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FAIR VALUE OF FINANCIAL INSTRUMENTS (Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020 | Sep. 30, 2020
--- | --- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Fair value | $ 607,474 | $ 271,169 |
Amount of transfers of assets measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2 | 0 |  | $ 0
Amount of transfers of assets measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1 | 0 |  | $ 0
Fair value assets measured at fair value on a non-recurring basis | 0 | 0 |
Fair Value, Measurements, Recurring [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Fair value liability | 0 |  |
Carrying Amount | Residential mortgage securities | Fair Value, Measurements, Recurring [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Fair value | 501,431 | 194,688 |
Carrying Amount | Commercial mortgage securities | Fair Value, Measurements, Recurring [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Fair value | 18,256 | 33,492 |
Carrying Amount | CRA mutual fund | Fair Value, Measurements, Recurring [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Fair value | 2,289 | 2,313 |
Carrying Amount | Derivative assets - interest rate cap | Fair Value, Measurements, Recurring [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Fair value | 2,086 | 770 |
Carrying Amount | Asset-backed Securities | Fair Value, Measurements, Recurring [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Fair value | 4,733 |  |
Carrying Amount | U.S. Government agency securities | Fair Value, Measurements, Recurring [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Fair value | 67,231 | 37,916 |
Carrying Amount | Securities issued by states and political subdivisions in the U.S | Fair Value, Measurements, Recurring [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Fair value | 11,517 |  |
Fair Value, Inputs, Level 1 | CRA mutual fund | Fair Value, Measurements, Recurring [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Fair value | 2,289 | 2,313 |
Fair Value, Inputs, Level 2 | Residential mortgage securities | Fair Value, Measurements, Recurring [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Fair value | 501,431 | 194,688 |
Fair Value, Inputs, Level 2 | Commercial mortgage securities | Fair Value, Measurements, Recurring [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Fair value | 18,256 | 33,492 |
Fair Value, Inputs, Level 2 | Derivative assets - interest rate cap | Fair Value, Measurements, Recurring [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Fair value | 2,086 | 770 |
Fair Value, Inputs, Level 2 | Asset-backed Securities | Fair Value, Measurements, Recurring [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Fair value | 4,733 |  |
Fair Value, Inputs, Level 2 | U.S. Government agency securities | Fair Value, Measurements, Recurring [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Fair value | 67,231 | $ 37,916 |
Fair Value, Inputs, Level 2 | Securities issued by states and political subdivisions in the U.S | Fair Value, Measurements, Recurring [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Fair value | $ 11,517 |  |

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- Definition Amount of investment in debt security measured at amortized cost (held-to-maturity) and investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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