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v3.23.2

LEASES - General Information (Details) | Sep. 30, 2022 location
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Lessee, Lease, Description [Line Items] |
Number of offices and branches | 34
Noncancelable Operating Leases [Member] |
Lessee, Lease, Description [Line Items] |
Number of offices and branches | 19

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_LesseeLeaseDescriptionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of stores. + References No definition available. + Details
Name: | us-gaap_NumberOfStores
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | srt_CounterpartyNameAxis=bcml_NoncancelableOperatingLeasesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |