v3.21.2

INTANGIBLE ASSETS AND GOODWILL - Intangible assets (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Assets	$ 88,100	$ 443,906
Accumulated Amortization	(84,520)	(438,809)
Net	3,580	5,097
Customer Contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Assets		354,242
Accumulated Amortization		$ (354,242)
Amortization Life		7 years
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Assets	32,895	$ 34,691
Accumulated Amortization	(29,445)	(30,112)
Net	$ 3,450	$ 4,579
Trade Names [Member] | Minimum
Finite-Lived Intangible Assets [Line Items]
Amortization Life	8 years	8 years
Trade Names [Member] | Maximum
Finite-Lived Intangible Assets [Line Items]
Amortization Life	15 years	15 years
Collector Database [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Assets	$ 55,205	$ 54,973
Accumulated Amortization	(55,075)	(54,455)
Net	$ 130	$ 518
Amortization Life	5 years	5 years

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.

+ References

No definition available.

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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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-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

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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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

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