XML 61 R51.htm IDEA: XBRL DOCUMENT v3.23.3
Investment Securities - Gross unrealized losses (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Investment securities available-for-sale    
Unrealized losses less than 12 months $ (9) $ (19,761)
Fair value less than 12 months 584 178,719
Unrealized losses over 12 months (156,025) (112,503)
Fair value over 12 months 600,544 535,024
Total Unrealized losses (156,034) (132,264)
Total Fair value 601,128 713,743
Held-to-maturity investment securities    
Unrealized losses less than 12 months   (3,336)
Fair value less than 12 months   18,788
Unrealized losses over 12 months   (47,654)
Fair value over 12 months   249,623
Total Unrealized losses   (50,990)
Total Fair value   268,411
Unrealized losses less than 12 months   (23,097)
Fair value less than 12 months   197,507
Unrealized losses over 12 months   (160,157)
Fair value over 12 months   784,647
Total Unrealized losses   (183,254)
Total Fair value   982,154
U. S. Treasury and agencies    
Investment securities available-for-sale    
Unrealized losses less than 12 months   (17)
Fair value less than 12 months   509
Unrealized losses over 12 months (23)  
Fair value over 12 months 389  
Total Unrealized losses (23) (17)
Total Fair value 389 509
Mortgage backed securities - Residential agency    
Investment securities available-for-sale    
Unrealized losses less than 12 months (9) (10,457)
Fair value less than 12 months 577 79,693
Unrealized losses over 12 months (135,213) (107,711)
Fair value over 12 months 484,451 507,418
Total Unrealized losses (135,222) (118,168)
Total Fair value 485,028 587,111
Held-to-maturity investment securities    
Unrealized losses over 12 months   (33,254)
Fair value over 12 months   150,861
Total Unrealized losses   (33,254)
Total Fair value   150,861
Mortgage backed securities - Commercial    
Investment securities available-for-sale    
Unrealized losses less than 12 months   (4,835)
Fair value less than 12 months   50,437
Unrealized losses over 12 months (8,295) (2,276)
Fair value over 12 months 58,684 13,120
Total Unrealized losses (8,295) (7,111)
Total Fair value 58,684 63,557
Asset backed securities    
Investment securities available-for-sale    
Fair value less than 12 months 7 32
Fair value over 12 months 19 2
Total Fair value 26 34
Corporate bonds    
Investment securities available-for-sale    
Unrealized losses less than 12 months   (4,452)
Fair value less than 12 months   48,048
Unrealized losses over 12 months (12,494) (2,516)
Fair value over 12 months 57,001 14,484
Total Unrealized losses (12,494) (6,968)
Total Fair value $ 57,001 62,532
Obligations of state and political agencies.    
Held-to-maturity investment securities    
Unrealized losses less than 12 months   (3,336)
Fair value less than 12 months   18,788
Unrealized losses over 12 months   (14,400)
Fair value over 12 months   98,762
Total Unrealized losses   (17,736)
Total Fair value   $ 117,550