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Loans and allowance for loan losses (Tables) | 9 Months Ended
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Sep. 30, 2021
Loans and allowance for loan losses |
Summary of loans by major category | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | September 30, 2021 |  | December 31, 2020
​ | ​ | (Dollars in thousands)
First mortgage loans |  | ​ |  |  | ​ |
1-4 family residential | ​ | $ | 87,184 | ​ | $ | 87,197
Multi-family | ​ |  | 4,221 | ​ |  | 5,737
Commercial | ​ |  | 4,453 | ​ |  | 5,340
Total first mortgage loans | ​ |  | 95,858 | ​ |  | 98,274
Consumer loans | ​ |  | 324 | ​ |  | 385
Total loans | ​ |  | 96,182 | ​ |  | 98,659
Net deferred loan costs | ​ |  | 752 | ​ |  | 666
Allowance for loan losses | ​ |  | (783) | ​ |  | (870)
Total loans, net | ​ | $ | 96,151 | ​ | $ | 98,455
Schedule of changes in the allowance for loan losses and the related loan balance information | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2021
​ | ​ | 1-4 family | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | residential | ​ | Multi-family | ​ | Commercial | ​ | Consumer | ​ | Unallocated | ​ | Total
​ | ​ | (Dollars in thousands)
Three months ended: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Beginning balance | ​ | $ | 695 | ​ | $ | 52 | ​ | $ | 25 | ​ | $ | 10 | ​ | $ | — | ​ | $ | 792
Charge-offs | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | —
Recoveries | ​ |  | 3 | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 3
Net recoveries (charge-offs) | ​ |  | 3 | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 3
(Release of) provision for loan losses | ​ |  | 1 | ​ |  | (13) | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | (12)
Ending balance | ​ | $ | 679 | ​ | $ | 39 | ​ | $ | 25 | ​ | $ | 10 | ​ | $ | 30 | ​ | $ | 783
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2020
​ | ​ | 1-4 family | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | residential | ​ | Multi-family | ​ | Commercial | ​ | Consumer | ​ | Unallocated | ​ | Total
​ | ​ | (Dollars in thousands)
Three months ended: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Beginning balance | ​ | $ | 538 | ​ | $ | 24 | ​ | $ | 13 | ​ | $ | 1 | ​ | $ | 40 | ​ | $ | 616
Charge-offs | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | —
Recoveries | ​ |  | 3 | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 3
Net recoveries | ​ |  | 3 | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 3
(Release of) provision for loan losses | ​ |  | 18 | ​ |  | — | ​ |  | (1) | ​ |  | — | ​ |  | 73 | ​ |  | 90
Ending balance | ​ | $ | 559 | ​ | $ | 24 | ​ | $ | 12 | ​ | $ | 1 | ​ | $ | 113 | ​ | $ | 709
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2021
​ | ​ | 1-4 family | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | residential | ​ | Multi-family | ​ | Commercial | ​ | Consumer | ​ | Unallocated | ​ | Total
​ | ​ | (Dollars in thousands)
Nine months ended: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Beginning balance | ​ | $ | 798 | ​ | $ | 29 | ​ | $ | 38 | ​ | $ | 5 | ​ | $ | — | ​ | $ | 870
Charge-offs | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | (99) | ​ |  | — | ​ |  | (99)
Recoveries | ​ |  | 7 | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 7
Net recoveries (charge-offs) | ​ |  | 7 | ​ |  | — | ​ |  | — | ​ |  | (99) | ​ |  | — | ​ |  | (92)
Provision for loan losses | ​ |  | (126) | ​ |  | 10 | ​ |  | (13) | ​ |  | 104 | ​ |  | 30 | ​ |  | 5
Ending balance | ​ | $ | 679 | ​ | $ | 39 | ​ | $ | 25 | ​ | $ | 10 | ​ | $ | 30 | ​ | $ | 783
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2020
​ | ​ | 1-4 family | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | residential | ​ | Multi-family | ​ | Commercial | ​ | Consumer | ​ | Unallocated | ​ | Total
​ | ​ | (Dollars in thousands)
Nine months ended: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Beginning balance | ​ | $ | 361 | ​ | $ | 10 | ​ | $ | 9 | ​ | $ | 8 | ​ | $ | — | ​ | $ | 388
Charge-offs | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | —
Recoveries | ​ |  | 11 | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 11
Net recoveries | ​ |  | 11 | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 11
Provision for loan losses | ​ |  | 187 | ​ |  | 14 | ​ |  | 3 | ​ |  | (7) | ​ |  | 113 | ​ |  | 310
Ending balance | ​ | $ | 559 | ​ | $ | 24 | ​ | $ | 12 | ​ | $ | 1 | ​ | $ | 113 | ​ | $ | 709
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Collectively evaluated | ​ | Individually evaluated | ​ | Total
​ | ​ | ​ | ​ | ​ | Recorded | ​ | ​ | ​ | ​ | Recorded | ​ | ​ | ​ | ​ | Recorded
​ | ​ | Allowance for | ​ | investment in | ​ | Allowance for | ​ | investment in | ​ | Allowance for | ​ | investment in
​ | ​ | loan losses | ​ | loans | ​ | loan losses | ​ | loans | ​ | loan losses | ​ | loans
​ | ​ | (Dollars in thousands)
September 30, 2021 |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
1-4 family residential | ​ | $ | 555 | ​ | $ | 85,205 | ​ | $ | 124 | ​ | $ | 1,979 | ​ | $ | 679 | ​ | $ | 87,184
Multi-family | ​ |  | 39 | ​ | ​ | 4,221 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 39 | ​ |  | 4,221
Commercial | ​ |  | 25 | ​ | ​ | 4,453 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 25 | ​ |  | 4,453
Consumer | ​ |  | 10 | ​ | ​ | 324 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 10 | ​ |  | 324
Unallocated | ​ |  | 30 | ​ | ​ | — | ​ | ​ | 30 | ​ | ​ |  | ​ | ​ |  | ​ |  |
Total | ​ | $ | 659 | ​ | $ | 94,203 | ​ | $ | 124 | ​ | $ | 1,979 | ​ | $ | 783 | ​ | $ | 96,182
December 31, 2020 | ​ |  |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ |  |
1-4 family residential | ​ | $ | 648 | ​ | $ | 84,774 | ​ | $ | 150 | ​ | $ | 2,423 | ​ | $ | 798 | ​ | $ | 87,197
Multi-family | ​ |  | 29 | ​ | ​ | 5,737 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 29 | ​ |  | 5,737
Commercial | ​ |  | 38 | ​ | ​ | 5,340 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 38 | ​ |  | 5,340
Consumer | ​ |  | 5 | ​ | ​ | 286 | ​ | ​ | — | ​ | ​ | 99 | ​ | ​ | 5 | ​ |  | 385
Total | ​ | $ | 720 | ​ | $ | 96,137 | ​ | $ | 150 | ​ | $ | 2,522 | ​ | $ | 870 | ​ | $ | 98,659
Schedule of loan balances based on risk rating | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Pass |  | Special Mention |  | Substandard |  | Doubtful |  | Total loans
​ | ​ | (Dollars in thousands)
September 30, 2021 |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
1-4 family residential | ​ | $ | 86,670 |  | $ | 409 |  | $ | 105 |  | $ | — | ​ | $ | 87,184
Multi-family | ​ |  | 4,221 |  |  | — |  |  | — |  |  | — | ​ |  | 4,221
Commercial | ​ |  | 4,453 |  |  | — |  |  | — |  |  | — | ​ |  | 4,453
Consumer | ​ |  | 324 |  |  | — |  |  | — |  |  | — | ​ |  | 324
Total | ​ | $ | 95,668 |  | $ | 409 |  | $ | 105 |  | $ | — | ​ | $ | 96,182
December 31, 2020 | ​ |  |  |  |  |  |  |  |  |  |  |  | ​ |  |
1-4 family residential | ​ | $ | 86,500 |  | $ | 417 |  | $ | 280 |  | $ | — | ​ | $ | 87,197
Multi-family | ​ |  | 5,737 |  |  | — |  |  | — |  |  | — | ​ |  | 5,737
Commercial | ​ |  | 5,340 |  |  | — |  |  | — |  |  | — | ​ |  | 5,340
Consumer | ​ |  | 286 |  |  | 99 |  |  | — |  |  | — | ​ |  | 385
Total | ​ | $ | 97,863 |  | $ | 516 |  | $ | 280 |  | $ | — | ​ | $ | 98,659
Schedule of aging of loan portfolio | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ |  | Greater than |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​
​ | ​ | ​ | ​ | 90 Days Past | ​ | ​ | ​ | ​ | Total Past Due | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 31-89 Days Past Due | ​ | Due and | ​ | ​ | ​ | ​ | and Non- | ​ | ​ | ​ | ​ | Total Loan
​ | ​ | and Accruing | ​ | Accruing | ​ | Non-Accrual | ​ | Accrual | ​ | Current | ​ | Balance
​ | ​ | (Dollars in thousands)
September 30, 2021 |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
1-4 family residential | ​ | $ | — |  | $ | 43 |  | $ | 105 |  | $ | 148 |  | $ | 87,036 | ​ | $ | 87,184
Multi-family | ​ |  | — |  | ​ | — |  | ​ | — |  | ​ | — |  | ​ | 4,221 | ​ |  | 4,221
Commercial | ​ |  | — |  | ​ | — |  | ​ | — |  | ​ | — |  | ​ | 4,453 | ​ |  | 4,453
Consumer | ​ |  | — |  | ​ | — |  | ​ | — |  | ​ | — |  | ​ | 324 | ​ |  | 324
Total | ​ | $ | — |  | $ | 43 |  | $ | 105 |  | $ | 148 |  | $ | 96,034 | ​ | $ | 96,182
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
December 31, 2020 | ​ |  |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  | ​ |  |
1-4 family residential | ​ | $ | — |  | $ | 75 |  | $ | 280 |  | $ | 355 |  | $ | 86,842 | ​ | $ | 87,197
Multi-family | ​ |  | — |  | ​ | — |  | ​ | — |  | ​ | — |  | ​ | 5,737 | ​ |  | 5,737
Commercial | ​ |  | — |  | ​ | — |  | ​ | — |  | ​ | — |  | ​ | 5,340 | ​ |  | 5,340
Consumer | ​ |  | 99 |  | ​ | — |  | ​ | — |  | ​ | 99 |  | ​ | 286 | ​ |  | 385
Total | ​ | $ | 99 |  | $ | 75 |  | $ | 280 |  | $ | 454 |  | $ | 98,205 | ​ | $ | 98,659
Schedule of loans individually evaluated for impairment | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Recorded investment |  | Unpaid principal balance |  | Related allowance
​ | ​ | (Dollars in thousands)
September 30, 2021 |  | ​ |  |  | ​ |  |  | ​ |
With no related allowance recorded |  | ​ |  |  | ​ |  |  | ​ |
1-4 family residential | ​ | $ | 1,135 |  | $ | 1,457 | ​ | $ | —
Multi-family | ​ |  | — |  | ​ | — | ​ |  | —
Commercial | ​ |  | — |  | ​ | — | ​ |  | —
Consumer | ​ |  | — |  | ​ | — | ​ |  | —
Total | ​ | $ | 1,135 |  | $ | 1,457 | ​ | $ | —
With a related allowance recorded | ​ |  |  |  | ​ |  | ​ |  |
1-4 family residential | ​ | $ | 844 |  | $ | 854 | ​ | $ | 124
Multi-family | ​ |  | — |  | ​ | — | ​ |  | —
Commercial | ​ |  | — |  | ​ | — | ​ |  | —
Consumer | ​ |  | — |  | ​ | — | ​ |  | —
Total | ​ | $ | 844 |  | $ | 854 | ​ | $ | 124
Balance at September 30, 2021 | ​ | $ | 1,979 |  | $ | 2,311 | ​ | $ | 124
December 31, 2020 | ​ |  |  |  | ​ |  | ​ |  |
With no related allowance recorded | ​ |  |  |  | ​ |  | ​ |  |
1-4 family residential | ​ | $ | 1,348 |  | $ | 1,676 | ​ | $ | —
Multi-family | ​ |  | — |  | ​ | — | ​ |  | —
Commercial | ​ |  | — |  | ​ | — | ​ |  | —
Consumer | ​ |  | 99 |  | ​ | 99 | ​ |  | —
Total | ​ | $ | 1,447 |  | $ | 1,775 | ​ | $ | —
With a related allowance recorded | ​ |  |  |  | ​ |  | ​ |  |
1-4 family residential | ​ | $ | 1,075 |  | $ | 1,120 | ​ | $ | 150
Multi-family | ​ |  | — |  | ​ | — | ​ |  | —
Commercial | ​ |  | — |  | ​ | — | ​ |  | —
Consumer | ​ |  | — |  | ​ | — | ​ |  | —
Total | ​ | $ | 1,075 |  | $ | 1,120 | ​ | $ | 150
Balance at December 31, 2020 | ​ | $ | 2,522 |  | $ | 2,895 | ​ | $ | 150
​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Average recorded |  | ​ | ​
​ | ​ | investment | ​ | Interest income recognized
​ | ​ | (Dollars in thousands)
September 30, 2021 |  | ​ |  |  | ​ |
With no related allowance recorded |  | ​ |  |  | ​ |
1-4 family residential | ​ | $ | 1,141 | ​ | $ | 15
Multi-family | ​ |  | — | ​ |  | —
Commercial | ​ |  | — | ​ |  | —
Consumer | ​ |  | — | ​ |  | —
Total | ​ | $ | 1,141 | ​ | $ | 15
With a related allowance recorded | ​ |  |  | ​ |  |
1-4 family residential | ​ | $ | 850 | ​ | $ | 10
Multi-family | ​ |  | — | ​ |  | —
Commercial | ​ |  | — | ​ |  | —
Consumer | ​ |  | — | ​ |  | —
Total | ​ | $ | 850 | ​ | $ | 10
Balance for the three months ended September 30, 2021 | ​ | $ | 1,991 | ​ | $ | 25
September 30, 2020 | ​ |  |  | ​ |  |
With no related allowance recorded | ​ |  |  | ​ |  |
1-4 family residential | ​ | $ | 974 | ​ | $ | 13
Multi-family | ​ |  | — | ​ |  | —
Commercial | ​ |  | — | ​ |  | —
Consumer | ​ |  | — | ​ |  | —
Total | ​ | $ | 974 | ​ | $ | 13
With a related allowance recorded | ​ |  |  | ​ |  |
1-4 family residential | ​ | $ | 1,092 | ​ | $ | 13
Multi-family | ​ |  | — | ​ |  | —
Commercial | ​ |  | — | ​ |  | —
Consumer | ​ |  | — | ​ |  | —
Total | ​ | $ | 1,092 | ​ | $ | 13
Balance for the three months ended September 30, 2020 | ​ | $ | 2,066 | ​ | $ | 26
​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Average recorded |  | ​ | ​
​ | ​ | investment | ​ | Interest income recognized
​ | ​ | (Dollars in thousands)
September 30, 2021 |  | ​ |  |  | ​ |
With no related allowance recorded |  | ​ |  |  | ​ |
1-4 family residential | ​ | $ | 1,155 | ​ | $ | 52
Multi-family | ​ |  | — | ​ |  | —
Commercial | ​ |  | — | ​ |  | —
Consumer | ​ |  | — | ​ |  | —
Total | ​ | $ | 1,155 | ​ | $ | 52
With a related allowance recorded | ​ |  |  | ​ |  |
1-4 family residential | ​ | $ | 860 | ​ | $ | 29
Multi-family | ​ |  | — | ​ |  | —
Commercial | ​ |  | — | ​ |  | —
Consumer | ​ |  | — | ​ |  | —
Total | ​ | $ | 860 | ​ | $ | 29
Balance for the nine months ended September 30, 2021 | ​ | $ | 2,015 | ​ | $ | 81
September 30, 2020 | ​ |  |  | ​ |  |
With no related allowance recorded | ​ |  |  | ​ |  |
1-4 family residential | ​ | $ | 988 | ​ | $ | 39
Multi-family | ​ |  | — | ​ |  | —
Commercial | ​ |  | — | ​ |  | —
Consumer | ​ |  | — | ​ |  | —
Total | ​ | $ | 988 | ​ | $ | 39
With a related allowance recorded | ​ |  |  | ​ |  |
1-4 family residential | ​ | $ | 1,100 | ​ | $ | 37
Multi-family | ​ |  | — | ​ |  | —
Commercial | ​ |  | — | ​ |  | —
Consumer | ​ |  | — | ​ |  | —
Total | ​ | $ | 1,100 | ​ | $ | 37
Balance for the nine months ended September 30, 2020 | ​ | $ | 2,088 | ​ | $ | 76

X
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- Definition Tabular disclosure of financing receivables by credit quality indicator. The credit quality indicator is a statistic about the credit quality of financing receivables. Examples include, but not limited to, consumer credit risk scores, credit-rating-agency ratings, an entity's internal credit risk grades, loan-to-value ratios, collateral, collection experience and other internal metrics. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919230-210447 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 29 -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953659-111524 + Details
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- Definition Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3,4) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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