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SECURITIES - Scheduled Maturities of Securities AFS and the Related Weighted Average Yields (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
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Schedule Of Available For Sale Securities [Line Items] |  |
Amortized cost, less than one year | $ 9,565 | $ 9,604
Amortized cost, one through five years | 29,861 | 31,858
Amortized cost, five through ten years | 173,411 | 195,613
Amortized cost, after ten years | 60,708 | 961,487
Amortized cost, total | $ 273,545 | $ 1,198,562
Weighted average yield, less than one year | 1.06% | (2.28%)
Weighted average yield, one through five years | 1.99% | 2.06%
Weighted average yield, five through ten years | 3.34% | 3.03%
Weighted average yield, after ten years | 1.90% | 1.63%
Weighted average yield, total | 2.80% | 1.84%
Estimated fair value, less than one year | $ 9,558 | $ 9,599
Estimated fair value, one through five years | 29,445 | 32,000
Estimated fair value, five through ten years | 170,768 | 198,427
Estimated fair value, after ten years | 59,259 | 961,751
Estimated fair value, total | 269,030 | 1,201,777
U.S. Treasury |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized cost, one through five years | 897 | 499
Amortized cost, total | 897 | 499
Estimated fair value, one through five years | 854 | 490
Estimated fair value, total | 854 | 490
SBA securities |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized cost, less than one year | 39 | 70
Amortized cost, one through five years | 1,326 | 1,613
Amortized cost, five through ten years | 2,610 | 2,952
Amortized cost, after ten years | 21,717 | 23,335
Amortized cost, total | 25,692 | 27,970
Estimated fair value, less than one year | 39 | 70
Estimated fair value, one through five years | 1,323 | 1,613
Estimated fair value, five through ten years | 2,607 | 2,953
Estimated fair value, after ten years | 21,703 | 23,336
Estimated fair value, total | 25,672 | 27,972
Collateralized mortgage obligations |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized cost, one through five years | 319 | 710
Amortized cost, five through ten years | 742 | 802
Amortized cost, after ten years | 10,700 | 12,350
Amortized cost, total | 11,761 | 13,862
Estimated fair value, one through five years | 319 | 710
Estimated fair value, five through ten years | 703 | 799
Estimated fair value, after ten years | 10,162 | 12,316
Estimated fair value, total | 11,184 | 13,825
Corporate Bonds |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized cost, less than one year | 9,526 | 9,534
Amortized cost, one through five years | 10,019 | 10,519
Amortized cost, five through ten years | 128,371 | 128,438
Amortized cost, after ten years | 5,535 | 5,536
Amortized cost, total | 153,451 | 154,027
Estimated fair value, less than one year | 9,519 | 9,529
Estimated fair value, one through five years | 9,748 | 10,499
Estimated fair value, five through ten years | 127,257 | 130,754
Estimated fair value, after ten years | 5,239 | 5,594
Estimated fair value, total | 151,763 | 156,376
Agency Mortgage-backed Securities |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized cost, one through five years | 4,545 | 4,990
Amortized cost, five through ten years | 4,123 | 24,568
Amortized cost, after ten years | 1,708 | 898,988
Amortized cost, total | 10,376 | 928,546
Estimated fair value, one through five years | 4,431 | 5,082
Estimated fair value, five through ten years | 3,984 | 25,056
Estimated fair value, after ten years | 1,663 | 898,851
Estimated fair value, total | 10,078 | 928,989
Municipal bonds |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized cost, one through five years | 1,630 | 1,625
Amortized cost, five through ten years | 37,565 | 38,853
Amortized cost, after ten years | 11,542 | 11,574
Amortized cost, total | 50,737 | 52,052
Estimated fair value, one through five years | 1,645 | 1,704
Estimated fair value, five through ten years | 36,217 | 38,865
Estimated fair value, after ten years | 10,652 | 11,577
Estimated fair value, total | 48,514 | 52,146
Beneficial interest - FHLMC securitizations |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized cost, one through five years | 11,125 | 11,902
Amortized cost, after ten years | 9,506 | 9,704
Amortized cost, total | 20,631 | 21,606
Estimated fair value, one through five years | 11,125 | 11,902
Estimated fair value, after ten years | 9,840 | 10,077
Estimated fair value, total | $ 20,965 | $ 21,979

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