XML 54 R45.htm IDEA: XBRL DOCUMENT
v3.22.2

Note 7 - Fair Value (Details Textual) - USD ($) | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Mar. 31, 2022 | Dec. 31, 2021 | Mar. 31, 2021 | Dec. 31, 2020
Impaired Loans, Fair Value Disclosure |  |  |  |  |  | $ 297,000 |  |
Impaired Loans, Valuation Allowance |  |  |  |  |  | 30,000 |  |
Foreclosed Assets, Gross | $ 723,000 |  | $ 723,000 |  |  | 952,000 |  |
Foreclosed Assets, Valuation Allowance | 200,000 | $ 281,000 | 200,000 | $ 281,000 | $ 219,000 | 227,000 | $ 0 | $ 0
Foreclosed Assets, Net of Valuation Reserve | 523,000 |  | 523,000 |  |  | $ 725,000 |  |
Foreclosed Assets Valuation Adjustments, With Valuation Reserve | 0 | 281,000 | 0 | 281,000 |  |  |  |
Impaired Loans [Member] |  |  |  |  |  |  |  |
Impaired Loans, Valuation Allowance | $ 30,000 | $ 28,000 | $ 30,000 | $ 28,000 |  |  |  |

X
- Definition Represents gross amount of foreclosed assets before valuation allowance. + References No definition available. + Details
Name: | bfin_ForeclosedAssetsGross
Namespace Prefix: | bfin_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of foreclosed assets, net of valuation reserve. + References No definition available. + Details
Name: | bfin_ForeclosedAssetsNetOfValuationReserve
Namespace Prefix: | bfin_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents valuation adjustments of foreclosed assets with a valuation reserve. + References No definition available. + Details
Name: | bfin_ForeclosedAssetsValuationAdjustmentsWithValuationReserve
Namespace Prefix: | bfin_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents valuation allowance of foreclosed assets. + References No definition available. + Details
Name: | bfin_ForeclosedAssetsValuationAllowance
Namespace Prefix: | bfin_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The fair value portion of impaired loans. + References No definition available. + Details
Name: | bfin_ImpairedLoansFairValueDisclosure
Namespace Prefix: | bfin_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents valuation allowance of impaired loans. + References No definition available. + Details
Name: | bfin_ImpairedLoansValuationAllowance
Namespace Prefix: | bfin_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=bfin_ImpairedLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |