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Interim Consolidated Financial Statements - Summary of Allowance for Expected Credit Losses on Accounts Receivable (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($)
Receivables [Abstract]
Balance at December 31, 2019	$ 628
Cumulative effect adjustment of adopting Topic 326	218
Provision for expected credit losses	433
Net write-offs	(122)
Translation adjustments	(13)
Balance at March 31, 2020	$ 1,144

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Accounts receivable, allowance for credit loss, translation adjustments.

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Amount of expense (reversal of expense) for expected credit loss on accounts receivable from change in methodology.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 11
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919244-210447

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Amount of allowance for credit loss on accounts receivable.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Amount of direct write-downs of accounts receivable charged against the allowance.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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