Annual report pursuant to Section 13 and 15(d)

Securities Available for Sale (Details)

v2.4.0.6
Securities Available for Sale (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Amortized cost, gross unrealized gains and losses, and estimated fair values of investment securities    
Amortized Cost $ 563,518 $ 599,262
Gross Unrealized Gains 23,039 22,387
Gross Unrealized (Losses) (1,175) (1,483)
Estimated Fair Value 585,382 620,166
U.S. government and agency securities [Member]
   
Amortized cost, gross unrealized gains and losses, and estimated fair values of investment securities    
Amortized Cost 2,581 3,933
Gross Unrealized Gains 268 351
Estimated Fair Value 2,849 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 214,980 189,117
Gross Unrealized Gains 15,123 11,337
Gross Unrealized (Losses) (325) (247)
Estimated Fair Value 229,778 200,207
Corporate and other bonds [Member]
   
Amortized cost, gross unrealized gains and losses, and estimated fair values of investment securities    
Amortized Cost 7,353 12,839
Gross Unrealized Gains 173 188
Gross Unrealized (Losses) (314) (787)
Estimated Fair Value 7,212 12,240
Mortgage-backed securities [Member]
   
Amortized cost, gross unrealized gains and losses, and estimated fair values of investment securities    
Amortized Cost 335,327 390,329
Gross Unrealized Gains 7,383 10,434
Gross Unrealized (Losses) (536) (445)
Estimated Fair Value 342,174 400,318
Other securities [Member]
   
Amortized cost, gross unrealized gains and losses, and estimated fair values of investment securities    
Amortized Cost 3,277 3,044
Gross Unrealized Gains 92 77
Gross Unrealized (Losses)   (4)
Estimated Fair Value $ 3,369 $ 3,117