Annual report pursuant to Section 13 and 15(d)

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

v3.22.4
SECURITIES (Schedule of Gross Unrealized Losses and Fair Value of Investments) (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value $ 1,285,632 $ 1,733,749
Less than 12 Months, Unrealized Losses (140,392) (28,409)
More than 12 Months, Fair Value 1,392,153 139,747
More than 12 Months, Unrealized Losses (322,446) (3,923)
Total, Fair Value 2,677,785 1,873,496
Unrealized Losses, Total (462,838) (32,332)
U.S. government and agency securities    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 2,594 64,474
Less than 12 Months, Unrealized Losses (166) (115)
More than 12 Months, Fair Value 59,269 3,900
More than 12 Months, Unrealized Losses (8,087) (45)
Total, Fair Value 61,863 68,374
Unrealized Losses, Total (8,253) (160)
Obligations of states and political subdivisions    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 588,668 249,701
Less than 12 Months, Unrealized Losses (86,895) (2,020)
More than 12 Months, Fair Value 187,375 2,123
More than 12 Months, Unrealized Losses (65,806) (53)
Total, Fair Value 776,043 251,824
Unrealized Losses, Total (152,701) (2,073)
Corporate and other bonds    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 206,861 21,134
Less than 12 Months, Unrealized Losses (15,019) (177)
More than 12 Months, Fair Value 17,121 703
More than 12 Months, Unrealized Losses (2,580) (1)
Total, Fair Value 223,982 21,837
Unrealized Losses, Total (17,599) (178)
Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 139,980 209,347
Less than 12 Months, Unrealized Losses (9,255) (4,366)
More than 12 Months, Fair Value 155,743 14,201
More than 12 Months, Unrealized Losses (34,257) (270)
Total, Fair Value 295,723 223,548
Unrealized Losses, Total (43,512) (4,636)
Residential    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 347,529 1,189,093
Less than 12 Months, Unrealized Losses (29,057) (21,731)
More than 12 Months, Fair Value 972,645 118,820
More than 12 Months, Unrealized Losses (211,716) (3,554)
Total, Fair Value 1,320,174 1,307,913
Unrealized Losses, Total (240,773) (25,285)
Agency | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 73,362 175,588
Less than 12 Months, Unrealized Losses (7,024) (4,053)
More than 12 Months, Fair Value 127,193 3,172
More than 12 Months, Unrealized Losses (32,244) (162)
Total, Fair Value 200,555 178,760
Unrealized Losses, Total (39,268) (4,215)
Agency | Residential    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 328,590 1,140,701
Less than 12 Months, Unrealized Losses (27,769) (21,147)
More than 12 Months, Fair Value 929,581 106,104
More than 12 Months, Unrealized Losses (206,192) (3,190)
Total, Fair Value 1,258,171 1,246,805
Unrealized Losses, Total (233,961) (24,337)
Non-agency | Commercial    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 66,618 33,759
Less than 12 Months, Unrealized Losses (2,231) (313)
More than 12 Months, Fair Value 28,550 11,029
More than 12 Months, Unrealized Losses (2,013) (108)
Total, Fair Value 95,168 44,788
Unrealized Losses, Total (4,244) (421)
Non-agency | Residential    
Debt and Equity Securities, FV-NI [Line Items]    
Less than 12 months, Fair Value 18,939 48,392
Less than 12 Months, Unrealized Losses (1,288) (584)
More than 12 Months, Fair Value 43,064 12,716
More than 12 Months, Unrealized Losses (5,524) (364)
Total, Fair Value 62,003 61,108
Unrealized Losses, Total $ (6,812) $ (948)