Goodwill and Intangible Assets - Changes in Goodwill (Detail) $ in Thousands	9 Months Ended
Sep. 30, 2021 USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
Beginning Balance	$ 27,472
Effect of change in exchange rates	(996)
Ending Balance	$ 26,476

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(10)(1))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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Balance Type:	debit
Period Type:	instant