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DEBT SECURITIES - Schedule of Debt Securities in an Unrealized Loss Position (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Fair Value |  |
Less than 12 months | $ 185,148 | $ 13,033
12 months or more | 1,281,595 | 2,049,784
Total | 1,466,743 | 2,062,817
Unrealized Losses |  |
Less than 12 months | (895) | (65)
12 months or more | (229,430) | (247,180)
Total | (230,325) | (247,245)
Fair Value |  |
12 months or more | 675,053 | 730,397
Total | 675,053 | 730,397
Unrealized Losses |  |
12 months or more | (151,577) | (142,231)
Total | (151,577) | (142,231)
U.S. Treasury securities |  |
Fair Value |  |
Less than 12 months |  | 0
12 months or more |  | 15,946
Total |  | 15,946
Unrealized Losses |  |
Less than 12 months |  | 0
12 months or more |  | (85)
Total |  | (85)
Obligations of U.S. government corporations and agencies |  |
Fair Value |  |
Less than 12 months | 0 | 0
12 months or more | 1,328 | 5,709
Total | 1,328 | 5,709
Unrealized Losses |  |
Less than 12 months | 0 | 0
12 months or more | (8) | (58)
Total | (8) | (58)
Obligations of states and political subdivisions |  |
Fair Value |  |
Less than 12 months | 11,234 | 11,442
12 months or more | 119,723 | 146,797
Total | 130,957 | 158,239
Unrealized Losses |  |
Less than 12 months | (209) | (54)
12 months or more | (16,527) | (17,972)
Total | (16,736) | (18,026)
Asset-backed securities |  |
Fair Value |  |
Less than 12 months | 14,997 | 0
12 months or more | 0 | 468,223
Total | 14,997 | 468,223
Unrealized Losses |  |
Less than 12 months | (3) | 0
12 months or more | 0 | (1,823)
Total | (3) | (1,823)
Commercial mortgage-backed securities |  |
Fair Value |  |
Less than 12 months | 6,238 | 0
12 months or more | 85,936 | 103,509
Total | 92,174 | 103,509
Unrealized Losses |  |
Less than 12 months | (42) | 0
12 months or more | (15,089) | (15,535)
Total | (15,131) | (15,535)
Fair Value |  |
12 months or more | 338,288 | 357,526
Total | 338,288 | 357,526
Unrealized Losses |  |
12 months or more | (77,242) | (71,000)
Total | (77,242) | (71,000)
Residential mortgage-backed securities |  |
Fair Value |  |
Less than 12 months | 152,081 | 141
12 months or more | 930,642 | 1,110,906
Total | 1,082,723 | 1,111,047
Unrealized Losses |  |
Less than 12 months | (640) | (1)
12 months or more | (191,259) | (195,546)
Total | (191,899) | (195,547)
Fair Value |  |
12 months or more | 336,765 | 372,871
Total | 336,765 | 372,871
Unrealized Losses |  |
12 months or more | (74,335) | (71,231)
Total | (74,335) | (71,231)
Corporate debt securities |  |
Fair Value |  |
Less than 12 months | 598 | 1,450
12 months or more | 143,966 | 198,694
Total | 144,564 | 200,144
Unrealized Losses |  |
Less than 12 months | (1) | (10)
12 months or more | (6,547) | (16,161)
Total | $ (6,548) | $ (16,171)

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