Performance-Based Common Stock Warrants - Fair Value Assumptions (Details) - Common stock purchase warrant - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Class of Warrant or Right [Line Items]
Fair value (in dollars per share)	$ 24.17	$ 38.32	$ 24.17	$ 38.32
Price of Universal Electronics Inc. common stock (in dollars per share)	$ 62.1	$ 74.99	$ 62.1	$ 74.99
Risk-free interest rate	1.93%	1.32%	1.93%	1.32%
Expected volatility	34.41%	40.54%	34.41%	40.54%
Expected life in years	5 years 3 months 3 days	6 years 3 months	5 years 3 months 3 days	6 years 3 months