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Business Combinations - Pro Forma Results (Details) - Residential Control Systems, Inc - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Business Acquisition [Line Items]    
Net sales $ 680,241 $ 696,352
Net income (loss) 11,952 (10,538)
Net income (loss) attributable to Universal Electronics Inc. $ 11,952 $ (10,538)
Basic earnings (loss) per share attributable to Universal Electronics, Inc. (in dollars per share) $ 0.0086 $ (0.73)
Diluted earnings (loss) per share attributable to Universal Electronics, Inc. (in dollars per share) $ 0.0085 $ (0.73)