XML 65 R55.htm IDEA: XBRL DOCUMENT v3.24.2.u1

Stockholders' Equity - Schedule of Cashless Exercise Information (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Equity [Abstract]
Number of shares withheld (in shares)	3,504	3,132
Total amount withheld	$ 58	$ 86
Weighted-average price (usd per share)	$ 16.59	$ 27.57

X

- Definition

Adjustments Related To Tax Withholding And Exercise Of Options For Share-Based Compensation

+ References

No definition available.

+ Details

Name:	bmrc_AdjustmentsRelatedToTaxWithholdingAndExerciseOfOptionsForShareBasedCompensation
Namespace Prefix:	bmrc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Share-based Compensation Arrangements by Share-based Payment Award, Options, Tax Withholding And Exercises in Period, Weighted Average Exercise Price

+ References

No definition available.

+ Details

Name:	bmrc_SharebasedCompensationArrangementsbySharebasedPaymentAwardOptionsTaxWithholdingAndExercisesinPeriodWeightedAverageExercisePrice
Namespace Prefix:	bmrc_
Data Type:	dtr-types1:perShareItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_EquityAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of shares used to settle grantee's tax withholding obligation for award under share-based payment arrangement.

+ References

No definition available.

+ Details

Name:	us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration