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Goodwill and Other Intangible Assets - Components of Identifiable Intangible assets (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Intangible Assets, Accumulated Amortization	$ 15,131	$ 14,339
Total Intangible Assets, Gross Carrying Value	33,099	33,099
Total Intangible Assets, Net Carrying Value	$ 17,968	$ 18,760
Client Relationships [Member] | IT Staffing Services [Member]
Amortization Period (In Years)	12 years	12 years
Intangible Assets, Gross Carrying Value	$ 7,999	$ 7,999
Intangible Assets, Accumulated Amortization	4,528	4,361
Intangible Assets, Net Carrying Value	$ 3,471	$ 3,638
Client Relationships [Member] | Data and Analytics Services [Member]
Amortization Period (In Years)	12 years	12 years
Intangible Assets, Gross Carrying Value	$ 19,641	$ 19,641
Intangible Assets, Accumulated Amortization	6,911	6,503
Intangible Assets, Net Carrying Value	$ 12,730	$ 13,138
Covenant Not-to-Compete [Member] | IT Staffing Services [Member]
Amortization Period (In Years)	5 years	5 years
Intangible Assets, Gross Carrying Value	$ 319	$ 319
Intangible Assets, Accumulated Amortization	319	319
Intangible Assets, Net Carrying Value	$ 0	$ 0
Covenant Not-to-Compete [Member] | Data and Analytics Services [Member]
Amortization Period (In Years)	5 years	5 years
Intangible Assets, Gross Carrying Value	$ 1,201	$ 1,201
Intangible Assets, Accumulated Amortization	848	788
Intangible Assets, Net Carrying Value	$ 353	$ 413
Trade Name [Member] | IT Staffing Services [Member]
Amortization Period (In Years)	3 years	3 years
Intangible Assets, Gross Carrying Value	$ 249	$ 249
Intangible Assets, Accumulated Amortization	249	249
Intangible Assets, Net Carrying Value	$ 0	$ 0
Trade Name [Member] | Data and Analytics Services [Member]
Amortization Period (In Years)	5 years	5 years
Intangible Assets, Gross Carrying Value	$ 1,711	$ 1,711
Intangible Assets, Accumulated Amortization	1,297	1,211
Intangible Assets, Net Carrying Value	$ 414	$ 500
Technology [Member] | Data and Analytics Services [Member]
Amortization Period (In Years)	7 years	7 years
Intangible Assets, Gross Carrying Value	$ 1,979	$ 1,979
Intangible Assets, Accumulated Amortization	979	908
Intangible Assets, Net Carrying Value	$ 1,000	$ 1,071

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
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- Definition

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 928
-SubTopic 340
-Section 50
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-Publisher FASB
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Amount before accumulated amortization of intangible assets, excluding goodwill.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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