Commitments and Contingencies - Fair Price Provisions (Details)	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Percentage of voting stock required for approval	66.66%

Fair Price Provision, Percentage of Voting Stock Required for Approval

No definition available.

Name:	ueic_FairPriceProvisionPercentageOfVotingStockRequiredForApproval
Namespace Prefix:	ueic_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant