XML 58 R46.htm IDEA: XBRL DOCUMENT v3.24.2.u1
Investment Securities - Gross Unrealized Losses on Debt Securities (Detail) - USD ($)
$ in Thousands
Jun. 30, 2024
Dec. 31, 2023
Debt Securities Available for Sale    
Less than 12 months, Fair Value $ 51,941 $ 66,657
Less than 12 months, Unrealized Loss (300) (751)
12 months or more, Fair Value 1,684,551 1,997,383
12 months or more, Unrealized Loss (244,024) (231,595)
Total, Fair Value 1,736,492 2,064,040
Total, Unrealized Loss (244,324) (232,346)
Debt Securities Held to Maturity    
Less than 12 months, Fair Value 486 0
Less than 12 Months, Unrealized Loss (23) 0
12 months or more, Fair Value 111,863 123,271
12 months or more, Unrealized Loss (8,945) (8,374)
Total, Fair Value 112,349 123,271
Total, Unrealized Loss (8,968) (8,374)
Obligations of U.S. government agencies    
Debt Securities Available for Sale    
Less than 12 months, Fair Value 322 224
Less than 12 months, Unrealized Loss (3) 0
12 months or more, Fair Value 1,092,549 1,221,320
12 months or more, Unrealized Loss (178,079) (165,037)
Total, Fair Value 1,092,871 1,221,544
Total, Unrealized Loss (178,082) (165,037)
Debt Securities Held to Maturity    
Less than 12 months, Fair Value 0 0
Less than 12 Months, Unrealized Loss 0 0
12 months or more, Fair Value 110,872 122,259
12 months or more, Unrealized Loss (8,880) (8,331)
Total, Fair Value 110,872 122,259
Total, Unrealized Loss (8,880) (8,331)
Obligations of states and political subdivisions    
Debt Securities Available for Sale    
Less than 12 months, Fair Value 7,705 6,229
Less than 12 months, Unrealized Loss (225) (75)
12 months or more, Fair Value 208,951 216,497
12 months or more, Unrealized Loss (29,205) (26,697)
Total, Fair Value 216,656 222,726
Total, Unrealized Loss (29,430) (26,772)
Debt Securities Held to Maturity    
Less than 12 months, Fair Value 486 0
Less than 12 Months, Unrealized Loss (23) 0
12 months or more, Fair Value 991 1,012
12 months or more, Unrealized Loss (65) (43)
Total, Fair Value 1,477 1,012
Total, Unrealized Loss (88) (43)
Corporate bonds    
Debt Securities Available for Sale    
Less than 12 months, Fair Value 0 0
Less than 12 months, Unrealized Loss 0 0
12 months or more, Fair Value 5,810 5,602
12 months or more, Unrealized Loss (367) (571)
Total, Fair Value 5,810 5,602
Total, Unrealized Loss (367) (571)
Asset backed securities    
Debt Securities Available for Sale    
Less than 12 months, Fair Value 43,914 15,928
Less than 12 months, Unrealized Loss (72) (93)
12 months or more, Fair Value 101,081 264,731
12 months or more, Unrealized Loss (1,432) (4,095)
Total, Fair Value 144,995 280,659
Total, Unrealized Loss (1,504) (4,188)
Non-agency collateralized mortgage obligations    
Debt Securities Available for Sale    
Less than 12 months, Fair Value 0 44,276
Less than 12 months, Unrealized Loss 0 (583)
12 months or more, Fair Value 276,160 289,233
12 months or more, Unrealized Loss (34,941) (35,195)
Total, Fair Value 276,160 333,509
Total, Unrealized Loss $ (34,941) $ (35,778)