XML 78 R77.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Parenthetical) (Detail) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract] |  |
Unrealized gains (losses) on available for sale securities, income tax expense (benefit) | $ 220 | $ (183)
Unrealized gain (loss) on interest rate swaps, income tax expense (benefit) | $ (320) | $ 213

X
- Definition Accumulated Other Comprehensive Income Unrealized Holding Gain Loss On Derivatives Arising During Period Tax + References No definition available. + Details
Name: | cbz_AccumulatedOtherComprehensiveIncomeUnrealizedHoldingGainLossOnDerivativesArisingDuringPeriodTax
Namespace Prefix: | cbz_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Accumulated Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax + References No definition available. + Details
Name: | cbz_AccumulatedOtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax
Namespace Prefix: | cbz_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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