CONSOLIDATED STATEMENTS OF EARNINGS - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Revenues		$ 764.7	$ 868.1	$ 764.3
Cost of goods sold		456.2	508.6	490.8
Restructuring charges - cost of goods sold		32.2	0.0	2.3
Gross Profit, Total		276.3	359.5	271.2
Research and development expenses		81.7	92.8	92.9
Selling and administrative expenses		128.9	146.4	131.5
Total impairment charges		470.9	4.0	7.6
Restructuring charges		9.6	0.5	10.0
Operating expenses		691.1	243.7	242.0
Operating (loss) earnings		(414.8)	115.8	29.2
Interest expense, net		3.9	14.2	16.4
Other (income) expense, net		(0.5)	(3.0)	1.5
Provision for (benefit from) income taxes		11.9	(45.6)	8.4
(Loss) earnings from continuing operations		(430.1)	150.2	2.9
Earnings (loss) from discontinued operations, net		0.0	0.2	3.7
Net (loss) earnings		$ (430.1)	$ 150.4	$ 6.6
Earnings per share:
Income (Loss) from Continuing Operations, Per Basic Share		$ (4.69)	$ 1.63	$ 0.03
Income (Loss) from Continuing Operations, Per Diluted Share		(4.69)	1.59	0.03
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Diluted Share		0	0	0.04
Earnings Per Share, Basic		(4.69)	1.63	0.07
Earnings Per Share, Diluted		$ (4.69)	$ 1.59	$ 0.07
Weighted-average common shares outstanding:
Basic (in shares)	[1]	91,700,000	92,300,000	91,700,000
Diluted (in shares)	[1]	91,700,000	94,700,000	92,900,000
(Loss) earnings before income taxes	[2]	$ (418.2)	$ 104.6	$ 11.3

[1]  Years Ended December 31, 202220212020Revenues$764.7 $868.1 $764.3 Cost of goods sold456.2 508.6 490.8 Restructuring charges - cost of goods sold32.2 — 2.3 Gross profit276.3 359.5 271.2 Research and development expenses81.7 92.8 92.9 Selling and administrative expenses128.9 146.4 131.5 Impairment charges470.9 4.0 7.6 Restructuring charges9.6 0.5 10.0 Operating expenses691.1 243.7 242.0 Operating (loss) earnings(414.8)115.8 29.2 Interest expense, net3.9 14.2 16.4 Other (income) expense, net(0.5)(3.0)1.5 (Loss) earnings before income taxes and discontinued operations(418.2)104.6 11.3 Provision for (benefit from) income taxes11.9 (45.6)8.4 (Loss) earnings from continuing operations(430.1)150.2 2.9 Earnings from discontinued operations, net— 0.2 3.7 Net (loss) earnings$(430.1)$150.4 $6.6 (Loss) earnings per share from continuing operations:Basic$(4.69)$1.63 $0.03 Diluted$(4.69)$1.59 $0.03 Earnings per share from discontinued operations:Basic$— $— $0.04 Diluted$— $— $0.04 Net (loss) earnings per share:Basic$(4.69)$1.63 $0.07 Diluted$(4.69)$1.59 $0.07 Weighted-average common shares outstanding:Basic91.7 92.3 91.7 Diluted91.7 94.7 92.9 

[2]  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