Summary of Changes in Goodwill (Details) $ in Thousands	12 Months Ended
Dec. 31, 2020 USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
Balance at beginning of year	$ 274,710
Goodwill adjustment from acquisitions	(93)
Effect of foreign exchange rate changes	11,363
Balance at end of year	$ 285,980

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
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-Subparagraph (SX 210.9-03(10)(1))
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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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