XML 84 R68.htm IDEA: XBRL DOCUMENT v2.4.0.6
INVESTMENT SECURITIES (Details 2) (USD $)
3 Months Ended 12 Months Ended
Sep. 30, 2012
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Held to Maturity, Amortized Cost        
Mortgage-backed securities   $ 161,848,000    
Held to Maturity, Estimated Fair Value        
Mortgage-backed securities   162,528,000    
Available for Sale, Amortized Cost        
Due in one year or less   170,435,000    
Due after one year through five years   164,101,000    
Due after five years through ten years   113,360,000    
Due after ten years   140,225,000    
Mortgage-backed securities   925,018,000    
Other   866,000    
Total   1,514,005,000    
Available for Sale, Estimated Fair Value        
Due in one year or less   170,933,000    
Due after one year through five years   168,358,000    
Due after five years through ten years   114,487,000    
Due after ten years   141,018,000    
Mortgage-backed securities   941,043,000    
Other   906,000    
Total   1,536,745,000 1,492,994,000  
Available for sale        
Gross proceeds from sale of available for sale investment securities 124,700,000 130,076,000 137,980,000 439,403,000
Gross realized gains on the sales of the available for sale investment securities 700,000 1,700,000 1,400,000 9,600,000
Gross realized losses on the sales of the available for sale investment securities   900,000 100,000 8,800,000
Average net yield of available for sale mortgage backed securities sold (as a percent) 0.60%      
Weighted average life of available for sale mortgage backed securities sold 1 year 3 months 18 days      
Investment in held to maturity investments 133,200,000      
Average yield of held to maturity investments 1.88%      
Weighted average life of held to maturity 5 years 3 months 18 days      
Investment securities pledged to party with no right to sell or repledge the collateral   $ 905,500,000 $ 938,000,000