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SECURITIES (Schedule of Gross Unrealized Losses and Fair Value of Investments) (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Debt and Equity Securities, FV-NI [Line Items] |  |
Less than 12 months, Fair Value | $ 266,222 | $ 1,285,632
Less than 12 Months, Unrealized Losses | (5,952) | (140,392)
More than 12 Months, Fair Value | 1,767,901 | 1,392,153
More than 12 Months, Unrealized Losses | (517,456) | (322,446)
Total, Fair Value | 2,034,123 | 2,677,785
Unrealized Losses, Total | (523,408) | (462,838)
U.S. government and agency securities |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Less than 12 months, Fair Value | 59,568 | 2,594
Less than 12 Months, Unrealized Losses | (349) | (166)
More than 12 Months, Fair Value | 2,169 | 59,269
More than 12 Months, Unrealized Losses | (34) | (8,087)
Total, Fair Value | 61,737 | 61,863
Unrealized Losses, Total | (383) | (8,253)
Obligations of states and political subdivisions |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Less than 12 months, Fair Value | 16,023 | 588,668
Less than 12 Months, Unrealized Losses | (3,567) | (86,895)
More than 12 Months, Fair Value | 399,438 | 187,375
More than 12 Months, Unrealized Losses | (166,313) | (65,806)
Total, Fair Value | 415,461 | 776,043
Unrealized Losses, Total | (169,880) | (152,701)
Corporate and other bonds |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Less than 12 months, Fair Value | 100,231 | 206,861
Less than 12 Months, Unrealized Losses | (776) | (15,019)
More than 12 Months, Fair Value | 142,587 | 17,121
More than 12 Months, Unrealized Losses | (24,222) | (2,580)
Total, Fair Value | 242,818 | 223,982
Unrealized Losses, Total | (24,998) | (17,599)
Commercial |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Less than 12 months, Fair Value | 15,074 | 139,980
Less than 12 Months, Unrealized Losses | (709) | (9,255)
More than 12 Months, Fair Value | 205,207 | 155,743
More than 12 Months, Unrealized Losses | (52,155) | (34,257)
Total, Fair Value | 220,281 | 295,723
Unrealized Losses, Total | (52,864) | (43,512)
Residential |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Less than 12 months, Fair Value | 75,326 | 347,529
Less than 12 Months, Unrealized Losses | (551) | (29,057)
More than 12 Months, Fair Value | 1,018,500 | 972,645
More than 12 Months, Unrealized Losses | (274,732) | (211,716)
Total, Fair Value | 1,093,826 | 1,320,174
Unrealized Losses, Total | (275,283) | (240,773)
Agency | Commercial |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Less than 12 months, Fair Value | 15,074 | 73,362
Less than 12 Months, Unrealized Losses | (709) | (7,024)
More than 12 Months, Fair Value | 135,725 | 127,193
More than 12 Months, Unrealized Losses | (49,580) | (32,244)
Total, Fair Value | 150,799 | 200,555
Unrealized Losses, Total | (50,289) | (39,268)
Agency | Residential |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Less than 12 months, Fair Value | 55,550 | 328,590
Less than 12 Months, Unrealized Losses | (461) | (27,769)
More than 12 Months, Fair Value | 972,755 | 929,581
More than 12 Months, Unrealized Losses | (267,691) | (206,192)
Total, Fair Value | 1,028,305 | 1,258,171
Unrealized Losses, Total | (268,152) | (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 | 69,482 | 28,550
More than 12 Months, Unrealized Losses | (2,575) | (2,013)
Total, Fair Value | 69,482 | 95,168
Unrealized Losses, Total | (2,575) | (4,244)
Non-agency | Residential |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Less than 12 months, Fair Value | 19,776 | 18,939
Less than 12 Months, Unrealized Losses | (90) | (1,288)
More than 12 Months, Fair Value | 45,745 | 43,064
More than 12 Months, Unrealized Losses | (7,041) | (5,524)
Total, Fair Value | 65,521 | 62,003
Unrealized Losses, Total | $ (7,131) | $ (6,812)

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