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Goodwill and Other Intangible Assets, net - Components of Identifiable Intangible assets (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Intangible Assets, Accumulated Amortization	$ 16,714	$ 14,339
Total Intangible Assets, Gross Carrying Value	33,099	33,099
Total Intangible Assets, Net Carrying Value	$ 16,385	$ 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	4,861	4,361
Intangible Assets, Net Carrying Value	$ 3,138	$ 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	7,731	6,503
Intangible Assets, Net Carrying Value	$ 11,910	$ 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	967	788
Intangible Assets, Net Carrying Value	$ 234	$ 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	1,467	1,211
Intangible Assets, Net Carrying Value	$ 244	$ 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	1,120	908
Intangible Assets, Net Carrying Value	$ 859	$ 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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