XML 34 R52.htm IDEA: XBRL DOCUMENT v2.4.0.6
Securities (Details) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Available-for-Sale [Abstract]      
Amortized Cost $ 583,858,000 $ 511,731,000  
Gross Unrealized Gains 19,805,000 15,891,000  
Gross Unrealized Losses (320,000) (224,000)  
Fair Value 603,343,000 527,398,000  
Held-to-Maturity [Abstract]      
Amortized Cost 1,662,000 1,662,000  
Gross Unrealized Gains 1,000 0  
Gross Unrealized Losses (4,000) (1,000)  
Fair Value 1,659,000 1,661,000  
Available-for-Sale, Amortized Cost [Abstract]      
Due in one year or less 6,408,000    
Due after one through five years 23,034,000    
Due after five through ten years 102,857,000    
Due after ten years 36,313,000    
U.S. government sponsored agency mortgage-backed securities 370,246,000    
Total debt securities 538,858,000    
Marketable equity securities 45,000,000    
Total securities 583,858,000    
Available-for-Sale, Fair Value [Abstract]      
Due in one year or less 6,483,000    
Due after one through five years 24,006,000    
Due after five through ten years 105,721,000    
Due after ten years 37,926,000    
U.S. government sponsored agency mortgage-backed securities 383,581,000    
Total debt securities 557,717,000    
Marketable equity securities 45,626,000    
Total securities 603,343,000    
Held-to-Maturity, Amortized Cost [Abstract]      
Due in one year or less 0    
Due after one through five years 0    
Due after five through ten years 1,182,000    
Due after ten years 480,000    
U.S. government sponsored agency mortgage-backed securities 0    
Total debt securities 1,662,000    
Marketable equity securities 0    
Total securities 1,662,000    
Held-to-Maturity, Fair Value [Abstract]      
Due in one year or less 0    
Due after one through five years 0    
Due after five through ten years 1,183,000    
Due after ten years 476,000    
U.S. government sponsored agency mortgage-backed securities 0    
Total debt securities 1,659,000    
Marketable equity securities 0    
Total securities 1,659,000    
Securities gains, net 1,155,000 218,000 0
Realized pre-tax gain on sale of securities 2,400,000 218,000 0
Realized pre-tax loss on sale of securities 1,200,000   0
Securities pledged as collateral to secure public deposit and for other purposes 262,400,000 198,600,000  
Amortized cost of securities sold under agreements to repurchase 237,300,000 217,200,000  
Percentage of total investment with unrealized losses (in hundredths) 11.50% 4.80%  
Available-for-Sale, Amortized Cost [Abstract]      
Less Than 12 Months 69,265,000 24,073,000  
12 Months or More   942,000  
Total 69,265,000 25,015,000  
Available-for-Sale, Gross Unrealized Losses [Abstract]      
Less Than 12 Months (320,000) (82,000)  
12 Months or More   (142,000)  
Total (320,000) (224,000)  
Available-for-Sale, Fair Value [Abstract]      
Less Than 12 Months 68,945,000 23,991,000  
12 Months or More   800,000  
Total 68,945,000 24,791,000  
Held-to-Maturity, Amortized Cost [Abstract]      
Less Than 12 Months 480,000 480,000  
Held-to-Maturity, Gross Unrealized Losses [Abstract]      
Less Than 12 Months (4,000) (1,000)  
Held-to-Maturity, Fair Value [Abstract]      
Less Than 12 Months 476,000 479,000  
U.S. Treasury and government agencies [Member]
      
Available-for-Sale [Abstract]      
Amortized Cost 60,625,000 32,077,000  
Gross Unrealized Gains 463,000 1,171,000  
Gross Unrealized Losses (173,000) 0  
Fair Value 60,915,000 33,248,000  
Held-to-Maturity [Abstract]      
Amortized Cost 480,000 480,000  
Gross Unrealized Gains 0 0  
Gross Unrealized Losses (4,000) (1,000)  
Fair Value 476,000 479,000  
Available-for-Sale, Amortized Cost [Abstract]      
Less Than 12 Months 47,576,000    
Total 47,576,000    
Available-for-Sale, Gross Unrealized Losses [Abstract]      
Less Than 12 Months (173,000)    
Total (173,000)    
Available-for-Sale, Fair Value [Abstract]      
Less Than 12 Months 47,403,000    
Total 47,403,000    
Held-to-Maturity, Amortized Cost [Abstract]      
Less Than 12 Months 480,000 480,000  
Held-to-Maturity, Gross Unrealized Losses [Abstract]      
Less Than 12 Months (4,000) (1,000)  
Held-to-Maturity, Fair Value [Abstract]      
Less Than 12 Months 476,000 479,000  
State and political subdivisions [Member]
      
Available-for-Sale [Abstract]      
Amortized Cost 107,987,000 68,358,000  
Gross Unrealized Gains 5,369,000 3,816,000  
Gross Unrealized Losses (135,000) (30,000)  
Fair Value 113,221,000 72,144,000  
Held-to-Maturity [Abstract]      
Amortized Cost 1,182,000 1,182,000  
Gross Unrealized Gains 1,000 0  
Gross Unrealized Losses 0 0  
Fair Value 1,183,000 1,182,000  
Available-for-Sale, Amortized Cost [Abstract]      
Less Than 12 Months 11,126,000 6,173,000  
12 Months or More   613,000  
Total 11,126,000 6,786,000  
Available-for-Sale, Gross Unrealized Losses [Abstract]      
Less Than 12 Months (135,000) (25,000)  
12 Months or More   (5,000)  
Total (135,000) (30,000)  
Available-for-Sale, Fair Value [Abstract]      
Less Than 12 Months 10,991,000 6,148,000  
12 Months or More   608,000  
Total 10,991,000 6,756,000  
U.S. government sponsored agency mortgage-backed securities [Member]
      
Available-for-Sale [Abstract]      
Amortized Cost 370,246,000 390,714,000  
Gross Unrealized Gains 13,347,000 10,186,000  
Gross Unrealized Losses (12,000) (57,000)  
Fair Value 383,581,000 400,843,000  
Available-for-Sale, Amortized Cost [Abstract]      
Less Than 12 Months 10,563,000 17,900,000  
Total 10,563,000 17,900,000  
Available-for-Sale, Gross Unrealized Losses [Abstract]      
Less Than 12 Months (12,000) (57,000)  
Total (12,000) (57,000)  
Available-for-Sale, Fair Value [Abstract]      
Less Than 12 Months 10,551,000 17,843,000  
Total 10,551,000 17,843,000  
Debt securities [Member]
      
Available-for-Sale [Abstract]      
Amortized Cost 538,858,000 491,149,000  
Gross Unrealized Gains 19,179,000 15,173,000  
Gross Unrealized Losses (320,000) (87,000)  
Fair Value 557,717,000 506,235,000  
Available-for-Sale, Amortized Cost [Abstract]      
Less Than 12 Months 69,265,000 24,073,000  
12 Months or More   613,000  
Total 69,265,000 24,686,000  
Available-for-Sale, Gross Unrealized Losses [Abstract]      
Less Than 12 Months (320,000) (82,000)  
12 Months or More   (5,000)  
Total (320,000) (87,000)  
Available-for-Sale, Fair Value [Abstract]      
Less Than 12 Months 68,945,000 23,991,000  
12 Months or More   608,000  
Total 68,945,000 24,599,000  
Marketable equity securities [Member]
      
Available-for-Sale [Abstract]      
Amortized Cost 45,000,000 20,582,000  
Gross Unrealized Gains 626,000 718,000  
Gross Unrealized Losses 0 (137,000)  
Fair Value 45,626,000 21,163,000  
Available-for-Sale, Amortized Cost [Abstract]      
12 Months or More   329,000  
Total   329,000  
Available-for-Sale, Gross Unrealized Losses [Abstract]      
12 Months or More   (137,000)  
Total   (137,000)  
Available-for-Sale, Fair Value [Abstract]      
12 Months or More   192,000  
Total   $ 192,000  
Agency Securities [Member]
      
Held-to-Maturity, Fair Value [Abstract]      
Number of security sold 4    
Mortgage Backed Securities [Member]
      
Held-to-Maturity, Fair Value [Abstract]      
Number of security sold 1    
Auction Rate Securities [Member]
      
Held-to-Maturity, Fair Value [Abstract]      
Number of security sold 5