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Earnings Per Share - Additional Information (Detail) (USD $) | Dec. 31, 2013
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2006 Notes [Member] |
Earnings Per Share [Line Items] |
Conversion price of debt issued | $ 10.63
2010 Notes [Member] |
Earnings Per Share [Line Items] |
Conversion price of debt issued | $ 7.41

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Namespace Prefix: | cbz_
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- Definition The price per share of the conversion feature embedded in the debt instrument. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031898-161870 + Details
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