XML 65 R49.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Accounts Receivable, Net and Revenue Concentrations - Sales Returns (Details) - USD ($) $ in Millions | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Receivables [Abstract] |  |
Allowance for sales returns | $ 0.3 | $ 0.4

X
- Definition Allowance for Sales Returns, Net Of Unprocessed Returns + References No definition available. + Details
Name: | ueic_AllowanceforSalesReturnsNetOfUnprocessedReturns
Namespace Prefix: | ueic_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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