XML 87 R68.htm IDEA: XBRL DOCUMENT v3.24.0.1

Goodwill and Other Intangible Assets - Narrative (Detail) $ in Thousands	1 Months Ended				3 Months Ended	12 Months Ended
	Apr. 30, 2023 USD ($)	Feb. 28, 2023 USD ($)	Oct. 31, 2021 USD ($)	Apr. 30, 2021 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2023	Dec. 31, 2023 reporting_unit	Dec. 31, 2023 USD ($)	Dec. 31, 2023 unit	Dec. 31, 2023	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Apr. 01, 2023 USD ($)	Feb. 01, 2023 USD ($)
Goodwill And Other Intangible Assets [Line Items]
Acquired goodwill								$ 69,444
Number of reporting units							5		5
Impairment								7,246
Weighted Average Life (in years)						7 years 10 months 24 days
Intangible amortization								9,395			$ 3,209	$ 2,898
Client relationships
Goodwill And Other Intangible Assets [Line Items]
Weighted Average Life (in years)						9 years 10 months 24 days
Software
Goodwill And Other Intangible Assets [Line Items]
Weighted Average Life (in years)						3 years
Trade name
Goodwill And Other Intangible Assets [Line Items]
Weighted Average Life (in years)						3 years
Atreus
Goodwill And Other Intangible Assets [Line Items]
Acquired goodwill								62,371
Weighted Average Life (in years)		6 years 8 months 12 days
Atreus | Client relationships
Goodwill And Other Intangible Assets [Line Items]
Finite-lived intangibles acquired														$ 11,300
Atreus | Software
Goodwill And Other Intangible Assets [Line Items]
Finite-lived intangibles acquired		$ 5,400
Weighted Average Life (in years)		3 years
Atreus | Trade name
Goodwill And Other Intangible Assets [Line Items]
Finite-lived intangibles acquired		$ 2,500												$ 2,500
Weighted Average Life (in years)		3 years
Atreus | Customer Relationships, Short-Term
Goodwill And Other Intangible Assets [Line Items]
Finite-lived intangibles acquired		$ 6,000
Weighted Average Life (in years)		5 years
Atreus | Customer Relationships, Long-Term
Goodwill And Other Intangible Assets [Line Items]
Finite-lived intangibles acquired		$ 5,300
Weighted Average Life (in years)		14 years
Businessfourzero
Goodwill And Other Intangible Assets [Line Items]
Acquired goodwill					$ 7,100			7,073
Weighted Average Life (in years)	8 years 3 months 18 days
Businessfourzero | Client relationships
Goodwill And Other Intangible Assets [Line Items]
Finite-lived intangibles acquired	$ 3,500												$ 3,500
Weighted Average Life (in years)	9 years
Businessfourzero | Trade name
Goodwill And Other Intangible Assets [Line Items]
Finite-lived intangibles acquired	$ 500												$ 500
Weighted Average Life (in years)	3 years
Executive Search | Europe
Goodwill And Other Intangible Assets [Line Items]
Percentage of fair value excess by carrying value										3.00%
Executive Search | Americas
Goodwill And Other Intangible Assets [Line Items]
Percentage of fair value excess by carrying value										258.00%
On-Demand Talent
Goodwill And Other Intangible Assets [Line Items]
Percentage of fair value excess by carrying value										6.00%
Impairment								0
On-Demand Talent | Atreus
Goodwill And Other Intangible Assets [Line Items]
Acquired goodwill		$ 62,400						62,371
On-Demand Talent | Businessfourzero
Goodwill And Other Intangible Assets [Line Items]
Acquired goodwill								0
On-Demand Talent | Business Talent Group
Goodwill And Other Intangible Assets [Line Items]
Acquired goodwill				$ 45,500
Heidrick Consulting
Goodwill And Other Intangible Assets [Line Items]
Impairment								7,246
Heidrick Consulting | Atreus
Goodwill And Other Intangible Assets [Line Items]
Acquired goodwill								0
Heidrick Consulting | Businessfourzero
Goodwill And Other Intangible Assets [Line Items]
Acquired goodwill	$ 7,100							7,073
Executive Search | Europe
Goodwill And Other Intangible Assets [Line Items]
Impairment								0
Executive Search | Americas
Goodwill And Other Intangible Assets [Line Items]
Impairment								0
Executive Search | Asia Pacific
Goodwill And Other Intangible Assets [Line Items]
Impairment								0
Executive Search | Atreus | Europe
Goodwill And Other Intangible Assets [Line Items]
Acquired goodwill								0
Executive Search | Atreus | Americas
Goodwill And Other Intangible Assets [Line Items]
Acquired goodwill								0
Executive Search | Atreus | Asia Pacific
Goodwill And Other Intangible Assets [Line Items]
Acquired goodwill								0
Executive Search | Businessfourzero | Europe
Goodwill And Other Intangible Assets [Line Items]
Acquired goodwill								0
Executive Search | Businessfourzero | Americas
Goodwill And Other Intangible Assets [Line Items]
Acquired goodwill								0
Executive Search | Businessfourzero | Asia Pacific
Goodwill And Other Intangible Assets [Line Items]
Acquired goodwill								$ 0
Executive Search | H&S Finland | Europe
Goodwill And Other Intangible Assets [Line Items]
Acquired goodwill			$ 1,500

X

- Definition

Goodwill And Other Intangible Assets [Line Items]

+ References

No definition available.

+ Details

Name:	hsii_GoodwillAndOtherIntangibleAssetsLineItems
Namespace Prefix:	hsii_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage of fair value excess by carrying value.

+ References

No definition available.

+ Details

Name:	hsii_PercentageOfFairValueExcessByCarryingValue
Namespace Prefix:	hsii_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482665/350-30-50-1

+ Details

Name:	us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
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://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-28

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482686/350-30-45-2

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482665/350-30-50-2

+ Details

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

X

- Definition

The amount of identifiable intangible assets recognized as of the acquisition date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 55
-Paragraph 37
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479303/805-10-55-37

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479907/805-20-50-1

+ Details

Name:	us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 24
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482548/350-20-55-24

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1

+ Details

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

X

- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-28

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 24
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482548/350-20-55-24

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482598/350-20-45-2

+ Details

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

X

- Definition

Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment.

+ References

No definition available.

+ Details

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

X

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_CustomerRelationshipsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_SoftwareAndSoftwareDevelopmentCostsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_TradeNamesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=hsii_AtreusMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=hsii_CustomerRelationshipsShortTermMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=hsii_CustomerRelationshipsLongTermMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=hsii_BusinessFourZeroMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

Name:	srt_StatementGeographicalAxis=srt_EuropeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=srt_AmericasMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=hsii_BusinessTalentGroupMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

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

X

- Details

Name:	srt_StatementGeographicalAxis=srt_AsiaPacificMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=hsii_HSFinlandMemberMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: