XML 76 R49.htm IDEA: XBRL DOCUMENT v2.4.1.9

Fair Value Measurements - Financial Instruments (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
2006 Convertible Senior Subordinated Notes [Member]
Fair Value Assets Measured On Recurring Basis Unobservable Input [Line Items]
Carrying Value	$ 750us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent / us-gaap_LongtermDebtTypeAxis = cbz_TwoThousandAndSixConvertibleSeniorSubordinatedNotesMember	$ 750us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent / us-gaap_LongtermDebtTypeAxis = cbz_TwoThousandAndSixConvertibleSeniorSubordinatedNotesMember
Fair Value	750us-gaap_LongTermDebtFairValue / us-gaap_LongtermDebtTypeAxis = cbz_TwoThousandAndSixConvertibleSeniorSubordinatedNotesMember	750us-gaap_LongTermDebtFairValue / us-gaap_LongtermDebtTypeAxis = cbz_TwoThousandAndSixConvertibleSeniorSubordinatedNotesMember
2010 Convertible Senior Subordinated Notes [Member]
Fair Value Assets Measured On Recurring Basis Unobservable Input [Line Items]
Carrying Value	96,415us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent / us-gaap_LongtermDebtTypeAxis = cbz_TwoThousandAndTenConvertibleSeniorSubordinatedNotesMember	95,819us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent / us-gaap_LongtermDebtTypeAxis = cbz_TwoThousandAndTenConvertibleSeniorSubordinatedNotesMember
Fair Value	$ 124,477us-gaap_LongTermDebtFairValue / us-gaap_LongtermDebtTypeAxis = cbz_TwoThousandAndTenConvertibleSeniorSubordinatedNotesMember	$ 118,157us-gaap_LongTermDebtFairValue / us-gaap_LongtermDebtTypeAxis = cbz_TwoThousandAndTenConvertibleSeniorSubordinatedNotesMember

X

- Details

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Namespace Prefix:	cbz_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Definition

The carrying amount of the equity component of convertible debt which may be settled in cash upon conversion.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031897-161870

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

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