XML 51 R42.htm IDEA: XBRL DOCUMENT v3.22.1

Note 5 - Foreclosed Assets - Activity in the Valuation Allowance (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Beginning balance	$ 227,000	$ 0
Reductions from sales	(8,000)	0
Ending balance	$ 219,000	$ 0

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

Amount of the valuation allowance for foreclosed assets that was applied in the period against the carrying amount of foreclosed assets that was sold, written down or written off.

+ References

No definition available.

+ Details

Name:	bfin_ForeclosedAssetsValuationAllowanceAmountsApplied
Namespace Prefix:	bfin_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration