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LOANS RECEIVABLE - Loans receivable, excluding loans held for sale (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019
--- | --- | --- | --- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Total loans |  | $ 975,174 |  | $ 911,509 |  |  |
Less: Allowance for loan losses |  | 18,866 | $ 17,076 | 12,624 | $ 11,436 | $ 11,442 | $ 11,457
Loans receivable, net |  | 956,308 |  | 898,885 |  |  |
Commercial Real Estate Portfolio Segment |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Total loans |  | 900,364 |  | 824,143 |  |  |
Commercial Real Estate Portfolio Segment | Commercial Business |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Total loans | [1] | 281,670 |  | 179,029 |  |  |
Less: Allowance for loan losses |  | 2,180 | 2,011 | 2,008 | 2,051 | 2,113 | 1,808
Commercial Real Estate Portfolio Segment | Commercial Real Estate |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Total loans |  | 525,977 |  | 507,871 |  |  |
Less: Allowance for loan losses |  | 13,209 | 11,323 | 6,421 | 5,038 | 4,889 | 5,053
Commercial Real Estate Portfolio Segment | Land |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Total loans |  | 14,531 |  | 14,026 |  |  |
Less: Allowance for loan losses |  | 245 | 243 | 230 | 219 | 244 | 254
Commercial Real Estate Portfolio Segment | Multi-Family |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Total loans |  | 49,878 |  | 58,374 |  |  |
Less: Allowance for loan losses |  | 745 | 879 | 854 | 779 | 699 | 728
Commercial Real Estate Portfolio Segment | Real Estate Construction |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Total loans |  | 28,308 |  | 64,843 |  |  |
Less: Allowance for loan losses |  | 720 | 692 | 1,149 | 1,381 | 1,506 | 1,457
Consumer |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Total loans |  | 74,810 |  | 87,366 |  |  |
Less: Allowance for loan losses |  | 1,155 | $ 1,281 | 1,363 | $ 1,347 | $ 1,346 | $ 1,447
Consumer | Real estate one-to-four family |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Total loans |  | 71,940 |  | 83,150 |  |  |
Consumer | Other installment |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |
Total loans |  | $ 2,870 |  | $ 4,216 |  |  |
[1] | SBA PPP loans totaled $110.8 million and none at September 30, 2020 and March 31, 2020, respectively.

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