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Leases - Narrative (Details) $ in Millions | 3 Months Ended
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Mar. 31, 2020 USD ($) lease
Leases [Abstract] |
Remaining lease terms (up to) | 41 years
Number of operating leases not yet commenced | lease | 1
Initial lease liability of operating leases that have not yet commenced | $ | $ 1.6
Term of operating lease that has not yet commenced | 5 years

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- Definition Lessee, Operating Lease, Lease Not Yet Commenced, Number Of Leases + References No definition available. + Details
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Namespace Prefix: | ueic_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Definition Lessee, Operating Lease, Remaining Lease Term + References No definition available. + Details
Name: | ueic_LesseeOperatingLeaseRemainingLeaseTerm
Namespace Prefix: | ueic_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Operating Lease, Lease Not Yet Commenced, Lease Liability + References No definition available. + Details
Name: | ueic_OperatingLeaseLeaseNotYetCommencedLeaseLiability
Namespace Prefix: | ueic_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

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- Definition Term of lessee's operating lease not yet commenced, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980 + Details
Name: | us-gaap_LesseeOperatingLeaseLeaseNotYetCommencedTermOfContract1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant