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INVESTMENT SECURITIES (Investment Securities by Contractual Maturity - AFS) (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 903,798 | $ 503,421
Gross Unrealized Gains | 964 | 10,692
Gross Unrealized Losses | 24,424 | 3,400
Fair Value | $ 880,338 | $ 510,713
Weighted Average Yield | 2.24% | 2.05%
Mortgage-backed securities |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 890,740 | $ 489,155
Gross Unrealized Gains | 875 | 10,555
Gross Unrealized Losses | 24,424 | 3,400
Fair Value | $ 867,191 | $ 496,310
Weighted Average Yield | 2.24% | 2.05%
Mortgage-backed securities | FNMA and FHLMC certificates |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 574,290 | $ 184,000
Gross Unrealized Gains | 2 | 2,502
Gross Unrealized Losses | 15,402 | 3,200
Fair Value | $ 558,890 | $ 183,302
Weighted Average Yield | 2.21% | 1.65%
Mortgage-backed securities | FNMA and FHLMC certificates | Due from 1 to 5 years |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 2,020 |
Gross Unrealized Gains | 0 |
Gross Unrealized Losses | 5 |
Fair Value | $ 2,015 |
Weighted Average Yield | 2.13% |
Mortgage-backed securities | FNMA and FHLMC certificates | Due from 5 to 10 years |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 82,101 | $ 90,560
Gross Unrealized Gains | 2 | 2,502
Gross Unrealized Losses | 1,168 | 0
Fair Value | $ 80,935 | $ 93,062
Weighted Average Yield | 1.94% | 1.94%
Mortgage-backed securities | FNMA and FHLMC certificates | Due after 10 years |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 490,169 | $ 93,440
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 14,229 | 3,200
Fair Value | $ 475,940 | $ 90,240
Weighted Average Yield | 2.25% | 1.37%
Mortgage-backed securities | GNMA Securities |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 295,018 | $ 281,061
Gross Unrealized Gains | 872 | 7,716
Gross Unrealized Losses | 8,694 | 199
Fair Value | $ 287,196 | $ 288,578
Weighted Average Yield | 2.32% | 2.32%
Mortgage-backed securities | GNMA Securities | Due from 1 to 5 years |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 16,836 | $ 10,536
Gross Unrealized Gains | 0 | 233
Gross Unrealized Losses | 146 | 1
Fair Value | $ 16,690 | $ 10,768
Weighted Average Yield | 1.63% | 1.66%
Mortgage-backed securities | GNMA Securities | Due from 5 to 10 years |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 16,470 | $ 26,419
Gross Unrealized Gains | 0 | 556
Gross Unrealized Losses | 327 | 0
Fair Value | $ 16,143 | $ 26,975
Weighted Average Yield | 1.88% | 1.80%
Mortgage-backed securities | GNMA Securities | Due after 10 years |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 261,712 | $ 244,106
Gross Unrealized Gains | 872 | 6,927
Gross Unrealized Losses | 8,221 | 198
Fair Value | $ 254,363 | $ 250,835
Weighted Average Yield | 2.40% | 2.40%
Mortgage-backed securities | CMOs issued by US government-sponsored agencies |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 21,432 | $ 24,094
Gross Unrealized Gains | 1 | 337
Gross Unrealized Losses | 328 | 1
Fair Value | $ 21,105 | $ 24,430
Weighted Average Yield | 1.96% | 1.96%
Mortgage-backed securities | CMOs issued by US government-sponsored agencies | Due from 1 to 5 years |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 1,523 | $ 1,788
Gross Unrealized Gains | 0 | 22
Gross Unrealized Losses | 24 | 0
Fair Value | $ 1,499 | $ 1,810
Weighted Average Yield | 1.70% | 1.70%
Mortgage-backed securities | CMOs issued by US government-sponsored agencies | Due from 5 to 10 years |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 18,584 | $ 20,705
Gross Unrealized Gains | 0 | 299
Gross Unrealized Losses | 300 | 0
Fair Value | $ 18,284 | $ 21,004
Weighted Average Yield | 1.80% | 1.81%
Mortgage-backed securities | CMOs issued by US government-sponsored agencies | Due after 10 years |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 1,325 | $ 1,601
Gross Unrealized Gains | 1 | 16
Gross Unrealized Losses | 4 | 1
Fair Value | $ 1,322 | $ 1,616
Weighted Average Yield | 4.53% | 4.24%
Investment securities |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 13,058 | $ 14,266
Gross Unrealized Gains | 89 | 137
Gross Unrealized Losses | 0 | 0
Fair Value | $ 13,147 | $ 14,403
Weighted Average Yield | 2.01% | 1.95%
Investment securities | US Treasury securities |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 10,735 | $ 10,737
Gross Unrealized Gains | 28 | 88
Gross Unrealized Losses | 0 | 0
Fair Value | $ 10,763 | $ 10,825
Weighted Average Yield | 1.49% | 1.48%
Investment securities | US Treasury securities | Due less than 1 year |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 10,735 | $ 10,737
Gross Unrealized Gains | 28 | 88
Gross Unrealized Losses | 0 | 0
Fair Value | $ 10,763 | $ 10,825
Weighted Average Yield | 1.49% | 1.48%
Investment securities | Obligations of US government-sponsored agencies |  |
Schedule of Investments [Line Items] |  |
Amortized Cost |  | $ 1,182
Gross Unrealized Gains |  | 1
Gross Unrealized Losses |  | 0
Fair Value |  | $ 1,183
Weighted Average Yield |  | 1.40%
Investment securities | Obligations of US government-sponsored agencies | Due less than 1 year |  |
Schedule of Investments [Line Items] |  |
Amortized Cost |  | $ 1,182
Gross Unrealized Gains |  | 1
Gross Unrealized Losses |  | 0
Fair Value |  | $ 1,183
Weighted Average Yield |  | 1.40%
Investment securities | Other debt securities |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 2,323 | $ 2,347
Gross Unrealized Gains | 61 | 48
Gross Unrealized Losses | 0 | 0
Fair Value | $ 2,384 | $ 2,395
Weighted Average Yield | 4.41% | 4.39%
Investment securities | Other debt securities | Due less than 1 year |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 500 | $ 500
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 0 | 0
Fair Value | $ 500 | $ 500
Weighted Average Yield | 0.57% | 0.57%
Investment securities | Other debt securities | Due from 1 to 5 years |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 1,823 | $ 1,847
Gross Unrealized Gains | 61 | 48
Gross Unrealized Losses | 0 | 0
Fair Value | $ 1,884 | $ 1,895
Weighted Average Yield | 5.46% | 5.43%

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