Annual report pursuant to Section 13 and 15(d)

SECURITIES AND OTHER INVESTMENTS (Schedule of Gross Unrealized Losses and Fair Value of Investments) (Details)

v3.24.0.1
SECURITIES AND OTHER INVESTMENTS (Schedule of Gross Unrealized Losses and Fair Value of Investments) (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value $ 205,602 $ 1,285,632
Less than 12 Months, Unrealized Losses (3,700) (140,392)
More than 12 Months, Fair Value 1,862,395 1,392,153
More than 12 Months, Unrealized Losses (382,167) (322,446)
Total, Fair Value 2,067,997 2,677,785
Unrealized Losses, Total (385,867) (462,838)
U.S. government and agency securities    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 0 2,594
Less than 12 Months, Unrealized Losses 0 (166)
More than 12 Months, Fair Value 1,980 59,269
More than 12 Months, Unrealized Losses (34) (8,087)
Total, Fair Value 1,980 61,863
Unrealized Losses, Total (34) (8,253)
Obligations of states and political subdivisions    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 11,758 588,668
Less than 12 Months, Unrealized Losses (2,090) (86,895)
More than 12 Months, Fair Value 455,931 187,375
More than 12 Months, Unrealized Losses (109,361) (65,806)
Total, Fair Value 467,689 776,043
Unrealized Losses, Total (111,451) (152,701)
Corporate and other bonds    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 89,450 206,861
Less than 12 Months, Unrealized Losses (531) (15,019)
More than 12 Months, Fair Value 144,155 17,121
More than 12 Months, Unrealized Losses (19,243) (2,580)
Total, Fair Value 233,605 223,982
Unrealized Losses, Total (19,774) (17,599)
Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 35,665 139,980
Less than 12 Months, Unrealized Losses (547) (9,255)
More than 12 Months, Fair Value 208,435 155,743
More than 12 Months, Unrealized Losses (42,599) (34,257)
Total, Fair Value 244,100 295,723
Unrealized Losses, Total (43,146) (43,512)
Residential    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 68,729 347,529
Less than 12 Months, Unrealized Losses (532) (29,057)
More than 12 Months, Fair Value 1,051,894 972,645
More than 12 Months, Unrealized Losses (210,930) (211,716)
Total, Fair Value 1,120,623 1,320,174
Unrealized Losses, Total (211,462) (240,773)
Agency | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 35,665 73,362
Less than 12 Months, Unrealized Losses (547) (7,024)
More than 12 Months, Fair Value 143,657 127,193
More than 12 Months, Unrealized Losses (40,634) (32,244)
Total, Fair Value 179,322 200,555
Unrealized Losses, Total (41,181) (39,268)
Agency | Residential    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 59,707 328,590
Less than 12 Months, Unrealized Losses (491) (27,769)
More than 12 Months, Fair Value 1,011,809 929,581
More than 12 Months, Unrealized Losses (205,144) (206,192)
Total, Fair Value 1,071,516 1,258,171
Unrealized Losses, Total (205,635) (233,961)
Non-agency | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 0 66,618
Less than 12 Months, Unrealized Losses 0 (2,231)
More than 12 Months, Fair Value 64,778 28,550
More than 12 Months, Unrealized Losses (1,965) (2,013)
Total, Fair Value 64,778 95,168
Unrealized Losses, Total (1,965) (4,244)
Non-agency | Residential    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 9,022 18,939
Less than 12 Months, Unrealized Losses (41) (1,288)
More than 12 Months, Fair Value 40,085 43,064
More than 12 Months, Unrealized Losses (5,786) (5,524)
Total, Fair Value 49,107 62,003
Unrealized Losses, Total $ (5,827) $ (6,812)