790 390,329
Gross Unrealized Gains 11,360 10,434
Gross Unrealized (Losses) (85) (445)
Estimated Fair Value 392,065 400,318
Other securities [Member]
   
Amortized cost, gross unrealized gains and losses, and estimated fair values of investment securities    
Amortized Cost 3,233 3,044
Gross Unrealized Gains 122 77
Gross Unrealized (Losses)   (4)
Estimated Fair Value $ 3,355 $ 3,117