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Net revenues - Schedule of contract cost assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Opening balance	$ 225,897
Closing balance	238,794	$ 225,897
Sales incentive programs
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Opening balance	33,390	35,366
Closing balance	32,296	33,390
Amortization	22,227	19,960
Transition activities
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Opening balance	192,507	170,132
Closing balance	206,498	192,507
Amortization	$ 79,779	$ 68,770

X

- Definition

Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 340
-SubTopic 40
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123353750&loc=SL49131252-203054

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- Definition

Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 340
-SubTopic 40
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123353750&loc=SL49131252-203054

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+ References

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