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v3.22.1

REVENUE - Nature of Goods and Services (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
REVENUE |  |
Deferred revenue | $ 6,165 | $ 7,067

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- Definition Deferred Service Revenue + References No definition available. + Details
Name: | aeis_DeferredServiceRevenue
Namespace Prefix: | aeis_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_RevenueFromContractWithCustomerAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration