v3.26.1
Securities - Schedule of Securities Held to Maturity (Parenthetical) (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Investments, Debt and Equity Securities [Abstract]
Allowance for credit loss reserve
$ 1,000
$ 2,000
X
- Definition
Allowance for credit losses reserve.
+ References
No definition available.
+ Details
Name:
bvfl_AllowanceForCreditLossesReserve
Namespace Prefix:
bvfl_
Data Type:
xbrli:monetaryItemType
Balance Type:
credit
Period Type:
instant
X
- References
No definition available.
+ Details
Name:
us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract
Namespace Prefix:
us-gaap_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration