XML 124 R110.htm IDEA: XBRL DOCUMENT
v3.21.1

DEPOSITS - Interest Expense (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Interest Expense Domestic Deposit Liabilities [Abstract] |  |  |
Interest Expense Domestic Deposit Liabilities, Notice of Withdrawal, Net of Withdrawal Penalties | $ 417 | $ 252 | $ 167
Interest Expense Domestic Deposit Liabilities, Money Market, Net of Withdrawal Penalties | 2,721 | 2,912 | 1,895
Interest Expense Domestic Deposit Liabilities, Time Deposit, Net of Withdrawal Penalties | 3,816 | 5,001 | 2,400
Interest Expense Domestic Deposit Liabilities, Total | $ 6,954 | $ 8,165 | $ 4,462

X
- Definition Interest Expense Domestic Deposit Liabilities, Money Market, Net of Withdrawal Penalties + References No definition available. + Details
Name: | bcml_InterestExpenseDomesticDepositLiabilitiesMoneyMarketNetOfWithdrawalPenalties
Namespace Prefix: | bcml_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Interest Expense Domestic Deposit Liabilities, Notice of Withdrawal, Net of Withdrawal Penalties + References No definition available. + Details
Name: | bcml_InterestExpenseDomesticDepositLiabilitiesNoticeOfWithdrawalNetOfWithdrawalPenalties
Namespace Prefix: | bcml_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Interest Expense Domestic Deposit Liabilities, Time Deposit, Net of Withdrawal Penalties + References No definition available. + Details
Name: | bcml_InterestExpenseDomesticDepositLiabilitiesTimeDepositNetOfWithdrawalPenalties
Namespace Prefix: | bcml_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Aggregate amount of all interest expense on domestic deposit liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.6) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 + Details
Name: | us-gaap_InterestExpenseDomesticDepositLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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