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Accounts Receivable, Net of Allowance for Credit Losses - Allowance for Credit Losses (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Provisions For Doubtful Accounts [Line Items]
Opening balance	$ 29,969	$ 23,960
Adjusted balance as of January 1	34,154	23,960
Additions due to acquisitions		1,004
Additions charged/reversal released to cost and expense	737	7,443
Deductions/effect of exchange rate fluctuations	(1,167)	(2,438)
Closing balance	$ 33,724	29,969
ASC 326
Provisions For Doubtful Accounts [Line Items]
Transition period adjustment on accounts receivables (through retained earnings) pursuant to ASC 326		$ 4,185

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- Definition

Allowance for doubtful accounts receivable adjusted balance.

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Allowance for doubtful accounts receivable charged/reversal released to cost and expense.

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- Definition

Allowance for Doubtful Accounts Receivable Deductions and Foreign Currency Translation Adjustments

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- Definition

Transition period adjustment on accounts receivables through retained earnings.

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- Definition

Amount of allowance for credit loss on accounts receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5074-111524

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
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-URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118955202&loc=SL82895884-210446

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- Definition

Amount of increase (decrease) in allowance for credit loss on accounts receivable.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447

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