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Employer Share Plans - Additional Information (Detail) In Millions, unless otherwise specified | 3 Months Ended
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Mar. 31, 2015
Stock Based Compensation [Line Items] |
Stock awards expiry | 2024
Restricted Stock Awards [Member] |
Stock Based Compensation [Line Items] |
Maximum stock based compensation awards granted under the plan | 9.6 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember

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- Definition Share based compensation arrangement by share based payment award expiration year. + References No definition available. + Details
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Namespace Prefix: | cbz_
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- Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Details
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Period Type: |