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LOANS HELD FOR INVESTMENT, NET - Impaired Loans (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2020 | Dec. 31, 2020
Unpaid Principal Balance |  |  |
With no related allowance recorded |  |  | $ 4,567
With related allowance recorded |  |  | 12,502
Total |  |  | 17,069
Recorded Investment |  |  |
With no related allowance recorded |  |  | 4,567
With related allowance recorded |  |  | 12,502
Total |  |  | 17,069
Related Allowance |  |  |
Impaired Financing Receivable, Related Allowance |  |  | 6,474
Average Recorded Investment |  |  |
With no related allowance recorded | $ 2,820 | $ 3,114 |
Total | 13,052 | 10,614 |
Interest Income Recognized |  |  |
With no related allowance recorded |  | 65 |
Total |  | 218 |
One-to-four family residential and cooperative/condominium apartment |  |  |
Unpaid Principal Balance |  |  |
With no related allowance recorded |  |  | 1,863
Recorded Investment |  |  |
With no related allowance recorded |  |  | 1,863
Related Allowance |  |  |
Impaired Financing Receivable, Related Allowance |  |  | 0
Average Recorded Investment |  |  |
With no related allowance recorded |  | 10 |
Interest Income Recognized |  |  |
With no related allowance recorded |  | 4 |
Multifamily residential and residential mixed-use |  |  |
Average Recorded Investment |  |  |
With no related allowance recorded | 1,295 | 416 |
Interest Income Recognized |  |  |
With no related allowance recorded |  | 7 |
Commercial real estate ("CRE") |  |  |
Unpaid Principal Balance |  |  |
With no related allowance recorded |  |  | 2,704
Recorded Investment |  |  |
With no related allowance recorded |  |  | 2,704
Related Allowance |  |  |
Impaired Financing Receivable, Related Allowance |  |  | 0
Average Recorded Investment |  |  |
With no related allowance recorded | 1,525 | 2,688 |
Interest Income Recognized |  |  |
With no related allowance recorded |  | 54 |
Commercial and Industrial ("C&I") Loans |  |  |
Unpaid Principal Balance |  |  |
With related allowance recorded |  |  | 12,502
Recorded Investment |  |  |
With related allowance recorded |  |  | 12,502
Related Allowance |  |  |
Impaired Financing Receivable, Related Allowance |  |  | $ 6,474
Average Recorded Investment |  |  |
With related allowance recorded | $ 10,232 | 7,500 |
Interest Income Recognized |  |  |
With related allowance recorded |  | $ 153 |

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