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Goodwill and Other Intangible Assets - Components of Identifiable Intangible assets (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Intangible Assets, Accumulated Amortization | $ 11,169 | $ 8,379
Total Intangible Assets, Gross Carrying Value | 33,099 | 28,429
Total Intangible Assets, Net Carrying Value | $ 21,930 | $ 20,050
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 | 3,694 | 3,027
Intangible Assets, Net Carrying Value | $ 4,305 | $ 4,972
Client Relationships [Member] | Data and Analytics Services [Member] |  |
Amortization Period (In Years) | 12 years | 12 years
Intangible Assets, Gross Carrying Value | $ 19,641 | $ 16,671
Intangible Assets, Accumulated Amortization | 4,866 | 3,415
Intangible Assets, Net Carrying Value | $ 14,775 | $ 13,256
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 | 290
Intangible Assets, Net Carrying Value |  | $ 29
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 | $ 761
Intangible Assets, Accumulated Amortization | 548 | 374
Intangible Assets, Net Carrying Value | $ 653 | $ 387
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
Trade Name [Member] | Data and Analytics Services [Member] |  |
Amortization Period (In Years) | 5 years | 5 years
Intangible Assets, Gross Carrying Value | $ 1,711 | $ 1,221
Intangible Assets, Accumulated Amortization | 869 | 600
Intangible Assets, Net Carrying Value | $ 842 | $ 621
Technology [Member] | Data and Analytics Services [Member] |  |
Amortization Period (In Years) | 7 years | 7 years
Intangible Assets, Gross Carrying Value | $ 1,979 | $ 1,209
Intangible Assets, Accumulated Amortization | 624 | 424
Intangible Assets, Net Carrying Value | $ 1,355 | $ 785

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- Definition 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. + References No definition available. + Details
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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 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount before 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 928 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount after 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 926 -SubTopic 20 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120154696&loc=d3e54445-107959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph ((a)(1),(b)) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 + Details
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