XML 61 R51.htm IDEA: XBRL DOCUMENT v2.4.0.8
Investment in Securities (Schedule of Investement Securities) (Details) (USD $)
In Thousands, unless otherwise specified
9 Months Ended 12 Months Ended
Sep. 30, 2014
Dec. 31, 2013
Investment [Line Items]    
Amortized Cost $ 326,364 $ 312,153
Gross Unrealized Losses 13,841 8,537
Gross Unrealized Gains 365 2,923
Fair Value 339,840 317,767
State and Political Subdivisions [Member]
   
Investment [Line Items]    
Amortized Cost 322,614 308,403
Gross Unrealized Losses 365 8,537
Gross Unrealized Gains 13,841 2,923
Fair Value 336,090 314,017
Certificates Of Deposit [Member]
   
Investment [Line Items]    
Amortized Cost 3,750 3,750
Gross Unrealized Losses      
Gross Unrealized Gains      
Fair Value $ 3,750 $ 3,750