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Pension and Post-retirement Benefit Obligations - Additional Information (Details)	Dec. 31, 2024 USD ($)
Postemployment Benefits [Abstract]
Required minimum contributions for the pension plans	$ 0

X

- Definition

Defined Benefit Plan, Required Minimum Contributions

+ References

No definition available.

+ Details

Name:	bwmn_DefinedBenefitPlanRequiredMinimumContributions
Namespace Prefix:	bwmn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

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