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Goodwill and other intangible assets - Summary of Other Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Other Intangible Assets, Gross:
Other Intangible Assets, Gross	$ 679,206	$ 709,487
Accumulated Amortization	(401,063)	(387,553)
Other Intangible Assets, Net	278,143	321,934
Patents
Other Intangible Assets, Gross:
Other Intangible Assets, Gross	29,315	29,325
Accumulated Amortization	(16,275)	(14,511)
Customer lists
Other Intangible Assets, Gross:
Other Intangible Assets, Gross	592,195	622,430
Accumulated Amortization	(347,274)	(339,159)
Trade names
Other Intangible Assets, Gross:
Other Intangible Assets, Gross	32,043	32,088
Accumulated Amortization	(14,106)	(12,156)
Proprietary technology
Other Intangible Assets, Gross:
Other Intangible Assets, Gross	22,846	22,813
Accumulated Amortization	(21,394)	(19,833)
Other
Other Intangible Assets, Gross:
Other Intangible Assets, Gross	2,807	2,831
Accumulated Amortization	$ (2,014)	$ (1,894)

X

- 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)
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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
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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

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-Publisher FASB
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