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SECURITIES - Schedule of Securities Available (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Sep. 30, 2023
--- | --- | ---
Securities AFS |  |
Amortized Cost | $ 1,944,298 | $ 2,143,333
Fair Value | 1,741,221 | 1,804,228
Amortized Cost |  |
Due in one year or less | 1,826 | 5,023
Due after one year through five years | 14,772 | 11,175
Due after five years through ten years | 70,894 | 79,139
Due after ten years | 463,257 | 552,360
Total Amortized Cost | 550,749 | 647,697
Mortgage-backed securities | 1,393,549 | 1,495,636
Amortized Cost | 1,944,298 | 2,143,333
Fair Value |  |
Due in one year or less | 1,796 | 4,971
Due after one year through five years | 14,211 | 10,292
Due after five years through ten years | 63,636 | 66,428
Due after ten years | 430,210 | 497,012
Total Fair Value | 509,853 | 578,703
Mortgage-backed securities | 1,231,368 | 1,225,525
Total debt securities AFS | 1,741,221 | 1,804,228
Securities HTM |  |
Amortized Cost | 33,092 | 36,591
Gross Unrealized Gains | 0 | 0
Gross Unrealized (Losses) | (2,856) | (5,166)
Fair Value | 30,236 | 31,425
Held-to-maturity securities in a continuous unrealized loss position [Abstract] |  |
LESS THAN 12 MONTHS, Fair Value | 0 | 0
LESS THAN 12 MONTHS, Gross Unrealized (Losses) | 0 | 0
OVER 12 MONTHS, Fair Value | 30,236 | 31,425
OVER 12 MONTHS, Gross Unrealized (Losses) | (2,856) | (5,166)
TOTAL, Fair Value | 30,236 | 31,425
TOTAL, Gross Unrealized (Losses) | (2,856) | (5,166)
Amortized Cost |  |
Due after ten years | 31,060 | 34,415
Total | 31,060 | 34,415
Mortgage-backed securities | 2,032 | 2,176
Total debt securities HTM | 33,092 | 36,591
Fair Value |  |
Due after ten years | 28,392 | 29,571
Total | 28,392 | 29,571
Mortgage-backed securities | 1,844 | 1,854
Fair Value | 30,236 | 31,425
Corporate securities |  |
Securities AFS |  |
Amortized Cost | 25,000 | 25,000
Gross Unrealized Gains | 0 | 0
Gross Unrealized (Losses) | (5,250) | (6,750)
Fair Value | 19,750 | 18,250
Available-for-sale securities in a continuous unrealized loss position [Abstract] |  |
Fair Value, Less than 12 months | 0 | 0
Unrealized (Losses), Less than 12 months | 0 | 0
Fair Value, 12 Months or Longer | 19,750 | 18,250
Unrealized (Losses), 12 Months or Longer | (5,250) | (6,750)
Fair Value, Total | 19,750 | 18,250
Unrealized (Losses), Total | (5,250) | (6,750)
Amortized Cost |  |
Amortized Cost | 25,000 | 25,000
Fair Value |  |
Total debt securities AFS | 19,750 | 18,250
SBA securities |  |
Securities AFS |  |
Amortized Cost | 86,036 | 95,549
Gross Unrealized Gains | 0 | 0
Gross Unrealized (Losses) | (4,101) | (10,307)
Fair Value | 81,935 | 85,242
Available-for-sale securities in a continuous unrealized loss position [Abstract] |  |
Fair Value, Less than 12 months | 0 | 22,327
Unrealized (Losses), Less than 12 months | 0 | (1,919)
Fair Value, 12 Months or Longer | 81,935 | 62,915
Unrealized (Losses), 12 Months or Longer | (4,101) | (8,388)
Fair Value, Total | 81,935 | 85,242
Unrealized (Losses), Total | (4,101) | (10,307)
Amortized Cost |  |
Amortized Cost | 86,036 | 95,549
Fair Value |  |
Total debt securities AFS | 81,935 | 85,242
Obligations of states and political subdivisions |  |
Securities AFS |  |
Amortized Cost | 501 | 2,368
Gross Unrealized Gains | 0 | 0
Gross Unrealized (Losses) | (21) | (79)
Fair Value | 480 | 2,289
Available-for-sale securities in a continuous unrealized loss position [Abstract] |  |
Fair Value, Less than 12 months | 0 | 0
Unrealized (Losses), Less than 12 months | 0 | 0
Fair Value, 12 Months or Longer | 280 | 2,289
Unrealized (Losses), 12 Months or Longer | (21) | (79)
Fair Value, Total | 280 | 2,289
Unrealized (Losses), Total | (21) | (79)
Amortized Cost |  |
Amortized Cost | 501 | 2,368
Fair Value |  |
Total debt securities AFS | 480 | 2,289
Non-bank qualified obligations of states and political subdivisions |  |
Securities AFS |  |
Amortized Cost | 246,233 | 269,396
Gross Unrealized Gains | 44 | 0
Gross Unrealized (Losses) | (28,287) | (42,673)
Fair Value | 217,990 | 226,723
Available-for-sale securities in a continuous unrealized loss position [Abstract] |  |
Fair Value, Less than 12 months | 0 | 5,010
Unrealized (Losses), Less than 12 months | 0 | (83)
Fair Value, 12 Months or Longer | 215,956 | 221,714
Unrealized (Losses), 12 Months or Longer | (28,287) | (42,590)
Fair Value, Total | 215,956 | 226,723
Unrealized (Losses), Total | (28,287) | (42,673)
Amortized Cost |  |
Amortized Cost | 246,233 | 269,396
Fair Value |  |
Total debt securities AFS | 217,990 | 226,723
Securities HTM |  |
Amortized Cost | 31,060 | 34,415
Gross Unrealized Gains | 0 | 0
Gross Unrealized (Losses) | (2,668) | (4,844)
Fair Value | 28,392 | 29,571
Held-to-maturity securities in a continuous unrealized loss position [Abstract] |  |
LESS THAN 12 MONTHS, Fair Value | 0 | 0
LESS THAN 12 MONTHS, Gross Unrealized (Losses) | 0 | 0
OVER 12 MONTHS, Fair Value | 28,392 | 29,571
OVER 12 MONTHS, Gross Unrealized (Losses) | (2,668) | (4,844)
TOTAL, Fair Value | 28,392 | 29,571
TOTAL, Gross Unrealized (Losses) | (2,668) | (4,844)
Amortized Cost |  |
Total debt securities HTM | 31,060 | 34,415
Fair Value |  |
Fair Value | 28,392 | 29,571
Asset-backed securities |  |
Securities AFS |  |
Amortized Cost | 192,979 | 255,384
Gross Unrealized Gains | 337 | 234
Gross Unrealized (Losses) | (3,618) | (9,419)
Fair Value | 189,698 | 246,199
Available-for-sale securities in a continuous unrealized loss position [Abstract] |  |
Fair Value, Less than 12 months | 52,101 | 46,528
Unrealized (Losses), Less than 12 months | (176) | (224)
Fair Value, 12 Months or Longer | 88,576 | 115,608
Unrealized (Losses), 12 Months or Longer | (3,442) | (9,195)
Fair Value, Total | 140,677 | 162,136
Unrealized (Losses), Total | (3,618) | (9,419)
Amortized Cost |  |
Amortized Cost | 192,979 | 255,384
Fair Value |  |
Total debt securities AFS | 189,698 | 246,199
Mortgage-backed securities |  |
Securities AFS |  |
Amortized Cost | 1,393,549 | 1,495,636
Gross Unrealized Gains | 84 | 0
Gross Unrealized (Losses) | (162,265) | (270,111)
Fair Value | 1,231,368 | 1,225,525
Available-for-sale securities in a continuous unrealized loss position [Abstract] |  |
Fair Value, Less than 12 months | 2,377 | 18,311
Unrealized (Losses), Less than 12 months | (15) | (944)
Fair Value, 12 Months or Longer | 1,215,781 | 1,207,214
Unrealized (Losses), 12 Months or Longer | (162,250) | (269,167)
Fair Value, Total | 1,218,158 | 1,225,525
Unrealized (Losses), Total | (162,265) | (270,111)
Amortized Cost |  |
Amortized Cost | 1,393,549 | 1,495,636
Fair Value |  |
Total debt securities AFS | 1,231,368 | 1,225,525
Securities HTM |  |
Amortized Cost | 2,032 | 2,176
Gross Unrealized Gains | 0 | 0
Gross Unrealized (Losses) | (188) | (322)
Fair Value | 1,844 | 1,854
Held-to-maturity securities in a continuous unrealized loss position [Abstract] |  |
LESS THAN 12 MONTHS, Fair Value | 0 | 0
LESS THAN 12 MONTHS, Gross Unrealized (Losses) | 0 | 0
OVER 12 MONTHS, Fair Value | 1,844 | 1,854
OVER 12 MONTHS, Gross Unrealized (Losses) | (188) | (322)
TOTAL, Fair Value | 1,844 | 1,854
TOTAL, Gross Unrealized (Losses) | (188) | (322)
Amortized Cost |  |
Total debt securities HTM | 2,032 | 2,176
Fair Value |  |
Fair Value | 1,844 | 1,854
Total debt securities AFS |  |
Securities AFS |  |
Amortized Cost | 1,944,298 | 2,143,333
Gross Unrealized Gains | 465 | 234
Gross Unrealized (Losses) | (203,542) | (339,339)
Fair Value | 1,741,221 | 1,804,228
Available-for-sale securities in a continuous unrealized loss position [Abstract] |  |
Fair Value, Less than 12 months | 54,478 | 92,176
Unrealized (Losses), Less than 12 months | (191) | (3,170)
Fair Value, 12 Months or Longer | 1,622,278 | 1,627,990
Unrealized (Losses), 12 Months or Longer | (203,351) | (336,169)
Fair Value, Total | 1,676,756 | 1,720,165
Unrealized (Losses), Total | (203,542) | (339,339)
Amortized Cost |  |
Amortized Cost | 1,944,298 | 2,143,333
Fair Value |  |
Total debt securities AFS | $ 1,741,221 | $ 1,804,228

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