Segment Information - Reportable Segments Adjusted Working Capital and Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Document Fiscal Year Focus	2021
Revenues	$ 868.1	$ 764.3	$ 854.8
Total assets	1,731.6	1,654.9
Operating segments | Audio
Segment Reporting Information [Line Items]
Revenues	667.0	591.2	682.8
Total assets	1,467.1	1,470.4
Operating segments | Precision Devices
Segment Reporting Information [Line Items]
Revenues	201.1	173.1	$ 172.0
Total assets	260.4	179.2
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Total assets	$ 4.1	$ 5.3