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Goodwill and Acquired Intangible Assets - Summary of Acquired Intangible Assets (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 3,870
Accumulated Amortization	(504)
Carrying Value	$ 3,366
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life	5 years
Gross Amount	$ 3,600
Accumulated Amortization	(464)
Carrying Value	$ 3,136
Other identifiable intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life	3 years 8 months 12 days
Gross Amount	$ 270
Accumulated Amortization	(40)
Carrying Value	$ 230

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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

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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

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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

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- Definition

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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

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