XML 51 R40.htm IDEA: XBRL DOCUMENT v3.4.0.3
Securities Available for Sale - Amortized Cost and Estimated Fair Value (Details) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Amortized Cost - Due within one year $ 0  
Amortized Cost - Due after one year through five years 2,171  
Amortized Cost - Due after five years through ten years 28,847  
Amortized Cost - Due after ten years 17,531  
Amortized Cost 1,075,767 $ 1,014,060
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Estimated Fair Value - Due within one year 0  
Estimated Fair Value - Due after one year through five years 2,338  
Estimated Fair Value - Due after five years through ten years 30,177  
Estimated Fair Value - Due after ten years 16,992  
Estimated Fair Value 1,087,897 1,010,556
Available-for-sale Securities, Restricted 350,400 359,600
Trust Preferred Security [Member]    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Amortized Cost 4,549 4,545
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Estimated Fair Value 3,394 3,749
GSE collateralized mortgage obligations    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Amortized Cost - no single maturity date 493,539  
Amortized Cost 493,539 454,096
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Estimated Fair Value - no single maturity date 498,026  
Estimated Fair Value 498,026 449,980
GSE mortgage-backed securities    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Amortized Cost - no single maturity date 520,254  
Amortized Cost 520,254 497,889
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Estimated Fair Value - no single maturity date 526,910  
Estimated Fair Value 526,910 498,047
Mutual funds - GSE mortgage related securities    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Amortized Cost - no single maturity date 13,425  
Amortized Cost 13,425 13,425
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Estimated Fair Value - no single maturity date 13,454  
Estimated Fair Value $ 13,454 $ 13,269