Segment information - Schedule of Revenue by Geographic Region (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Total net sales	$ 1,286,671	$ 1,353,215	$ 1,359,132
United States
Segment Reporting Information [Line Items]
Total net sales	482,000	503,000	500,000
China
Segment Reporting Information [Line Items]
Total net sales	201,000	200,000	169,000
Rest of the World
Segment Reporting Information [Line Items]
Total net sales	$ 604,000	$ 650,000	$ 690,000