XML 17 R42.htm IDEA: XBRL DOCUMENT v2.4.1.9

Segment Reporting (Segment Reporting Information) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015 segment	Mar. 31, 2014
Revenues:
Revenues	$ 430,045us-gaap_SalesRevenueServicesNet	$ 406,851us-gaap_SalesRevenueServicesNet
Gross Profit:
Total Gross Profit	135,875us-gaap_GrossProfit	128,155us-gaap_GrossProfit
Operating Income (Loss):
Total Operating Income	25,071us-gaap_OperatingIncomeLoss	26,508us-gaap_OperatingIncomeLoss
Amortization of Intangible Assets	4,869us-gaap_AmortizationOfIntangibleAssets	5,538us-gaap_AmortizationOfIntangibleAssets
Reportable segments (in number of segments)	3us-gaap_NumberOfReportableSegments
Corporate Segment [Member]
Operating Income (Loss):
Total Operating Income	(13,585)us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember	(11,882)us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember
Amortization of Intangible Assets	0us-gaap_AmortizationOfIntangibleAssets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember	8us-gaap_AmortizationOfIntangibleAssets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember
Apex
Revenues:
Revenues	294,293us-gaap_SalesRevenueServicesNet / us-gaap_StatementBusinessSegmentsAxis = asgn_ApexSegmentMember	278,408us-gaap_SalesRevenueServicesNet / us-gaap_StatementBusinessSegmentsAxis = asgn_ApexSegmentMember
Gross Profit:
Total Gross Profit	79,643us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = asgn_ApexSegmentMember	75,506us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = asgn_ApexSegmentMember
Operating Income (Loss):
Total Operating Income	22,911us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = asgn_ApexSegmentMember	22,784us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = asgn_ApexSegmentMember
Amortization of Intangible Assets	3,522us-gaap_AmortizationOfIntangibleAssets / us-gaap_StatementBusinessSegmentsAxis = asgn_ApexSegmentMember	4,089us-gaap_AmortizationOfIntangibleAssets / us-gaap_StatementBusinessSegmentsAxis = asgn_ApexSegmentMember
Oxford
Revenues:
Revenues	127,471us-gaap_SalesRevenueServicesNet / us-gaap_StatementBusinessSegmentsAxis = asgn_OxfordSegmentMember	117,500us-gaap_SalesRevenueServicesNet / us-gaap_StatementBusinessSegmentsAxis = asgn_OxfordSegmentMember
Gross Profit:
Total Gross Profit	53,524us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = asgn_OxfordSegmentMember	49,026us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = asgn_OxfordSegmentMember
Operating Income (Loss):
Total Operating Income	15,353us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = asgn_OxfordSegmentMember	14,284us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = asgn_OxfordSegmentMember
Amortization of Intangible Assets	1,300us-gaap_AmortizationOfIntangibleAssets / us-gaap_StatementBusinessSegmentsAxis = asgn_OxfordSegmentMember	1,370us-gaap_AmortizationOfIntangibleAssets / us-gaap_StatementBusinessSegmentsAxis = asgn_OxfordSegmentMember
Life Sciences Europe
Revenues:
Revenues	8,281us-gaap_SalesRevenueServicesNet / us-gaap_StatementBusinessSegmentsAxis = asgn_LifeSciencesEuropeMember	10,943us-gaap_SalesRevenueServicesNet / us-gaap_StatementBusinessSegmentsAxis = asgn_LifeSciencesEuropeMember
Gross Profit:
Total Gross Profit	2,708us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = asgn_LifeSciencesEuropeMember	3,623us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = asgn_LifeSciencesEuropeMember
Operating Income (Loss):
Total Operating Income	392us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = asgn_LifeSciencesEuropeMember	1,322us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = asgn_LifeSciencesEuropeMember
Amortization of Intangible Assets	47us-gaap_AmortizationOfIntangibleAssets / us-gaap_StatementBusinessSegmentsAxis = asgn_LifeSciencesEuropeMember	71us-gaap_AmortizationOfIntangibleAssets / us-gaap_StatementBusinessSegmentsAxis = asgn_LifeSciencesEuropeMember
Physician Segment [Member]
Operating Income (Loss):
Total Operating Income		$ 361us-gaap_OperatingIncomeLoss / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = asgn_PhysicianSegmentMember

X

- Details

Name:	asgn_SegmentReportingInformationGrossProfitAbstract
Namespace Prefix:	asgn_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(2)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

Name:	us-gaap_AmortizationOfIntangibleAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1,2)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

+ Details

Name:	us-gaap_GrossProfit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfReportableSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The net result for the period of deducting operating expenses from operating revenues.

+ References

No definition available.

+ Details

Name:	us-gaap_OperatingIncomeLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Aggregate revenue during the period from services rendered in the normal course of business, after deducting allowances and discounts.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(d))

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

+ Details

Name:	us-gaap_SalesRevenueServicesNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_SegmentReportingInformationOperatingIncomeLossAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_SegmentReportingInformationRevenueAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=asgn_PhysicianSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=asgn_ApexSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=asgn_LifeSciencesEuropeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=asgn_OxfordSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=us-gaap_CorporateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: