Performance-Based Common Stock Warrants - Assumptions Used in Valuation and Weighted Average Fair Value of Warrants (Details) - Common Stock Purchase Warrants	Jan. 01, 2020 $ / shares	Jun. 30, 2019 $ / shares
Class of Warrant or Right [Line Items]
Fair value (in dollars per share)	$ 17.19	$ 10.61
Price of Universal Electronics Inc. common stock (in dollars per share)	$ 52.21	$ 40.69
Risk-free interest rate
Class of Warrant or Right [Line Items]
Valuation assumption rate	0.0162	0.0172
Expected volatility
Class of Warrant or Right [Line Items]
Valuation assumption rate	0.4886	0.4632
Expected life
Class of Warrant or Right [Line Items]
Expected life	3 years	3 years 6 months