XML 41 R24.htm IDEA: XBRL DOCUMENT
v3.21.2

Securities (Tables) | 12 Months Ended
--- | ---
Jun. 30, 2021
Investments, Debt and Equity Securities [Abstract] |
Schedule of gross unrealized or unrecognized gains and losses |
|  | 2021 |
(in thousands) |  | Amortized cost |  |  | Gross unrealized/ unrecognized gains |  |  | Gross unrealized/ unrecognized losses |  |  | Estimated fair value |
Available-for-sale Securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agency mortgage-backed residential |  | $ | 33 |  |  | $ | - |  |  | $ | - |  |  | $ | 33 |
Held-to-maturity Securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agency mortgage-backed: residential |  | $ | 462 |  |  | $ | 16 |  |  | $ | 2 |  |  | $ | 476 |
|  | 2020 |
(in thousands) |  | Amortized cost |  |  | Gross unrealized/ unrecognized gains |  |  | Gross unrealized/ unrecognized losses |  |  | Estimated fair value |
Available-for-sale Securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agency bonds |  | $ | 500 |  |  | $ | 3 |  |  | $ | - |  |  | $ | 503 |
Agency mortgage-backed: residential |  |  | 38 |  |  |  | - |  |  |  | - |  |  |  | 38 |
|  | $ | 538 |  |  | $ | 3 |  |  | $ | - |  |  | $ | 541 |
Held-to-maturity Securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agency mortgage-backed: residential |  | $ | 598 |  |  | $ | 16 |  |  | $ | 3 |  |  | $ | 611 |

X
- Definition The entire tabular disclosure of investment holdings. + References No definition available. + Details
Name: | kffb_InvestmentsSecuritiesTableTextBlock
Namespace Prefix: | kffb_
Data Type: | dtr:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration