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v3.23.3

Securities - Continuous Unrealized Losses (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
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Schedule of Available-for-sale Debt Securities |  |
Available-for-sale debt securities, Less than 12 Months, Fair Value | $ 382,537 | $ 1,451,466
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months | (2,011) | (104,682)
Available-for-sale debt securities, 12 Months or More, Fair Value | 5,327,754 | 4,332,275
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More | (934,621) | (740,048)
Available-for-sale debt securities fair value, Total | 5,710,291 | 5,783,741
Available-for-sale debt securities, Gross Unrealized Loss, Total | (936,632) | (844,730)
U.S. Treasury securities |  |
Schedule of Available-for-sale Debt Securities |  |
Available-for-sale debt securities, Less than 12 Months, Fair Value | 0 | 131,843
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months | 0 | (8,761)
Available-for-sale debt securities, 12 Months or More, Fair Value | 605,730 | 474,360
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More | (70,562) | (61,342)
Available-for-sale debt securities fair value, Total | 605,730 | 606,203
Available-for-sale debt securities, Gross Unrealized Loss, Total | (70,562) | (70,103)
U.S. government agency and U.S. government-sponsored enterprise debt securities |  |
Schedule of Available-for-sale Debt Securities |  |
Available-for-sale debt securities, Less than 12 Months, Fair Value | 199,139 | 97,403
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months | (861) | (6,902)
Available-for-sale debt securities, 12 Months or More, Fair Value | 248,325 | 214,136
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More | (64,387) | (49,364)
Available-for-sale debt securities fair value, Total | 447,464 | 311,539
Available-for-sale debt securities, Gross Unrealized Loss, Total | (65,248) | (56,266)
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities - Commercial mortgage-backed securities |  |
Schedule of Available-for-sale Debt Securities |  |
Available-for-sale debt securities, Less than 12 Months, Fair Value | 4,434 | 252,144
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months | (96) | (30,029)
Available-for-sale debt securities, 12 Months or More, Fair Value | 457,898 | 248,125
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More | (82,658) | (47,094)
Available-for-sale debt securities fair value, Total | 462,332 | 500,269
Available-for-sale debt securities, Gross Unrealized Loss, Total | (82,754) | (77,123)
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities - Residential mortgage-backed securities |  |
Schedule of Available-for-sale Debt Securities |  |
Available-for-sale debt securities, Less than 12 Months, Fair Value | 63,660 | 307,536
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months | (517) | (20,346)
Available-for-sale debt securities, 12 Months or More, Fair Value | 1,627,451 | 1,448,658
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More | (288,440) | (228,554)
Available-for-sale debt securities fair value, Total | 1,691,111 | 1,756,194
Available-for-sale debt securities, Gross Unrealized Loss, Total | (288,957) | (248,900)
Municipal securities |  |
Schedule of Available-for-sale Debt Securities |  |
Available-for-sale debt securities, Less than 12 Months, Fair Value | 5,891 | 95,655
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months | (288) | (10,194)
Available-for-sale debt securities, 12 Months or More, Fair Value | 237,665 | 159,439
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More | (57,564) | (36,594)
Available-for-sale debt securities fair value, Total | 243,556 | 255,094
Available-for-sale debt securities, Gross Unrealized Loss, Total | (57,852) | (46,788)
Non-agency commercial mortgage-backed securities |  |
Schedule of Available-for-sale Debt Securities |  |
Available-for-sale debt securities, Less than 12 Months, Fair Value | 0 | 106,184
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months | 0 | (3,309)
Available-for-sale debt securities, 12 Months or More, Fair Value | 365,320 | 282,301
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More | (53,131) | (46,087)
Available-for-sale debt securities fair value, Total | 365,320 | 388,485
Available-for-sale debt securities, Gross Unrealized Loss, Total | (53,131) | (49,396)
Non-agency residential mortgage-backed securities |  |
Schedule of Available-for-sale Debt Securities |  |
Available-for-sale debt securities, Less than 12 Months, Fair Value | 0 | 22,715
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months | 0 | (1,546)
Available-for-sale debt securities, 12 Months or More, Fair Value | 570,787 | 626,509
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More | (116,887) | (111,432)
Available-for-sale debt securities fair value, Total | 570,787 | 649,224
Available-for-sale debt securities, Gross Unrealized Loss, Total | (116,887) | (112,978)
Corporate debt securities |  |
Schedule of Available-for-sale Debt Securities |  |
Available-for-sale debt securities, Less than 12 Months, Fair Value | 0 | 173,595
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months | 0 | (17,907)
Available-for-sale debt securities, 12 Months or More, Fair Value | 475,434 | 352,679
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More | (178,067) | (129,321)
Available-for-sale debt securities fair value, Total | 475,434 | 526,274
Available-for-sale debt securities, Gross Unrealized Loss, Total | (178,067) | (147,228)
Foreign government bonds |  |
Schedule of Available-for-sale Debt Securities |  |
Available-for-sale debt securities, Less than 12 Months, Fair Value | 109,413 | 107,576
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months | (249) | (429)
Available-for-sale debt securities, 12 Months or More, Fair Value | 85,433 | 36,143
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More | (14,567) | (13,857)
Available-for-sale debt securities fair value, Total | 194,846 | 143,719
Available-for-sale debt securities, Gross Unrealized Loss, Total | (14,816) | (14,286)
Asset-backed securities |  |
Schedule of Available-for-sale Debt Securities |  |
Available-for-sale debt securities, Less than 12 Months, Fair Value | 0 | 12,450
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months | 0 | (524)
Available-for-sale debt securities, 12 Months or More, Fair Value | 43,757 | 36,626
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More | (1,062) | (1,552)
Available-for-sale debt securities fair value, Total | 43,757 | 49,076
Available-for-sale debt securities, Gross Unrealized Loss, Total | (1,062) | (2,076)
Collateralized loan obligations (“CLOs”) |  |
Schedule of Available-for-sale Debt Securities |  |
Available-for-sale debt securities, Less than 12 Months, Fair Value | 0 | 144,365
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months | 0 | (4,735)
Available-for-sale debt securities, 12 Months or More, Fair Value | 609,954 | 453,299
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More | (7,296) | (14,851)
Available-for-sale debt securities fair value, Total | 609,954 | 597,664
Available-for-sale debt securities, Gross Unrealized Loss, Total | $ (7,296) | $ (19,586)

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