XML 39 R28.htm IDEA: XBRL DOCUMENT
v3.21.2

Summary of Significant Accounting Policies (Details) | 6 Months Ended
--- | ---
Jun. 30, 2021 practiceGroup
Accounting Policies [Abstract] |
Number of practice groups | 3

X
- Definition Number of practice groups. + References No definition available. + Details
Name: | cbz_NumberOfPracticeGroups
Namespace Prefix: | cbz_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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