Segment Information - Information on Reportable Segments (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Document Fiscal Year Focus		2022
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenues		$ 764.7	$ 868.1	$ 764.3
Reconciliation of Net Earnings from Segments [Abstract]
Interest expense, net		3.9	14.2	16.4
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	[1]	(418.2)	104.6	11.3
Provision for (benefit from) income taxes		11.9	(45.6)	8.4
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent		(430.1)	150.2	2.9
Reconciliation of Depreciation and Amortization [Abstract]
Depreciation and amortization		53.9	62.5	60.6
Reconciliation of Research and Development Expense [Abstract]
Research and development expenses		81.7	92.8	92.9
Operating segments
Reconciliation of Net Earnings from Segments [Abstract]
(Loss) earnings before interest and income taxes	[1]	(363.8)	180.7	76.6
Reconciliation of Capital Expenditures [Abstract]
Capital expenditures		32.1	48.6	31.9
Reconciliation of Research and Development Expense [Abstract]
Research and development expenses		81.7	92.8	92.9
Operating segments | Precision Devices
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenues		242.9	201.1	173.1
Reconciliation of Net Earnings from Segments [Abstract]
(Loss) earnings before interest and income taxes		56.1	43.7	31.7
Reconciliation of Depreciation and Amortization [Abstract]
Depreciation and amortization		13.8	13.3	10.5
Reconciliation of Capital Expenditures [Abstract]
Capital expenditures		7.4	5.6	9.6
Reconciliation of Research and Development Expense [Abstract]
Research and development expenses		12.3	10.5	6.7
Operating segments | Consumer MEMS Microphones
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenues		291.9	435.7	417.6
Reconciliation of Net Earnings from Segments [Abstract]
(Loss) earnings before interest and income taxes		(504.5)	60.0	22.6
Reconciliation of Depreciation and Amortization [Abstract]
Depreciation and amortization		29.5	39.9	41.0
Reconciliation of Capital Expenditures [Abstract]
Capital expenditures		17.2	29.2	13.9
Reconciliation of Research and Development Expense [Abstract]
Research and development expenses		52.4	65.7	70.0
Operating segments | MedTech & Specialty Audio
Reconciliation from Segment Totals to Consolidated [Abstract]
Revenues		229.9	231.3	173.6
Reconciliation of Net Earnings from Segments [Abstract]
(Loss) earnings before interest and income taxes		84.6	77.0	22.3
Reconciliation of Depreciation and Amortization [Abstract]
Depreciation and amortization		8.1	6.3	6.0
Reconciliation of Capital Expenditures [Abstract]
Capital expenditures		7.3	11.6	8.0
Reconciliation of Research and Development Expense [Abstract]
Research and development expenses		16.9	16.1	14.6
Corporate, Non-Segment [Member]
Reconciliation of Net Earnings from Segments [Abstract]
Corporate Expense and Other		50.5	61.9	48.9
Reconciliation of Depreciation and Amortization [Abstract]
Depreciation and amortization		2.5	3.0	3.1
Reconciliation of Capital Expenditures [Abstract]
Capital expenditures		0.2	2.2	0.4
Reconciliation of Research and Development Expense [Abstract]
Research and development expenses		$ 0.1	$ 0.5	$ 1.6

[1]  Years Ended December 31,(in millions)202220212020Revenues:Precision Devices$242.9 $201.1 $173.1 MedTech & Specialty Audio229.9 231.3 173.6 Consumer MEMS Microphones291.9 435.7 417.6 Total revenues$764.7 $868.1 $764.3 (Loss) earnings from continuing operations before interest and income taxes:Precision Devices$56.1 $43.7 $31.7 MedTech & Specialty Audio84.6 77.0 22.3 Consumer MEMS Microphones(504.5)60.0 22.6 Total segments(363.8)180.7 76.6 Corporate expense / other50.5 61.9 48.9 Interest expense, net3.9 14.2 16.4 (Loss) earnings before income taxes and discontinued operations(418.2)104.6 11.3 Provision for (benefit from) income taxes11.9 (45.6)8.4 (Loss) earnings from continuing operations$(430.1)$150.2 $2.9 Depreciation and amortization:Precision Devices$13.8 $13.3 $10.5 MedTech & Specialty Audio8.1 6.3 6.0 Consumer MEMS Microphones29.5 39.9 41.0 Corporate2.5 3.0 3.1 Total$53.9 $62.5 $60.6 Capital expenditures:Precision Devices$7.4 $5.6 $9.6 MedTech & Specialty Audio7.3 11.6 8.0 Consumer MEMS Microphones17.2 29.2 13.9 Corporate0.2 2.2 0.4 Total$32.1 $48.6 $31.9 Research and development:Precision Devices$12.3 $10.5 $6.7 MedTech & Specialty Audio16.9 16.1 14.6 Consumer MEMS Microphones52.4 65.7 70.0 Corporate0.1 0.5 1.6 Total$81.7 $92.8 $92.9