XML 87 R74.htm IDEA: XBRL DOCUMENT
v3.21.1

Commitments and Contingencies - Additional Information (Details) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2021 USD ($) LeaseAgreement | Mar. 31, 2020 USD ($)
Commitments And Contingencies Disclosure [Abstract] |  |
Number of lease agreements | LeaseAgreement | 3 |
Rent expense | $ | $ 1.4 | $ 2.1

X
- Definition Number of lease agreements. + References No definition available. + Details
Name: | bwmn_NumberOfLeaseAgreements
Namespace Prefix: | bwmn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Amount of operating lease expense. Excludes sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918638-209977 + Details
Name: | us-gaap_OperatingLeaseExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration