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Intangible Assets, net and Goodwill - Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 28,021	$ 33,734
Accumulated Amortization	(11,664)	(12,357)
Net Carrying Value	$ 16,357	$ 21,377
Weighted Average
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life in Years	6 years 3 months 18 days	6 years 2 months 12 days
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 2,840	$ 3,070
Accumulated Amortization	(1,550)	(1,296)
Net Carrying Value	$ 1,290	$ 1,774
Customer relationships | Weighted Average
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life in Years	5 years	5 years
Database
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 8,330	$ 8,330
Accumulated Amortization	(1,787)	(954)
Net Carrying Value	$ 6,543	$ 7,376
Database | Weighted Average
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life in Years	10 years	10 years
Technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 6,539	$ 10,541
Accumulated Amortization	(3,641)	(6,074)
Net Carrying Value	$ 2,898	$ 4,467
Technology | Weighted Average
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life in Years	4 years	5 years
Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 1,890	$ 2,690
Accumulated Amortization	(732)	(898)
Net Carrying Value	$ 1,158	$ 1,792
Trademarks and trade names | Weighted Average
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life in Years	5 years	6 years
Partner relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 680	$ 680
Accumulated Amortization	(680)	(680)
Net Carrying Value	$ 0	$ 0
Partner relationships | Weighted Average
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life in Years	3 years	3 years
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 7,400	$ 7,400
Accumulated Amortization	(2,964)	(1,484)
Net Carrying Value	$ 4,436	$ 5,916
Non-compete agreements | Weighted Average
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life in Years	5 years	5 years
Domain names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 90	$ 301
Accumulated Amortization	(70)	(276)
Net Carrying Value	$ 20	$ 25
Domain names | Weighted Average
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life in Years	5 years	5 years
Patents
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 252	$ 252
Accumulated Amortization	(240)	(225)
Net Carrying Value	$ 12	$ 27
Patents | Weighted Average
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life in Years	5 years	5 years
Backlog
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value		$ 470
Accumulated Amortization		(470)
Net Carrying Value		$ 0
Backlog | Weighted Average
Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life in Years		1 year

X

- 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.

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+ 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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+ 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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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 926
-SubTopic 20
-Section 50
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