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DEBT SECURITIES - Schedule of Debt Securities in an Unrealized or Unrecognized Loss Position (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Fair Value |  |
Less than 12 months | $ 175,459 | $ 13,033
12 months or more | 1,547,816 | 2,049,784
Total | 1,723,275 | 2,062,817
Unrealized Losses |  |
Less than 12 months | (206) | (65)
12 months or more | (246,591) | (247,180)
Total | (246,797) | (247,245)
Fair Value |  |
12 months or more | 697,455 | 730,397
Total | 697,455 | 730,397
Unrecognized Losses |  |
12 months or more | (153,806) | (142,231)
Total | (153,806) | (142,231)
U.S. Treasury securities |  |
Fair Value |  |
Less than 12 months | 0 | 0
12 months or more | 497 | 15,946
Total | 497 | 15,946
Unrealized Losses |  |
Less than 12 months | 0 | 0
12 months or more | (3) | (85)
Total | (3) | (85)
Obligations of U.S. government corporations and agencies |  |
Fair Value |  |
Less than 12 months | 0 | 0
12 months or more | 3,686 | 5,709
Total | 3,686 | 5,709
Unrealized Losses |  |
Less than 12 months | 0 | 0
12 months or more | (11) | (58)
Total | (11) | (58)
Obligations of states and political subdivisions |  |
Fair Value |  |
Less than 12 months | 5,465 | 11,442
12 months or more | 135,744 | 146,797
Total | 141,209 | 158,239
Unrealized Losses |  |
Less than 12 months | (64) | (54)
12 months or more | (18,200) | (17,972)
Total | (18,264) | (18,026)
Asset-backed securities |  |
Fair Value |  |
Less than 12 months | 159,674 | 0
12 months or more | 184,078 | 468,223
Total | 343,752 | 468,223
Unrealized Losses |  |
Less than 12 months | (86) | 0
12 months or more | (383) | (1,823)
Total | (469) | (1,823)
Commercial mortgage-backed securities |  |
Fair Value |  |
Less than 12 months | 0 | 0
12 months or more | 88,867 | 103,509
Total | 88,867 | 103,509
Unrealized Losses |  |
Less than 12 months | 0 | 0
12 months or more | (15,741) | (15,535)
Total | (15,741) | (15,535)
Fair Value |  |
12 months or more | 345,067 | 357,526
Total | 345,067 | 357,526
Unrecognized Losses |  |
12 months or more | (77,024) | (71,000)
Total | (77,024) | (71,000)
Residential mortgage-backed securities |  |
Fair Value |  |
Less than 12 months | 5,905 | 141
12 months or more | 987,618 | 1,110,906
Total | 993,523 | 1,111,047
Unrealized Losses |  |
Less than 12 months | (37) | (1)
12 months or more | (201,211) | (195,546)
Total | (201,248) | (195,547)
Fair Value |  |
12 months or more | 352,388 | 372,871
Total | 352,388 | 372,871
Unrecognized Losses |  |
12 months or more | (76,782) | (71,231)
Total | (76,782) | (71,231)
Corporate debt securities |  |
Fair Value |  |
Less than 12 months | 4,415 | 1,450
12 months or more | 147,326 | 198,694
Total | 151,741 | 200,144
Unrealized Losses |  |
Less than 12 months | (19) | (10)
12 months or more | (11,042) | (16,161)
Total | $ (11,061) | $ (16,171)

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