Knowles (KN) 10-Q 2 Nov 23 2023 Q3 Quarterly report Financial data

Cover

Cover - shares	9 Months Ended
	Sep. 30, 2023	Oct. 31, 2023
Cover [Abstract]
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	001-36102
Entity Registrant Name	Knowles Corporation
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	90-1002689
Entity Address, Address Line One	1151 Maplewood Drive,
Entity Address, City or Town	Itasca,
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60143
City Area Code	(630)
Local Phone Number	250-5100
Title of 12(b) Security	Common stock, $0.01 par value per share
Trading Symbol	KN
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		90,257,146
Document Type	10-Q
Entity Central Index Key	0001587523
Current Fiscal Year End Date	--12-31
Document Period End Date	Sep. 30, 2023
Document Fiscal Period Focus	Q3
Amendment Flag	false
Document Fiscal Year Focus	2023

CONSOLIDATED STATEMENTS OF EARN

CONSOLIDATED STATEMENTS OF EARNINGS (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Financial Position [Abstract]
Gain (Loss) on Disposition of Assets	$ 5.2	$ 0	$ 10	$ 0
Revenues	175.1	178.2	492.4	567.6
Cost of goods sold	102.7	110.1	298.9	338.5
Gross profit	77.5	40	205	201
Research and development expenses	19.8	19.3	59.5	63.7
Selling and administrative expenses	34.6	32.6	104.9	95.6
Restructuring charges	1.5	2.7	3.1	9.8
Operating expenses	55.9	54.6	167.5	408.9
Operating earnings (loss)	21.6	(14.6)	37.5	(207.9)
Other (income) expense, net	(0.5)	(2.1)	0.5	(0.9)
Earnings (loss) before income taxes	21.5	(13.6)	34.8	(209.7)
Provision for (benefit from) income taxes	4.9	(16.3)	9.8	12.4
Net earnings (loss)	$ 16.6	$ 2.7	$ 25	$ (222.1)
Earnings per share:
Net earnings (loss) per share, basic	$ 0.18	$ 0.03	$ 0.27	$ (2.42)
Net earnings (loss) per share, diluted	$ 0.18	$ 0.03	$ 0.27	$ (2.42)
Weighted-average common shares outstanding:
Basic (in shares)	90,800,000	91,400,000	91,200,000	91,900,000
Diluted (in shares)	91,400,000	92,000,000	91,900,000	91,900,000
Restructuring charges - cost of goods sold	$ 0.1	$ 28.1	$ (1.5)	$ 28.1
Asset Impairment Charges	0	0	0	239.8
Interest Income (Expense), Net	$ 0.6	$ 1.1	$ 2.2	$ 2.7

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net earnings (loss)	$ 16.6	$ 2.7	$ 25	$ (222.1)
Foreign currency translation	(1.2)	(13.1)	(10.9)	(30.9)
Employee benefit plans:
Amortization or settlement of actuarial losses and prior service costs	0	(0.2)	0.4	(0.2)
Net change in employee benefit plans	0	(0.2)	0.4	(0.2)
Changes in fair value of cash flow hedges:
Unrealized net losses arising during period	(1.2)	(3)	(5.1)	(6.1)
Net losses reclassified into earnings	0.8	1.7	1.3	2.3
Total cash flow hedges	(0.4)	(1.3)	(3.8)	(3.8)
Other comprehensive loss, net of tax	(1.6)	(14.6)	(14.3)	(34.9)
Comprehensive earnings (loss)	$ 15	$ (11.9)	$ 10.7	$ (257)

CONSOLIDATED BALANCE SHEETS (Un

CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 75.1	$ 48.2
Accounts Receivable, after Allowance for Credit Loss, Current	119	134.7
Inventories, net	184.1	169.5
Prepaid and other current assets	9.6	10
Total current assets	387.8	362.4
Property, plant, and equipment, net	144.6	161.8
Goodwill	471	471
Intangible assets, net	78.3	85.1
Operating Lease, Right-of-Use Asset	10.7	12.6
Other assets and deferred charges	(89.8)	(91)
Total assets	1,182.2	1,183.9
Current liabilities:
Accounts payable	52.3	41.4
Accrued compensation and employee benefits	26.9	26.9
Operating Lease, Liability, Current	4.7	8.4
Other accrued expenses	22.8	19.9
Federal and other taxes on income	0.3	2.5
Total current liabilities	107	99.1
Long-term debt	45	45
Deferred Income Tax Liabilities, Net	0.9	0.9
Operating Lease, Liability, Noncurrent	6.2	7.2
Other liabilities	29.8	38.8
Commitments and contingencies (Note 14)
Stockholders' equity:
Preferred Stock, Value, Issued	0	0
Common Stock, Value, Issued	1	1
Treasury Stock, Value	(130.8)	(103.3)
Additional paid-in capital	1,682.7	1,665.5
Accumulated deficit	(423.2)	(448.2)
Accumulated other comprehensive loss	(136.4)	(122.1)
Total stockholders' equity	993.3	992.9
Total liabilities and stockholders' equity	$ 1,182.2	$ 1,183.9
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01
Common stock, shares authorized (in shares)	400,000,000
Common stock, shares issued (in shares)	97,240,535	96,431,604
Common Stock, Shares, Outstanding	90,257,146	91,078,376
Treasury Stock, Common, Shares	6,983,389	5,353,228

CONSOLIDATED BALANCE SHEETS (_2

CONSOLIDATED BALANCE SHEETS (unaudited) (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Allowance for doubtful accounts receivable	$ 0.4	$ 1.1
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01
Common stock, shares authorized (in shares)	400,000,000
Common stock, shares issued (in shares)	97,240,535	96,431,604

CONSOLIDATED STATEMENT OF STOCK

CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (unaudited) - USD ($) $ in Millions	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss	Treasury Stock, Common
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock, shares issued (in shares)		95,112,778
Treasury Stock, Common, Shares						(3,217,798)
Balance at Dec. 31, 2021	$ 1,459.5	$ 1	$ 1,639.4	$ (18.1)	$ (100.4)	$ (62.4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	(222.1)
Stock Repurchased During Period, Value						(44)
Net earnings (loss)	(222.1)
Other comprehensive (loss) earnings, net of tax	(34.9)				(34.9)
Stock-based compensation expense	21.6		21.6
Stock Issued During Period, Shares, New Issues		529,199
Stock Issued During Period, Value, Stock Options Exercised	6.4	$ 0	6.4
Restricted Stock, Shares Issued Net of Shares for Tax Withholdings		657,698
Balance at Sep. 30, 2022	1,180.2	$ 1	1,658	(240.2)	(135.3)	$ (103.3)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Repurchased During Period, Shares						(2,339,045)
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	0.4
Shares Issued During Period, Value, Exercise of Warrants	0		3.1			$ 3.1
Shares Issued During Period, Shares, Exercise of Warrants						203,615
Restricted Stock, Value, Shares Issued Net of Tax Withholdings			(6.3)
Common stock, shares issued (in shares)		96,254,641
Treasury Stock, Common, Shares						(4,263,678)
Balance at Jun. 30, 2022	1,203.6	$ 1	1,650.9	(242.9)	(120.7)	$ (84.7)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	2.7
Stock Repurchased During Period, Value						(18.6)
Net earnings (loss)	2.7
Other comprehensive (loss) earnings, net of tax	(14.6)				(14.6)
Stock-based compensation expense	6.8		6.8
Stock Issued During Period, Shares, New Issues		29,672
Stock Issued During Period, Value, Stock Options Exercised	0.4	$ 0	0.4
Restricted Stock, Shares Issued Net of Shares for Tax Withholdings		15,362
Balance at Sep. 30, 2022	1,180.2	$ 1	1,658	(240.2)	(135.3)	$ (103.3)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Repurchased During Period, Shares						(1,089,550)
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	0.4
Restricted Stock, Value, Shares Issued Net of Tax Withholdings	$ (0.1)		(0.1)
Common stock, shares issued (in shares)		96,299,675
Treasury Stock, Common, Shares						(5,353,228)
Common stock, shares issued (in shares)	96,431,604	96,431,604
Treasury Stock, Common, Shares	5,353,228					(5,353,228)
Balance at Dec. 31, 2022	$ 992.9	$ 1	1,665.5	(448.2)	(122.1)	$ (103.3)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	25			25
Stock Repurchased During Period, Value						(27.5)
Net earnings (loss)	25
Other comprehensive (loss) earnings, net of tax	(14.3)				(14.3)
Stock-based compensation expense	21.8		21.8
Stock Issued During Period, Shares, New Issues		195,170
Stock Issued During Period, Value, Stock Options Exercised	1.6	$ 0	1.6
Restricted Stock, Shares Issued Net of Shares for Tax Withholdings		613,761
Balance at Sep. 30, 2023	993.3	$ 1	1,682.7	(423.2)	(136.4)	$ (130.8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Repurchased During Period, Shares						(1,630,161)
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	(0.9)
Restricted Stock, Value, Shares Issued Net of Tax Withholdings	(6.2)		(6.2)
Common stock, shares issued (in shares)		97,228,853
Treasury Stock, Common, Shares						(6,086,666)
Balance at Jun. 30, 2023	986.5	$ 1	1,675.9	(439.8)	(134.8)	$ (115.8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	16.6			16.6
Stock Repurchased During Period, Value						(15)
Net earnings (loss)	16.6
Other comprehensive (loss) earnings, net of tax	(1.6)				(1.6)
Stock-based compensation expense	6.9		6.9
Stock Issued During Period, Shares, New Issues		1,929
Stock Issued During Period, Value, Stock Options Exercised	0	$ 0	0
Restricted Stock, Shares Issued Net of Shares for Tax Withholdings		9,753
Balance at Sep. 30, 2023	993.3	$ 1	1,682.7	$ (423.2)	$ (136.4)	$ (130.8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Repurchased During Period, Shares						(896,723)
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	(0.1)
Restricted Stock, Value, Shares Issued Net of Tax Withholdings	$ (0.1)		$ (0.1)
Common stock, shares issued (in shares)	97,240,535	97,240,535
Treasury Stock, Common, Shares	6,983,389					(6,983,389)

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Operating Activities
Net earnings (loss)	$ 25	$ (222.1)
Adjustments to reconcile net earnings (loss) to cash from operating activities:
Depreciation and amortization	33.8	41.7
Stock-based compensation	21.8	21.6
Asset Impairment Charges	0	239.8
Gain (Loss) on Disposition of Assets	10	0
Gain (Loss) on Disposition of Other Assets	(10)	0.2
Restructuring charges	(1.8)	8.9
Non-cash interest expense and amortization of debt issuance costs	0.6	0.5
Deferred income taxes	1.6	(2)
Other, net	(2.4)	(7.4)
Changes in assets and liabilities (excluding effects of foreign exchange):
Receivables, net	15.5	16.8
Inventories, net	(19)	(50.3)
Prepaid and other current assets	(0.8)	(1.5)
Accounts payable	11.3	(24.6)
Accrued compensation and employee benefits	0.3	(16.7)
Other accrued expenses	(2.7)	5.8
Increase Decrease Accrued Taxes, Net	(2.3)	9
Other non-current assets and non-current liabilities	(8.6)	19.8
Net Cash Provided by (Used in) Operating Activities	62.3	39.5
Investing Activities
Proceeds from Sale of Property, Plant, and Equipment	12.4	0
Capital expenditures	(11.8)	(24.7)
Asset Acquisition, Price of Acquisition, Expected	(0.3)	0
Payments to Acquire Businesses, Net of Cash Acquired	0	0.7
Payments for (Proceeds from) Investments	(0.4)	0
Proceeds from Sale of Short-term Investments	0.4	0
Net Cash Provided by (Used in) Investing Activities, Total	0.3	(25.4)
Financing Activities
Repayments of Lines of Credit	0	(15)
Borrowings under revolving credit facility	0	23
Payments for Repurchase of Common Stock	27.5	44
Tax on stock option exercises and restricted and performance stock unit vesting	(6.2)	(6.3)
Payments of finance lease obligations	(1.3)	(4.2)
Payments of Debt Issuance Costs	(1.9)	0
Proceeds from exercise of stock options	1.6	6.4
Net Cash Provided by (Used in) Financing Activities, Total	(35.3)	(40.1)
Effect of Exchange Rate on Cash and Cash Equivalents [Abstract]
Effect of exchange rate changes on cash and cash equivalents	(0.4)	(1.4)
Net increase (decrease) in cash and cash equivalents	26.9	(27.4)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations	75.1	41.5
Supplemental information - cash paid for:
Income taxes	9	3.9
Interest	$ 2.8	$ 2.4

Basis of Presentation (Notes)

Basis of Presentation (Notes)	9 Months Ended
	Sep. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business Description and Basis of Presentation	1. Basis of Presentation Background - Knowles Corporation (NYSE:KN) is a market leader and global provider of advanced micro-acoustic microphones and balanced armature speakers, audio solutions, and high performance capacitors and radio frequency ("RF") products, serving the consumer electronics, medtech, defense, electric vehicle, industrial, and communications markets. The Company uses its leading position in SiSonic TM micro-electro-mechanical systems ("MEMS") microphones and strong capabilities in audio processing technologies to optimize audio systems and improve the user experience across consumer applications. Knowles is also a leader in hearing health acoustics, high performance capacitors, and RF solutions for a diverse set of markets. The Company's focus on the customer, combined with its unique technology, proprietary manufacturing techniques, and global operational expertise, enable the Company to deliver innovative solutions across multiple applications. References to "Knowles," "the Company," "we," "our," and "us" refer to Knowles Corporation and its consolidated subsidiaries. Financial Statement Presentation - The accompanying unaudited interim Consolidated Financial Statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission ("SEC") for quarterly reports on Form 10-Q and do not include all of the information and note disclosures required by U.S. generally accepted accounting principles (“GAAP” or “U.S. GAAP”) for complete financial statements. These unaudited interim Consolidated Financial Statements should therefore be read in conjunction with the Consolidated Financial Statements and Notes thereto for the year ended December 31, 2022 included in the Company’s Annual Report on Form 10-K. The accompanying unaudited interim Consolidated Financial Statements have been prepared in accordance with U.S. GAAP, which requires management to make estimates and assumptions that affect amounts reported in the Consolidated Financial Statements and accompanying disclosures. Although these estimates are based on management’s best knowledge of current events and actions that the Company may undertake in the future, actual results may differ from those estimates. Management uses historical experience and all available information to make these estimates. The unaudited interim Consolidated Financial Statements reflect all adjustments of a normal, recurring nature that are, in the opinion of management, necessary for a fair statement of results for these interim periods. Share Repurchase Program - On February 24, 2020, the Company announced that its Board of Directors had authorized a share repurchase program of up to $100.0 million of the Company's common stock. On April 28, 2022, the Company announced that its Board of Directors had increased the authorization by up to $150.0 million in additional aggregate value. The timing and amount of any shares repurchased will be determined by the Company based on its evaluation of market conditions and other factors, and will be made in accordance with applicable securities laws in either the open market or in privately negotiated transactions. The Company is not obligated to purchase any shares under the program, and the program may be suspended or discontinued at any time. The actual timing, number, and share price of shares repurchased will depend on a number of factors, including the market price of the Company’s common stock, general market and economic conditions, and applicable legal requirements. Any shares repurchased will be held as treasury stock. During the nine months ended September 30, 2023 and 2022, the Company repurchased 1,630,161 shares and 2,339,045 shares of common stock, respectively, for a total of $27.5 million and $44.0 million, respectively. Non-cash Investing Activities - Purchases of property, plant, and equipment included in accounts payable at both September 30, 2023 and September 30, 2022 were $1.6 million. These non-cash amounts are not reflected as "Capital expenditures" within Investing Activities on the Consolidated Statements of Cash Flows for the respective periods. Operating lease liabilities arising from obtaining right-of-use assets for the nine months ended September 30, 2023 and 2022 were $2.5 million and $1.9 million, respectively. The purchase price for the asset acquisition that occurred during the third quarter of 2023 includes $1.7 million of contingent consideration. This non-cash amount is not reflected in “Acquisition of asset” within Investing Activities on the Consolidated Statements of Cash Flows for the nine months ended September 30, 2023. See also Note 7. Goodwill and Other Intangible Assets.

Recent Accounting Standards (No

Recent Accounting Standards (Notes)	9 Months Ended
	Sep. 30, 2023
Accounting Standards Update and Change in Accounting Principle [Abstract]
Recent Accounting Standards	2. Recent Accounting Standards There are no recently issued or adopted accounting standards that impact the Consolidated Financial Statements of the Company as of September 30, 2023.

Business Combinations

Business Combinations	3 Months Ended
	Jun. 30, 2022
Business Combinations [Abstract]
Acquisitions	3. Acquisitions On November 1, 2023, the Company completed the acquisition of Cornell Dubilier. See Note 16. Subsequent Events. On May 3, 2021, the Company acquired all of the outstanding shares of common stock of Integrated Microwave Corporation ("IMC") for $81.4 million. During the first quarter of 2022, the Company recorded a purchase price adjustment of $0.7 million that was paid during the second quarter of 2022. The adjustment, which did not impact the Consolidated Statements of Earnings, resulted in an increase to goodwill of $0.7 million. The acquired business provides RF filters to the defense, industrial, and communications markets. The transaction was accounted for under the acquisition method of accounting and the results of operations are included in the Consolidated Financial Statements from the date of acquisition in the Precision Devices ("PD") segment.

Impairment Charges

Impairment Charges	9 Months Ended
	Sep. 30, 2023
Unusual or Infrequent Items, or Both [Abstract]
Asset Impairment Charges	4. Impairment Charges The Company tests goodwill for impairment at least annually as of October 1, or more frequently if there are events or circumstances indicating the carrying value of individual reporting units may exceed their respective fair values on a more likely than not basis. Recoverability of goodwill is measured at the reporting unit level. The Company’s three reporting units are Precision Devices ("PD"), MedTech & Specialty Audio ("MSA"), and Consumer MEMS Microphones ("CMM"). The impairment assessment compares the fair value of each reporting unit to its carrying value. Impairment is measured as the amount by which the carrying value of a reporting unit exceeds its fair value. During the second quarter of 2022, the Company identified a triggering event requiring an interim impairment assessment for the CMM reporting unit (previously referred to as Mobile Consumer Electronics or "MCE"), which resulted in a goodwill impairment charge of $239.8 million. The triggering event occurred due to the identification of a rapid decline in current demand and a reduction in the expected future growth rate for global consumer electronics, which resulted in reductions to forecasted revenue and terminal growth rates and profit margins. The goodwill impairment charge is presented within "Impairment charges" in "Operating expenses" on the Consolidated Statements of Earnings. The Company had not incurred any previous goodwill impairment charges. Additionally, during the fourth quarter of 2022, the Company identified another triggering event requiring an impairment assessment of the CMM reporting unit, which resulted in a goodwill impairment charge of $231.1 million. This triggering event occurred due to the identification of further declines in forecasted demand for global consumer electronics, resulting in reductions to forecasted revenue and profit margins. In addition, the Company’s assumptions for weighted average cost of capital and income tax rates increased as a result of rising interest rates and not satisfying certain tax holiday conditions. Fair value was estimated using a discounted cash flow model that included the Company’s market participant assumptions, forecasted future cash flows based on historical performance and future estimated results, determinations of appropriate discount rates, and other assumptions which were considered reasonable and inherent in the discounted cash flow analysis. The fair value estimate was based on known or knowable information at the assessment date. Significant assumptions used in the model included forecasted revenue and terminal growth rates, profit margins, income taxes, and the Company's weighted average cost of capital. The fair value measurements for reporting units are based on significant unobservable inputs, and thus represent Level 3 inputs. Fair value measurements require considerable judgment and are sensitive to changes in underlying assumptions. As a result, there can be no assurance that estimates and assumptions made for purposes of the impairment assessment will prove to be an accurate prediction of the future. Potential circumstances that could have a negative effect on the fair value of our reporting units include, but are not limited to, lower than forecasted growth rates or profit margins and changes in the weighted average cost of capital. A reduction in the estimated fair value of the reporting units could trigger an impairment in the future. The Company cannot predict the occurrence of certain events or changes in circumstances that might adversely affect the carrying value of goodwill.

Inventories, net (Notes)

Inventories, net (Notes)	9 Months Ended
	Sep. 30, 2023
Inventory, Net [Abstract]
Inventories, net	5. Inventories, net The following table details the major components of inventories, net: (in millions) September 30, 2023 December 31, 2022 Raw materials $ 129.2 $ 116.1 Work in progress 34.3 28.3 Finished goods 63.6 62.8 Subtotal 227.1 207.2 Less reserves (43.0) (37.7) Total $ 184.1 $ 169.5

Property, Plant, and Equipment,

Property, Plant, and Equipment, net (Notes)	9 Months Ended
	Sep. 30, 2023
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment, net	6. Property, Plant, and Equipment, net The following table details the major components of property, plant, and equipment, net: (in millions) September 30, 2023 December 31, 2022 Land $ 12.4 $ 12.5 Buildings and improvements 112.5 114.6 Machinery, equipment, and other 488.5 531.2 Subtotal 613.4 658.3 Less accumulated depreciation (468.8) (496.5) Total $ 144.6 $ 161.8 Depreciation expense totaled $7.6 million and $9.8 million for the three months ended September 30, 2023 and 2022, respectively. For the nine months ended September 30, 2023 and 2022, depreciation expense totaled $25.0 million and $32.5 million, respectively. During the nine months ended September 30, 2023, the Company entered into an agreement to sell certain of its machinery and equipment related to the CMM segment to a third party for total proceeds of $11.4 million, which were received in their entirety in the second quarter of 2023. The Company transferred control of assets with a fair value of approximately $5.5 million and $11.2 million to the buyer during the three and nine months ended September 30, 2023, resulting in a gain on sale of approximately $5.3 million and $11.0 million, respectively. These gains on sale are reflected in the Consolidated Statements of Earnings as follows: (in millions) Three Months Ended September 30, 2023 Nine Months Ended September 30, 2023 Gain on sale of fixed assets $ (5.2) $ (10.0) Restructuring charges - cost of goods sold (0.1) (1.0) Total $ (5.3) $ (11.0) See also Note 8. Restructuring and Related Activities. The Company has deferred the remaining sale proceeds related to this agreement of approximately $0.2 million until it completes the transfer of control of the remaining assets to the buyer. This liability is included in "Other accrued expenses" on the Consolidated Balance Sheet as of September 30, 2023.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets (Notes)	9 Months Ended
	Sep. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	7. Goodwill and Other Intangible Assets There were no changes in the carrying value of goodwill by reportable segment for the nine months ended September 30, 2023. Other Intangible Assets The gross carrying value and accumulated amortization for each major class of intangible assets are as follows: September 30, 2023 December 31, 2022 (in millions) Gross Carrying Accumulated Gross Carrying Accumulated Amortized intangible assets: Trademarks $ 2.0 $ 1.0 $ 2.0 $ 0.8 Customer relationships 38.4 13.6 36.4 10.3 Developed technology 45.4 25.3 45.4 20.1 Other 2.4 2.0 2.4 1.9 Total 88.2 41.9 86.2 33.1 Unamortized intangible assets: Trademarks 32.0 32.0 Total intangible assets, net $ 78.3 $ 85.1 The Company completed an asset acquisition in the third quarter of 2023. In connection with this acquisition, the Company recognized customer relationships with a fair value of approximately $2.0 million, reflecting cash paid of $0.3 million and contingent consideration with an estimated fair value of $1.7 million. These customer relationships have an estimated useful life of 7 years. Amortization expense totaled $3.0 million and $3.1 million for the three months ended September 30, 2023 and 2022, respectively. For the nine months ended September 30, 2023 and 2022, amortization expense was $8.8 million and $9.2 million, respectively. Amortization expense for the next five years, based on current definite-lived intangible balances, is estimated to be as follows: (in millions) Q4 2023 $ 3.0 2024 11.9 2025 11.5 2026 5.6 2027 5.6 2028 and thereafter 8.7 Total $ 46.3

Restructuring and Related Activ

Restructuring and Related Activities (Notes)	9 Months Ended
	Sep. 30, 2023
Restructuring and Related Activities [Abstract]
Restructuring and Related Activities	8. Restructuring and Related Activities Restructuring and related activities are designed to better align the Company's operations with current market conditions through headcount reductions, targeted facility consolidations, and other measures to further optimize operations and align resources with growth opportunities. The Company recorded restructuring charges of $1.3 million during the three and nine months ended September 30, 2023 for severance pay and benefits related to headcount reductions within the PD segment and $1.4 million during the nine months ended September 30, 2023 for severance pay and benefits related to headcount reductions within the MEMS Microphones product line, which is included within the Consumer MEMS Microphones segment. The Company also recorded $0.4 million and $0.7 million for Corporate charges for the three and nine months ended September 30, 2023, respectively. The Company recognized the majority of these costs within Operating expenses, resulting in total restructuring charges within Operating expenses of $1.5 million and $3.1 million for the three and nine months ended September 30, 2023, respectively. During the three and nine months ended September 30, 2023, the Company recorded gains of $0.1 million and $1.0 million, respectively, for the sale of certain machinery and equipment that was previously written off through restructuring charges within the Consumer MEMS Microphones segment. In addition, during the nine months ended September 30, 2023, the Company recorded a $0.8 million reversal of restructuring charges within the Consumer MEMS Microphones segment related to a change in estimate. The Company recognized these transactions within Gross profit, resulting in total restructuring expense within Gross Profit of $0.1 million for the three months ended September 30, 2023, and credits of $1.5 million for the nine months ended September 30, 2023. During the nine months ended September 30, 2022, the Company restructured its MEMS Microphones product line through two restructuring programs, which are included within the Consumer MEMS Microphones segment. These actions resulted in the settlement of supplier obligations, non-cash fixed asset write-offs, and severance pay. During the nine months ended September 30, 2022, the Company recorded restructuring charges of $35.1 million related to this action, including $21.9 million for the settlement of supplier obligations, $8.9 million in fixed asset write-offs, and $4.3 million in severance pay and benefits. In addition, during the nine months ended September 30, 2022, the Company recorded restructuring charges of $2.2 million for severance pay and benefits related to headcount reductions within the Intelligent Audio product line workforce, which is included within the Consumer MEMS Microphones segment, and $0.6 million for other costs. During the three and nine months ended September 30, 2022 the Company recorded total restructuring charges within Gross profit of $28.1 million primarily for the settlement of supplier obligations, non-cash fixed asset write-offs, and severance pay associated with the MEMS microphones product line. During the three and nine months ended September 30, 2022, the Company recorded total restructuring charges within Operating expenses of $2.7 million and $9.8 million, respectively, primarily for the settlement of supplier obligations and severance pay and benefits associated with the MEMS microphones product line and other actions for headcount reductions within the Intelligent Audio product line workforce. The following table details restructuring charges incurred by reportable segment for the periods presented: Three Months Ended September 30, Nine Months Ended September 30, (in millions) 2023 2022 2023 2022 Precision Devices $ 1.3 $ — $ 1.3 $ — Consumer MEMS Microphones (0.1) 30.7 (0.4) 37.3 Corporate 0.4 0.1 0.7 0.6 Total $ 1.6 $ 30.8 $ 1.6 $ 37.9 The following table details the Company’s severance and other restructuring accrual activity: (in millions) Severance Pay and Benefits Contract Termination and Other Costs Total Balance at December 31, 2022 $ 0.9 $ 21.8 $ 22.7 Restructuring charges 3.4 (1.8) 1.6 Payments (3.6) (3.1) (6.7) Other, including foreign currency — (0.1) (0.1) Balance at September 30, 2023 $ 0.7 $ 16.8 $ 17.5 The severance and restructuring accruals are recorded in the following line item on the Consolidated Balance Sheets: (in millions) September 30, 2023 December 31, 2022 Other accrued expenses $ 7.3 $ 4.0 Other liabilities 10.2 18.7 Total $ 17.5 $ 22.7

Borrowings (Notes)

Borrowings (Notes)	9 Months Ended
	Sep. 30, 2023
Debt Disclosure [Abstract]
Debt Disclosure	9. Borrowings Revolving Credit Facility Revolving credit facility borrowings consist of the following: (in millions) September 30, 2023 December 31, 2022 Revolving credit facility $ 45.0 $ 45.0 Less current maturities (1) — — Total long-term debt $ 45.0 $ 45.0 (1) There are no required principal payments due until maturity in February 2028. On February 8, 2023, the Company entered into an Amended and Restated Credit Agreement (the "A&R Credit Agreement") that amends and restates the prior Credit Agreement, dated September 4, 2020 (the “2020 Credit Facility”), and provides for a senior secured revolving credit facility with borrowings in an aggregate principal amount at any time outstanding not to exceed $400.0 million (the "Credit Facility"). The A&R Credit Agreement, among other things, extends the maturity date of the Credit Facility from January 2, 2024 to February 8, 2028, replaces the London Inter-Bank Offered Rate (“LIBOR”) with the Term Secured Overnight Financing Rate (“Term SOFR”) as a reference rate available for borrowings, amends the minimum Interest Coverage Ratio, and amends certain other financial covenants with which the Company must comply, as described below. On September 25, 2023, the Company amended its A&R Credit Agreement to, among other things, (a) permit the Company in connection with the acquisition of Cornell Dubilier, to incur senior priority seller financing indebtedness (the “Seller Note”) in an aggregate principal amount of approximately $123.0 million secured by certain assets (including equity interests) acquired in connection with such acquisition and the capital stock of Knowles Intermediate PD Holdings, LLC (“Knowles PD Holdings”) (the “Acquisition Assets”), which shall mature two years after the effective date of such Seller Note (the “Seller Note Maturity Date”), (b) extends the requirement to pledge the Acquisition Assets that would otherwise constitute collateral under the Credit Agreement to the date that is 90 days after the Seller Note Maturity Date, and (c) restricts, until the Seller Note Maturity Date, the amount of dispositions and investments from the Company and certain of its subsidiaries into Knowles PD Holdings and the acquired subsidiaries that constitute Acquisition Assets from exceeding $80.0 million in the aggregate. All other terms remain the same as the A&R Credit Agreement dated February 8, 2023. Up to $100.0 million of the Credit Facility will be available in Euro, Pounds Sterling, and other currencies requested by the Company and up to $50.0 million of the Credit Facility will be made available in the form of letters of credit. Undrawn amounts under the Credit Facility accrue a commitment fee at a per annum rate of 0.225% to 0.350%, based on a leverage ratio grid. At any time during the term of the Credit Facility, the Company will be permitted to increase the commitments under the Credit Facility or to establish one or more incremental term loan facilities under the Credit Facility in an aggregate principal amount not to exceed the sum of $200.0 million, plus additional amounts, so long as the senior secured leverage ratio does not exceed 2.00 to 1.00. The A&R Credit Agreement includes requirements, to be tested quarterly, that the Company maintains (i) a minimum ratio of Consolidated EBITDA to consolidated cash interest expense of 3.00 to 1.00, (the "Interest Coverage Ratio"), (ii) a ratio of total indebtedness, minus netted cash in an aggregate amount not to exceed $50.0 million, to Consolidated EBITDA of 3.75 to 1.00 (the "Total Net Leverage Ratio"), and (iii) a maximum ratio of senior net secured indebtedness to Consolidated EBITDA of 3.25 to 1.00 (the "Senior Secured Net Leverage Ratio"). For these ratios, Consolidated EBITDA and consolidated interest expense are calculated using the most recent four consecutive fiscal quarters in a manner defined in the A&R Credit Agreement. At September 30, 2023, the Company was in compliance with these covenants and it expects to remain in compliance with all of its debt covenants over the next twelve months. The interest rates under the Credit Facility will be, at the Borrowers' option (1) (A) in the case of borrowings denominated in U.S. dollars Term SOFR, (B) in the case of borrowings denominated in Sterling, Daily Simple Sonia, or (C) for borrowings denominated in Euro, EURIBOR, in each case, plus the rates per annum determined from time to time based on the total net leverage ratio of the Company as of the end of and for the most recent period of four fiscal quarters for which financial statements have been delivered (the "Applicable Margin"); or (2) in the case of borrowings denominated in U.S. dollars, alternate base rate ("ABR") (as defined in the A&R Credit Agreement) plus the Applicable Margin. The Applicable Margin for Term SOFR, Daily Simple Sonia, or EURIBOR could range from 1.50% to 2.50% while the Applicable Margin for ABR could range from 0.50% to 1.50%. The weighted-average interest rate on the Company's borrowings under the Credit Facility and the 2020 credit facility was 6.43% and 2.62% for the nine months ended September 30, 2023 and 2022, respectively. The weighted-average commitment fee on the revolving line of credit was 0.23% for the nine months ended September 30, 2023 and 2022. Warrants In the second quarter of 2016, the Company entered into warrant transactions, whereby the Company sold warrants to acquire shares of the Company's common stock at a strike price of $21.1050 per share (the “Warrants”). The Company received aggregate proceeds of $39.1 million from the sale of the Warrants. The Warrants were separate transactions entered into by the Company, and were not part of the Notes, and were accounted for as part of additional paid-in capital. The Warrants expired during the first quarter of 2022, which resulted in the Company delivering 0.2 million shares of its common stock held in treasury. Settlement of the Warrants resulted in a $3.1 million decrease in treasury stock, which was measured based on the acquisition cost of the delivered shares determined on a first-in, first-out (“FIFO”) basis, offset by an equivalent decrease in additional paid-in capital with no net impact to equity.

Other Comprehensive Earnings

Other Comprehensive Earnings	9 Months Ended
	Sep. 30, 2023
Statement of Other Comprehensive Income [Abstract]
Other Comprehensive Earnings	10. Other Comprehensive Earnings The amounts recognized in other comprehensive loss were as follows: Three Months Ended Three Months Ended September 30, 2023 September 30, 2022 (in millions) Pre-tax Tax Net of tax Pre-tax Tax Net of tax Foreign currency translation $ (1.2) $ — $ (1.2) $ (13.1) $ — $ (13.1) Employee benefit plans 0.1 (0.1) — 0.2 (0.4) (0.2) Changes in fair value of cash flow hedges (0.6) 0.2 (0.4) (1.3) — (1.3) Total other comprehensive loss $ (1.7) $ 0.1 $ (1.6) $ (14.2) $ (0.4) $ (14.6) Nine Months Ended Nine Months Ended September 30, 2023 September 30, 2022 (in millions) Pre-tax Tax Net of tax Pre-tax Tax Net of tax Foreign currency translation $ (10.9) $ — $ (10.9) $ (30.9) $ — $ (30.9) Employee benefit plans 0.4 — 0.4 0.5 (0.7) (0.2) Changes in fair value of cash flow hedges (4.7) 0.9 (3.8) (4.1) 0.3 (3.8) Total other comprehensive loss $ (15.2) $ 0.9 $ (14.3) $ (34.5) $ (0.4) $ (34.9) The following tables summarize the changes in balances of each component of accumulated other comprehensive loss, net of tax during the nine months ended September 30, 2023 and 2022: (in millions) Cash flow hedges Employee benefit plans Cumulative foreign currency translation adjustments Total Balance at December 31, 2022 $ 1.0 $ (16.3) $ (106.8) $ (122.1) Other comprehensive (loss) earnings, net of tax (3.8) 0.4 (10.9) (14.3) Balance at September 30, 2023 $ (2.8) $ (15.9) $ (117.7) $ (136.4) (in millions) Cash flow hedges Employee benefit plans Cumulative foreign currency translation adjustments Total Balance at December 31, 2021 $ 0.3 $ (17.1) $ (83.6) $ (100.4) Other comprehensive loss, net of tax (3.8) (0.2) (30.9) (34.9) Balance at September 30, 2022 $ (3.5) $ (17.3) $ (114.5) $ (135.3) The following tables summarize the amounts reclassified from accumulated other comprehensive loss to earnings: Three Months Ended September 30, (in millions) Statement of Earnings Line 2023 2022 Pension and post-retirement benefit plans: Amortization or settlement of actuarial losses and prior service costs Other (income) expense, net $ 0.1 $ 0.2 Tax Provision for (benefit from) income taxes (0.1) (0.4) Net of tax $ — $ (0.2) Cash flow hedges: Net losses reclassified into earnings Cost of goods sold $ 1.0 $ 2.0 Tax Provision for (benefit from) income taxes (0.2) (0.3) Net of tax $ 0.8 $ 1.7 Nine Months Ended September 30, (in millions) Statement of Earnings Line 2023 2022 Pension and post-retirement benefit plans: Amortization or settlement of actuarial losses and prior service costs Other (income) expense, net $ 0.4 $ 0.5 Tax Provision for (benefit from) income taxes — (0.7) Net of tax $ 0.4 $ (0.2) Cash flow hedges: Net losses reclassified into earnings Cost of goods sold $ 1.6 $ 2.7 Tax Provision for (benefit from) income taxes (0.3) (0.4) Net of tax $ 1.3 $ 2.3

Income Taxes (Notes)

Income Taxes (Notes)	9 Months Ended
	Sep. 30, 2023
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	11. Income Taxes Income taxes for the interim periods presented have been included in the accompanying Consolidated Financial Statements on the basis of an estimated annual effective tax rate ("ETR"). The determination of the consolidated provision for income taxes requires management to make certain judgments and estimates. Changes in the estimated level of annual pre-tax earnings or loss, tax laws, and changes resulting from tax audits can affect the overall ETR, which impacts the level of income tax expense or benefit and net income or loss. Judgments and estimates related to the Company’s projections and assumptions are inherently uncertain and therefore, actual results could differ materially from projections. The Company's ETR for the three and nine months ended September 30, 2023 was 22.8% (inclusive of discrete items totaling $0.8 million of benefit) and 28.2% (inclusive of discrete items totaling $0.1 million of benefit), respectively. The discrete items impacting the tax provision for the three and nine months ended September 30, 2023 were primarily attributable to stock-based compensation and the recognition of foreign tax credits resulting from the release of IRS Notice 2023-55. Absent the discrete items, the ETR for the three and nine months ended September 30, 2023 was 26.5% and 28.4%, respectively. The Company's ETR for the three and nine months ended September 30, 2022 was 119.9% and (5.9)% (inclusive of discrete items totaling $1.6 million of benefit), respectively. The discrete items impacting the tax provision for the three and nine months ended September 30, 2022 were primarily attributable to stock-based compensation. Absent the discrete items, the ETR for the three and nine months ended September 30, 2022 was 119.9% and (6.7)%, respectively. The Company's ETR is favorably impacted by tax holidays granted to the Company. The benefit for these incentives for the three and nine months ended September 30, 2023 was approximately $0.7 million and $1.3 million, respectively, or $0.01 on a basic per share basis for both periods. The impact for these incentives for the three and nine months ended September 30, 2022 was approximately $4.0 million expense and $0.9 million benefit, respectively, or $(0.04) and $0.01 on a basic (loss) earnings per share basis. The decrease in the tax holiday benefits is attributable to the Company not satisfying all of the conditions of our tax holiday in Malaysia during the year ended December 31, 2022 due to the rapid decline in demand for global consumer electronics. As a result, our tax holiday benefit in Malaysia ended on December 31, 2022. The Company believes it is reasonably possible that a U.S. valuation allowance of approximately $11.6 million related to foreign tax credits will be released within the next twelve months.

Equity Incentive Program (Notes

Equity Incentive Program (Notes)	3 Months Ended
	Sep. 30, 2023
Share-Based Payment Arrangement, Noncash Expense [Abstract]
Equity Incentive Program	12. Equity Incentive Program The following table summarizes the stock-based compensation expense recognized by the Company for the periods presented: Three Months Ended September 30, Nine Months Ended September 30, (in millions) 2023 2022 2023 2022 Total pre-tax stock-based compensation expense $ 6.9 $ 6.8 $ 21.8 $ 21.6 Tax benefit — 0.1 3.2 4.1 Total stock-based compensation expense, net of tax $ 6.9 $ 6.7 $ 18.6 $ 17.5 Stock Options and SSARs The expense related to stock options granted in the nine months ended September 30, 2022 was estimated on the date of grant using a Black-Scholes option-pricing model based on the assumptions shown in the table below. No stock options were granted during the nine months ended September 30, 2023. Nine Months Ended September 30, 2022 Risk-free interest rate 0.85% Dividend yield —% Expected life (years) 4.5 Volatility 34.3% Fair value at date of grant $6.29 The following table summarizes the Company's stock-settled stock appreciation right ("SSAR") and stock option activity for the nine months ended September 30, 2023: SSARs Stock Options Number of Shares Weighted-Average Exercise Price Aggregate Intrinsic Value Weighted-Average Remaining Contractual Term (Years) Number of Shares Weighted-Average Exercise Price Aggregate Intrinsic Value Weighted-Average Remaining Contractual Term (Years) (in millions, except share and per share amounts) Outstanding at December 31, 2022 223,564 $ 23.92 2,703,424 $ 16.28 Exercised — — (536,771) 12.47 Forfeited — — (12,684) 20.97 Expired (223,564) 23.92 (49,613) 19.49 Outstanding at September 30, 2023 — $ — $ — 0.0 2,104,356 $ 17.15 $ 0.2 2.5 Exercisable at September 30, 2023 — $ — $ — 0.0 1,946,512 $ 16.84 $ 0.2 2.3 There was no unrecognized compensation expense related to SSARs at September 30, 2023. At September 30, 2023, unrecognized compensation expense related to stock options not yet exercisable of $0.6 million is expected to be recognized over a weighted-average period of 1.1 years. RSUs The following table summarizes the Company's restricted stock unit ("RSU") activity for the nine months ended September 30, 2023: Share units Weighted-average grant date fair value Unvested at December 31, 2022 1,880,521 $ 19.96 Granted 1,265,748 18.78 Vested (1) (834,521) 19.54 Forfeited (147,153) 19.90 Unvested at September 30, 2023 2,164,595 $ 19.44 (1) The number of RSUs vested includes shares that the Company withheld on behalf of employees to satisfy statutory tax withholding requirements. At September 30, 2023, $26.1 million of unrecognized compensation expense related to RSUs is expected to be recognized over a weighted-average period of 1.7 years. PSUs The Company grants performance share units (“PSUs”) to senior management. In each case, the awards will cliff vest three years following the grant date. PSUs will be settled in shares of the Company's common stock. Depending on the Company's overall performance relative to the applicable measures, the size of the PSU awards are subject to adjustment, up or down, resulting in awards at the end of the performance period that can range from 0% to 225% of target. The Company will ratably recognize the expense over the applicable service period for each grant of PSUs and adjust the expense for the expected achievement of performance conditions as appropriate. The fair value of PSUs is determined by using a Monte Carlo simulation. For the awards granted in February 2023, 2022, and 2021, the number of PSUs that may be earned and vest is based on total shareholder return (“TSR”) relative to the component companies of the Russell 2000 Index over a three-year performance period. The following table summarizes the Company's PSU activity for the nine months ended September 30, 2023: Share units Weighted-average grant date fair value Unvested at December 31, 2022 833,589 $ 25.12 Granted 320,585 29.75 Vested (1) (261,770) 16.14 Forfeited (37,125) 29.20 Unvested at September 30, 2023 855,279 $ 29.42 (1) The number of PSUs vested includes shares that the Company withheld on behalf of employees to satisfy statutory tax withholding requirements. At September 30, 2023, $12.0 million of unrecognized compensation expense related to PSUs is expected to be recognized over a weighted-average period of 1.4 years.

Earnings per Share (Notes)

Earnings per Share (Notes)	9 Months Ended
	Sep. 30, 2023
Earnings Per Share [Abstract]
Earnings per Share	13. Earnings per Share Basic and diluted earnings per share were computed as follows: Three Months Ended September 30, Nine Months Ended September 30, (in millions, except per share amounts) 2023 2022 2023 2022 Net earnings (loss) $ 16.6 $ 2.7 $ 25.0 $ (222.1) Basic: Net earnings (loss) per share $ 0.18 $ 0.03 $ 0.27 $ (2.42) Weighted-average shares outstanding 90.8 91.4 91.2 91.9 Diluted: Net earnings (loss) per share $ 0.18 $ 0.03 $ 0.27 $ (2.42) Weighted-average shares outstanding 91.4 92.0 91.9 91.9 For the three and nine months ended September 30, 2023, the weighted-average number of anti-dilutive potential common shares for stock-based awards excluded from the diluted earnings per share calculation above was 1.7 million and 2.4 million, respectively. For the three and nine months ended September 30, 2022, the weighted-average number of anti-dilutive potential common shares for stock-based awards excluded from the diluted earnings per share calculation above was 3.2 million and 3.0 million, respectively.

Commitments and Contingent Liab

Commitments and Contingent Liabilities (Notes)	9 Months Ended
	Sep. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	14. Commitments and Contingent Liabilities From time to time, the Company is involved in various legal proceedings and claims arising in the ordinary course of its business. The majority of these claims and proceedings relate to commercial, warranty, employment, and intellectual property matters. Although the ultimate outcome of any legal proceeding or claim cannot be predicted with certainty, based on present information, including management’s assessment of the merits of the particular claim, the Company believes that the disposition of these legal proceedings or claims, individually or in the aggregate, after taking into account recorded accruals and the availability and limits of insurance coverage, will not have a material adverse effect on its cash flow, results of operations, or financial condition. The Company owns many patents and other intellectual property pertaining to its products, technology, and manufacturing processes. Some of the Company's patents have been and may continue to be infringed upon or challenged by others. In appropriate cases, the Company has taken and will take steps to protect and defend its patents and other intellectual property, including through the use of legal proceedings in various jurisdictions around the world. Such steps have resulted in and may continue to result in retaliatory legal proceedings, including litigation or other legal proceedings in various jurisdictions and forums around the world alleging infringement by the Company of patents owned by others. The costs of investigations and legal proceedings relating to the enforcement and defense of the Company’s intellectual property may be substantial. Additionally, in multi-forum disputes, the Company may incur adverse judgments with regard to certain claims in certain jurisdictions and forums while still contesting other related claims against the same opposing party in other jurisdictions and forums. Intellectual Property Infringement Claims The Company may, on a limited customer specific basis, provide contractual indemnities for certain losses that arise out of claims that its products infringe on the intellectual property of others. It is not possible to determine the maximum potential amount under these indemnification agreements due to the unique facts and circumstances involved in each particular agreement. Historically, the Company has not made significant payments under such indemnity arrangements. The Company’s legal accruals associated with these indemnity arrangements were not significant at September 30, 2023 and December 31, 2022.

Segment Information (Notes)

Segment Information (Notes)	9 Months Ended
	Sep. 30, 2023
Segment Reporting [Abstract]
Segment Information	15. Segment Information The Company's three reportable segments are Precision Devices, MedTech & Specialty Audio, and Consumer MEMS Microphones. Information regarding the Company’s reportable segments is as follows (certain prior year information has been reclassified to conform to the current year presentation) : Three Months Ended September 30, Nine Months Ended September 30, (in millions) 2023 2022 2023 2022 Revenues: Precision Devices $ 50.2 $ 64.4 $ 151.7 $ 179.6 MedTech & Specialty Audio 56.5 47.0 162.6 168.1 Consumer MEMS Microphones 68.4 66.8 178.1 219.9 Total revenues $ 175.1 $ 178.2 $ 492.4 $ 567.6 Earnings (loss) before interest and income taxes: Precision Devices $ 6.1 $ 16.2 $ 21.6 $ 39.5 MedTech & Specialty Audio 22.2 15.4 57.2 60.2 Consumer MEMS Microphones 11.1 (32.3) 9.2 (271.1) Total segments 39.4 (0.7) 88.0 (171.4) Corporate expense / other 17.3 11.8 51.0 35.6 Interest expense, net 0.6 1.1 2.2 2.7 Earnings (loss) before income taxes 21.5 (13.6) 34.8 (209.7) Provision for (benefit from) income taxes 4.9 (16.3) 9.8 12.4 Net earnings (loss) $ 16.6 $ 2.7 $ 25.0 $ (222.1) Information regarding assets of the Company's reportable segments: Total Assets (in millions) September 30, 2023 December 31, 2022 Precision Devices $ 292.1 $ 275.7 MedTech & Specialty Audio 350.2 358.1 Consumer MEMS Microphones 536.3 547.3 Corporate / eliminations 3.6 2.8 Total $ 1,182.2 $ 1,183.9 The following table details revenues by geographic location. Revenues are attributed to regions based on the location of the Company's direct customer, which in some instances is an intermediary and not necessarily the end user. The Company's businesses are based primarily in Asia, North America, and Europe. Three Months Ended September 30, Nine Months Ended September 30, (in millions) 2023 2022 2023 2022 Asia $ 109.6 $ 105.3 $ 298.5 $ 347.2 United States 36.1 43.7 105.4 129.3 Europe 25.1 24.5 74.9 80.2 Other Americas 1.1 2.9 4.5 5.5 Other 3.2 1.8 9.1 5.4 Total $ 175.1 $ 178.2 $ 492.4 $ 567.6 Receivables, net from contracts with customers were $112.4 million and $125.7 million as of September 30, 2023 and December 31, 2022, respectively. As of September 30, 2023 and December 31, 2022, our total remaining performance obligations were immaterial.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Pay vs Performance Disclosure
Net earnings (loss)	$ 16.6	$ 2.7	$ 25	$ (222.1)

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Sep. 30, 2023
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false

Recent Accounting Standards New

Recent Accounting Standards New Accounting Pronouncements, Policy (Policies)	9 Months Ended
	Sep. 30, 2023
Accounting Policies [Abstract]
New Accounting Pronouncements, Policy [Policy Text Block]	There are no recently issued or adopted accounting standards that impact the Consolidated Financial Statements of the Company as of September 30, 2023.

Inventories (Tables)

Inventories (Tables)	9 Months Ended
	Sep. 30, 2023
Inventory, Net [Abstract]
Components of Inventory	The following table details the major components of inventories, net: (in millions) September 30, 2023 December 31, 2022 Raw materials $ 129.2 $ 116.1 Work in progress 34.3 28.3 Finished goods 63.6 62.8 Subtotal 227.1 207.2 Less reserves (43.0) (37.7) Total $ 184.1 $ 169.5

Property, Plant, and Equipmen_2

Property, Plant, and Equipment, net (Tables)	9 Months Ended
	Sep. 30, 2023
Property, Plant and Equipment [Abstract]
Components of property, plant and equipment, net	The following table details the major components of property, plant, and equipment, net: (in millions) September 30, 2023 December 31, 2022 Land $ 12.4 $ 12.5 Buildings and improvements 112.5 114.6 Machinery, equipment, and other 488.5 531.2 Subtotal 613.4 658.3 Less accumulated depreciation (468.8) (496.5) Total $ 144.6 $ 161.8

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	There were no changes in the carrying value of goodwill by reportable segment for the nine months ended September 30, 2023.
Schedule of Intangible Assets	The gross carrying value and accumulated amortization for each major class of intangible assets are as follows: September 30, 2023 December 31, 2022 (in millions) Gross Carrying Accumulated Gross Carrying Accumulated Amortized intangible assets: Trademarks $ 2.0 $ 1.0 $ 2.0 $ 0.8 Customer relationships 38.4 13.6 36.4 10.3 Developed technology 45.4 25.3 45.4 20.1 Other 2.4 2.0 2.4 1.9 Total 88.2 41.9 86.2 33.1 Unamortized intangible assets: Trademarks 32.0 32.0 Total intangible assets, net $ 78.3 $ 85.1
Schedule of Future Amortization Expense	Amortization expense for the next five years, based on current definite-lived intangible balances, is estimated to be as follows: (in millions) Q4 2023 $ 3.0 2024 11.9 2025 11.5 2026 5.6 2027 5.6 2028 and thereafter 8.7 Total $ 46.3

Restructuring and Related Act_2

Restructuring and Related Activities (Tables)	9 Months Ended
	Sep. 30, 2023
Restructuring and Related Activities [Abstract]
Schedule of Restructuring and Related Costs	The following table details restructuring charges incurred by reportable segment for the periods presented: Three Months Ended September 30, Nine Months Ended September 30, (in millions) 2023 2022 2023 2022 Precision Devices $ 1.3 $ — $ 1.3 $ — Consumer MEMS Microphones (0.1) 30.7 (0.4) 37.3 Corporate 0.4 0.1 0.7 0.6 Total $ 1.6 $ 30.8 $ 1.6 $ 37.9
Schedule of Restructuring Reserve by Type of Cost	The following table details the Company’s severance and other restructuring accrual activity: (in millions) Severance Pay and Benefits Contract Termination and Other Costs Total Balance at December 31, 2022 $ 0.9 $ 21.8 $ 22.7 Restructuring charges 3.4 (1.8) 1.6 Payments (3.6) (3.1) (6.7) Other, including foreign currency — (0.1) (0.1) Balance at September 30, 2023 $ 0.7 $ 16.8 $ 17.5
Schedule of Restructuring Reserve by Balance Sheet Location	The severance and restructuring accruals are recorded in the following line item on the Consolidated Balance Sheets: (in millions) September 30, 2023 December 31, 2022 Other accrued expenses $ 7.3 $ 4.0 Other liabilities 10.2 18.7 Total $ 17.5 $ 22.7

Borrowings (Tables)

Borrowings (Tables)	9 Months Ended
	Sep. 30, 2023
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments	Revolving credit facility borrowings consist of the following: (in millions) September 30, 2023 December 31, 2022 Revolving credit facility $ 45.0 $ 45.0 Less current maturities (1) — — Total long-term debt $ 45.0 $ 45.0

Other Comprehensive Loss (Table

Other Comprehensive Loss (Tables)	9 Months Ended
	Sep. 30, 2023
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Components of other comprehensive (loss) earnings	The amounts recognized in other comprehensive loss were as follows: Three Months Ended Three Months Ended September 30, 2023 September 30, 2022 (in millions) Pre-tax Tax Net of tax Pre-tax Tax Net of tax Foreign currency translation $ (1.2) $ — $ (1.2) $ (13.1) $ — $ (13.1) Employee benefit plans 0.1 (0.1) — 0.2 (0.4) (0.2) Changes in fair value of cash flow hedges (0.6) 0.2 (0.4) (1.3) — (1.3) Total other comprehensive loss $ (1.7) $ 0.1 $ (1.6) $ (14.2) $ (0.4) $ (14.6) Nine Months Ended Nine Months Ended September 30, 2023 September 30, 2022 (in millions) Pre-tax Tax Net of tax Pre-tax Tax Net of tax Foreign currency translation $ (10.9) $ — $ (10.9) $ (30.9) $ — $ (30.9) Employee benefit plans 0.4 — 0.4 0.5 (0.7) (0.2) Changes in fair value of cash flow hedges (4.7) 0.9 (3.8) (4.1) 0.3 (3.8) Total other comprehensive loss $ (15.2) $ 0.9 $ (14.3) $ (34.5) $ (0.4) $ (34.9)
Schedule of (Loss) Earnings	The following tables summarize the changes in balances of each component of accumulated other comprehensive loss, net of tax during the nine months ended September 30, 2023 and 2022: (in millions) Cash flow hedges Employee benefit plans Cumulative foreign currency translation adjustments Total Balance at December 31, 2022 $ 1.0 $ (16.3) $ (106.8) $ (122.1) Other comprehensive (loss) earnings, net of tax (3.8) 0.4 (10.9) (14.3) Balance at September 30, 2023 $ (2.8) $ (15.9) $ (117.7) $ (136.4) (in millions) Cash flow hedges Employee benefit plans Cumulative foreign currency translation adjustments Total Balance at December 31, 2021 $ 0.3 $ (17.1) $ (83.6) $ (100.4) Other comprehensive loss, net of tax (3.8) (0.2) (30.9) (34.9) Balance at September 30, 2022 $ (3.5) $ (17.3) $ (114.5) $ (135.3) The following tables summarize the amounts reclassified from accumulated other comprehensive loss to earnings: Three Months Ended September 30, (in millions) Statement of Earnings Line 2023 2022 Pension and post-retirement benefit plans: Amortization or settlement of actuarial losses and prior service costs Other (income) expense, net $ 0.1 $ 0.2 Tax Provision for (benefit from) income taxes (0.1) (0.4) Net of tax $ — $ (0.2) Cash flow hedges: Net losses reclassified into earnings Cost of goods sold $ 1.0 $ 2.0 Tax Provision for (benefit from) income taxes (0.2) (0.3) Net of tax $ 0.8 $ 1.7 Nine Months Ended September 30, (in millions) Statement of Earnings Line 2023 2022 Pension and post-retirement benefit plans: Amortization or settlement of actuarial losses and prior service costs Other (income) expense, net $ 0.4 $ 0.5 Tax Provision for (benefit from) income taxes — (0.7) Net of tax $ 0.4 $ (0.2) Cash flow hedges: Net losses reclassified into earnings Cost of goods sold $ 1.6 $ 2.7 Tax Provision for (benefit from) income taxes (0.3) (0.4) Net of tax $ 1.3 $ 2.3

Equity Incentive Program (Table

Equity Incentive Program (Tables)	9 Months Ended
	Sep. 30, 2023
Share-Based Payment Arrangement, Noncash Expense [Abstract]
Schedule of Share-Based Compensation, Employee Stock Purchase Plan, Activity	The following table summarizes the stock-based compensation expense recognized by the Company for the periods presented: Three Months Ended September 30, Nine Months Ended September 30, (in millions) 2023 2022 2023 2022 Total pre-tax stock-based compensation expense $ 6.9 $ 6.8 $ 21.8 $ 21.6 Tax benefit — 0.1 3.2 4.1 Total stock-based compensation expense, net of tax $ 6.9 $ 6.7 $ 18.6 $ 17.5
Schedule of Black-Scholes Option-Pricing Assumptions	The expense related to stock options granted in the nine months ended September 30, 2022 was estimated on the date of grant using a Black-Scholes option-pricing model based on the assumptions shown in the table below. No stock options were granted during the nine months ended September 30, 2023. Nine Months Ended September 30, 2022 Risk-free interest rate 0.85% Dividend yield —% Expected life (years) 4.5 Volatility 34.3% Fair value at date of grant $6.29
Schedule of SSAR and Stock Options Activity	The following table summarizes the Company's stock-settled stock appreciation right ("SSAR") and stock option activity for the nine months ended September 30, 2023: SSARs Stock Options Number of Shares Weighted-Average Exercise Price Aggregate Intrinsic Value Weighted-Average Remaining Contractual Term (Years) Number of Shares Weighted-Average Exercise Price Aggregate Intrinsic Value Weighted-Average Remaining Contractual Term (Years) (in millions, except share and per share amounts) Outstanding at December 31, 2022 223,564 $ 23.92 2,703,424 $ 16.28 Exercised — — (536,771) 12.47 Forfeited — — (12,684) 20.97 Expired (223,564) 23.92 (49,613) 19.49 Outstanding at September 30, 2023 — $ — $ — 0.0 2,104,356 $ 17.15 $ 0.2 2.5 Exercisable at September 30, 2023 — $ — $ — 0.0 1,946,512 $ 16.84 $ 0.2 2.3
Schedule of Restricted Stock Units Award Activity	The following table summarizes the Company's restricted stock unit ("RSU") activity for the nine months ended September 30, 2023: Share units Weighted-average grant date fair value Unvested at December 31, 2022 1,880,521 $ 19.96 Granted 1,265,748 18.78 Vested (1) (834,521) 19.54 Forfeited (147,153) 19.90 Unvested at September 30, 2023 2,164,595 $ 19.44 (1) The number of RSUs vested includes shares that the Company withheld on behalf of employees to satisfy statutory tax withholding requirements.
Share-based Payment Arrangement, Performance Shares, Outstanding Activity	The following table summarizes the Company's PSU activity for the nine months ended September 30, 2023: Share units Weighted-average grant date fair value Unvested at December 31, 2022 833,589 $ 25.12 Granted 320,585 29.75 Vested (1) (261,770) 16.14 Forfeited (37,125) 29.20 Unvested at September 30, 2023 855,279 $ 29.42 (1) The number of PSUs vested includes shares that the Company withheld on behalf of employees to satisfy statutory tax withholding requirements.

Earnings per Share (Tables)

Earnings per Share (Tables)	9 Months Ended
	Sep. 30, 2023
Earnings Per Share [Abstract]
Reconciliation of information used in computing basic and diluted earnings per share	Basic and diluted earnings per share were computed as follows: Three Months Ended September 30, Nine Months Ended September 30, (in millions, except per share amounts) 2023 2022 2023 2022 Net earnings (loss) $ 16.6 $ 2.7 $ 25.0 $ (222.1) Basic: Net earnings (loss) per share $ 0.18 $ 0.03 $ 0.27 $ (2.42) Weighted-average shares outstanding 90.8 91.4 91.2 91.9 Diluted: Net earnings (loss) per share $ 0.18 $ 0.03 $ 0.27 $ (2.42) Weighted-average shares outstanding 91.4 92.0 91.9 91.9

Segment Information (Tables)

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2023
Segment Reporting [Abstract]
Revenue and Earnings from continuing operations by market segment	Three Months Ended September 30, Nine Months Ended September 30, (in millions) 2023 2022 2023 2022 Revenues: Precision Devices $ 50.2 $ 64.4 $ 151.7 $ 179.6 MedTech & Specialty Audio 56.5 47.0 162.6 168.1 Consumer MEMS Microphones 68.4 66.8 178.1 219.9 Total revenues $ 175.1 $ 178.2 $ 492.4 $ 567.6 Earnings (loss) before interest and income taxes: Precision Devices $ 6.1 $ 16.2 $ 21.6 $ 39.5 MedTech & Specialty Audio 22.2 15.4 57.2 60.2 Consumer MEMS Microphones 11.1 (32.3) 9.2 (271.1) Total segments 39.4 (0.7) 88.0 (171.4) Corporate expense / other 17.3 11.8 51.0 35.6 Interest expense, net 0.6 1.1 2.2 2.7 Earnings (loss) before income taxes 21.5 (13.6) 34.8 (209.7) Provision for (benefit from) income taxes 4.9 (16.3) 9.8 12.4 Net earnings (loss) $ 16.6 $ 2.7 $ 25.0 $ (222.1)
Reconciliation of Assets from Segment to Consolidated	Information regarding assets of the Company's reportable segments: Total Assets (in millions) September 30, 2023 December 31, 2022 Precision Devices $ 292.1 $ 275.7 MedTech & Specialty Audio 350.2 358.1 Consumer MEMS Microphones 536.3 547.3 Corporate / eliminations 3.6 2.8 Total $ 1,182.2 $ 1,183.9
Revenue from External Customers by Geographic Areas	The following table details revenues by geographic location. Revenues are attributed to regions based on the location of the Company's direct customer, which in some instances is an intermediary and not necessarily the end user. The Company's businesses are based primarily in Asia, North America, and Europe. Three Months Ended September 30, Nine Months Ended September 30, (in millions) 2023 2022 2023 2022 Asia $ 109.6 $ 105.3 $ 298.5 $ 347.2 United States 36.1 43.7 105.4 129.3 Europe 25.1 24.5 74.9 80.2 Other Americas 1.1 2.9 4.5 5.5 Other 3.2 1.8 9.1 5.4 Total $ 175.1 $ 178.2 $ 492.4 $ 567.6

Basis of Presentation (Details)

Basis of Presentation (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023	Sep. 30, 2022	Apr. 28, 2022	Feb. 24, 2020
Noncash Investing and Financing Items
Purchases of property and equipment included in accounts payable	$ 1.6	$ 1.6
Stock Repurchase Program, Authorized Amount					$ 100
Share Repurchase Program, Authorized Amount, Increase (Decrease)				$ 150
Payments for Repurchase of Common Stock		27.5	$ 44
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability		2.5	$ 1.9
Asset Acquisition, Contingent Consideration, Liability, Noncurrent	$ 1.7	$ 1.7

Business Combinations (Details)

Business Combinations (Details) - USD ($) $ in Millions			3 Months Ended
	Nov. 01, 2023	May 03, 2021	Jun. 30, 2022
Integrated Microwave Corporation
Business Combination Segment Allocation [Line Items]
Payments to Acquire Businesses, Gross		$ 81.4
Integrated Microwave Corporation | Precision Devices
Business Combination Segment Allocation [Line Items]
Goodwill, Purchase Accounting Adjustments			$ 0.7
Cornell Dubilier | Precision Devices | Subsequent Event
Business Combination Segment Allocation [Line Items]
Payments to Acquire Businesses, Gross	$ 140
Business Combination, Price of Acquisition, Expected	$ 263

Impairment Charges (Details)

Impairment Charges (Details) - USD ($) $ in Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Unusual or Infrequent Items, or Both [Abstract]
Asset Impairment Charges	$ 0	$ 231.1	$ 0	$ 239.8	$ 0	$ 239.8

Inventories (Details)

Inventories (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Inventory, Net [Abstract]
Raw materials	$ 129.2	$ 116.1
Work in progress	34.3	28.3
Finished goods	63.6	62.8
Subtotal	227.1	207.2
Less reserves	(43)	(37.7)
Total	$ 184.1	$ 169.5

Property, Plant and Equipment,

Property, Plant and Equipment, net (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Property, Plant and Equipment
Cost	$ 613.4		$ 613.4		$ 658.3
Less accumulated depreciation	(468.8)		(468.8)		(496.5)
Total	144.6		144.6		161.8
Depreciation	7.6	$ 9.8	25	$ 32.5
Proceeds from Sale of Property, Plant, and Equipment			12.4	0
Gain (Loss) on Disposition of Assets	(5.2)	$ 0	(10)	$ 0
Proceeds from the sale of fixed assets, fair value of control transferred [Line Items]	5.5		11.2
Gain on sale of fixed assets
Property, Plant and Equipment
Gain (Loss) on Disposition of Assets	(5.2)		(10)
Cost of Goods Sold, Restructuring Charges
Property, Plant and Equipment
Gain (Loss) on Disposition of Assets	(0.1)		(1)
Consumer MEMS Microphones
Property, Plant and Equipment
Proceeds from Sale of Property, Plant, and Equipment	11.4
Gain (Loss) on Disposition of Assets	(5.3)		(11)
Deferred Revenue	0.2		0.2
Consumer MEMS Microphones | Cost of Goods Sold, Restructuring Charges
Property, Plant and Equipment
Gain (Loss) on Disposition of Assets	(0.1)		1
Land
Property, Plant and Equipment
Cost	12.4		12.4		12.5
Buildings and improvements
Property, Plant and Equipment
Cost	112.5		112.5		114.6
Machinery, equipment, and other
Property, Plant and Equipment
Cost	$ 488.5		$ 488.5		$ 531.2

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Goodwill (Details) - USD ($) $ in Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Goodwill [Roll Forward]
Goodwill, Other Increase (Decrease)					$ 0
Asset Impairment Charges	$ 0	$ 231.1	$ 0	$ 239.8	$ 0	$ 239.8

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Intangible Assets and Amortization Expense (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Finite-Lived Intangible Assets
Gross carrying amount	$ 88.2		$ 88.2		$ 86.2
Accumulated amortization	41.9		41.9		33.1
Intangible assets, net	78.3		78.3		85.1
Amortization expense	3	$ 3.1	8.8	$ 9.2
2023	3		3
2024	11.9		11.9
2025	11.5		11.5
2026	5.6		5.6
2027	5.6		5.6
Finite-Lived Intangible Asset, Expected Amortization, after Year Five	8.7		8.7
Finite-Lived Intangible Assets, Net	46.3		46.3
Finite-Lived Customer Relationships, Gross	2		2
Trademarks
Finite-Lived Intangible Assets
Unamortized intangible assets, gross carrying amount	32		32		32
Trademarks
Finite-Lived Intangible Assets
Gross carrying amount	2		2		2
Accumulated amortization	1		1		0.8
Customer relationships
Finite-Lived Intangible Assets
Gross carrying amount	38.4		38.4		36.4
Accumulated amortization	13.6		13.6		10.3
Unpatented Technology [Member]
Finite-Lived Intangible Assets
Gross carrying amount	45.4		45.4		45.4
Accumulated amortization	25.3		25.3		20.1
Other
Finite-Lived Intangible Assets
Gross carrying amount	2.4		2.4		2.4
Accumulated amortization	$ 2		$ 2		$ 1.9

Restructuring and Related Act_3

Restructuring and Related Activities - Restructuring Charges by Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Restructuring Cost and Reserve
Restructuring charges	$ 1.5	$ 2.7	$ 3.1	$ 9.8
Restructuring and Related Cost, Incurred Cost			1.6
Gain (Loss) on Disposition of Assets	5.2	0	10	0
Severance Pay and Contract Termination and Other Costs
Restructuring Cost and Reserve
Restructuring charges	1.6	30.8	1.6	37.9
Severance Pay and Benefits
Restructuring Cost and Reserve
Restructuring and Related Cost, Incurred Cost			3.4
Contract Termination and Other Costs
Restructuring Cost and Reserve
Restructuring and Related Cost, Incurred Cost			(1.8)
Consumer MEMS Microphones
Restructuring Cost and Reserve
Gain (Loss) on Disposition of Assets	5.3		11
Consumer MEMS Microphones | MEMS Microphones product line
Restructuring Cost and Reserve
Restructuring charges				35.1
Operating Segments | Precision Devices
Restructuring Cost and Reserve
Restructuring charges	1.3	0	1.3	0
Operating Segments | Consumer MEMS Microphones
Restructuring Cost and Reserve
Restructuring charges	(0.1)	30.7	(0.4)	37.3
Corporate, Non-Segment [Member]
Restructuring Cost and Reserve
Restructuring charges			0.7	0.6
Corporate, Non-Segment [Member] | Corporate, Non-Segment [Member]
Restructuring Cost and Reserve
Restructuring charges	0.4	0.1
Cost of Goods Sold, Restructuring Charges
Restructuring Cost and Reserve
Gain (Loss) on Disposition of Assets	0.1		1
Cost of Goods Sold, Restructuring Charges | Severance Pay and Contract Termination and Other Costs
Restructuring Cost and Reserve
Restructuring charges	0.1	28.1	(1.5)
Cost of Goods Sold, Restructuring Charges | Consumer MEMS Microphones
Restructuring Cost and Reserve
Gain (Loss) on Disposition of Assets	0.1		(1)
Cost of Goods Sold, Restructuring Charges | Consumer MEMS Microphones | Contract Termination [Member]
Restructuring Cost and Reserve
Restructuring charges			(0.8)
Operating Expense | Severance Pay and Contract Termination and Other Costs
Restructuring Cost and Reserve
Restructuring charges	1.5	$ 2.7	3.1	9.8
Restructuring Charges | Severance Pay and Benefits | Consumer MEMS Microphones
Restructuring Cost and Reserve
Restructuring charges			1.4
Restructuring Charges | Precision Devices | Severance Pay and Benefits
Restructuring Cost and Reserve
Restructuring charges	1.3		1.3
Restructuring Charges | Consumer MEMS Microphones | Severance Pay and Benefits | Intelligent Audio [Member]
Restructuring Cost and Reserve
Restructuring charges				2.2
Restructuring Charges | Consumer MEMS Microphones | Severance Pay and Benefits | MEMS Microphones product line
Restructuring Cost and Reserve
Restructuring charges				4.3
Restructuring Charges | Consumer MEMS Microphones | Contract Termination [Member] | MEMS Microphones product line
Restructuring Cost and Reserve
Restructuring charges				21.9
Restructuring Charges | Consumer MEMS Microphones | Other Restructuring | MEMS Microphones product line
Restructuring Cost and Reserve
Restructuring charges				8.9
Restructuring Charges | Corporate, Non-Segment [Member] | Other Restructuring
Restructuring Cost and Reserve
Restructuring charges	$ 0.4		$ 0.7	$ 0.6

Restructuring and Related Act_4

Restructuring and Related Activities - Restructuring Accrual Activities (Details) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($)
Restructuring Reserve [Roll Forward]
Severance and other restructuring reserve, beginning balance	$ 22.7
Restructuring charges	1.6
Payments	(6.7)
Restructuring Reserve, Accrual Adjustment	(0.1)
Severance and other restructuring reserve, ending balance	17.5
Severance Pay and Benefits
Restructuring Reserve [Roll Forward]
Severance and other restructuring reserve, beginning balance	0.9
Restructuring charges	3.4
Payments	(3.6)
Restructuring Reserve, Accrual Adjustment	0
Severance and other restructuring reserve, ending balance	0.7
Contract Termination and Other Costs
Restructuring Reserve [Roll Forward]
Severance and other restructuring reserve, beginning balance	21.8
Restructuring charges	(1.8)
Payments	(3.1)
Restructuring Reserve, Accrual Adjustment	(0.1)
Severance and other restructuring reserve, ending balance	$ 16.8

Restructuring and Related Act_5

Restructuring and Related Activities - Balance Sheet Location (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Restructuring Cost and Reserve
Severance and restructuring accrual	$ 17.5	$ 22.7
Other accrued expenses
Restructuring Cost and Reserve
Severance and restructuring accrual	7.3	4
Other liabilities
Restructuring Cost and Reserve
Severance and restructuring accrual	$ 10.2	$ 18.7

Hedging Transaction and Derivat

Hedging Transaction and Derivative Instruments - Gain (Loss) of Derivative Instruments Recognized on Income Statement (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Derivative
Cost of goods sold	$ 102.7	$ 110.1	$ 298.9	$ 338.5
Other expense (income), net	$ 0.5	$ 2.1	$ (0.5)	$ 0.9

Borrowings (Details)

Borrowings (Details) - USD ($)	3 Months Ended	9 Months Ended
	Jun. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Sep. 25, 2023	Dec. 31, 2022
Long-term borrowings
Long-term Line of Credit		$ 45,000,000
Less: current maturities		45,000,000			$ 45,000,000
Long-term portion		45,000,000			45,000,000
Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year		0
Long-term Debt, Maturities, Repayments of Principal in Year Two		0
Long-term Debt, Maturities, Repayments of Principal in Year Three		45,000,000
Long-term Debt, Maturities, Repayments of Principal in Year Four		0
Long-term Debt, Maturities, Repayments of Principal in Year Five		$ 0
Debt instrument, Convenant, Senior Secured Leverage Ratio Under Accordion Feature, Maximum		2
Debt Instrument, Covenant, EBITDA to Interest Ratio, Minimum		3
Debt Instrument, Covenant, Debt to EBITDA, Maximum		3.75
Debt Instrument, Covenant, Senior Secured Leverage Ratio, Maximum		3.25
Shares Issued During Period, Value, Exercise of Warrants			$ 0
Treasury Stock, Common
Long-term borrowings
Shares Issued During Period, Value, Exercise of Warrants	$ 3,100,000		$ 3,100,000
Credit Facility due February 8, 2028
Long-term borrowings
Line of Credit Facility, Maximum Borrowing Capacity		$ 400,000,000
Line of Credit Facility, Accordion Feature, Increase Limit		$ 200,000,000
Credit Facility due February 8, 2028 | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Long-term borrowings
Long-term Debt, Weighted Average Interest Rate, at Point in Time		6.43%
Credit Facility due February 8, 2028 | Minimum [Member]
Long-term borrowings
Line of Credit Facility, Commitment Fee Percentage		0.225%
Credit Facility due February 8, 2028 | Minimum [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Long-term borrowings
Debt Instrument, Basis Spread on Variable Rate		1.50%
Credit Facility due February 8, 2028 | Maximum [Member]
Long-term borrowings
Line of Credit Facility, Commitment Fee Percentage		0.35%
Credit Facility due February 8, 2028 | Maximum [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Long-term borrowings
Debt Instrument, Basis Spread on Variable Rate		2.50%
Credit Facility due February 8, 2028 | Euro Member Countries, Euro
Long-term borrowings
Line of Credit Facility, Maximum Borrowing Capacity		$ 100,000,000
September 25, 2023 Credit Facility Amendment
Long-term borrowings
Line of Credit Facility, Maximum Borrowing Capacity		$ 80,000,000
Secured Long-Term Debt, Noncurrent				$ 123,000,000
Line of Credit | Weighted Average
Long-term borrowings
Line of Credit Facility, Commitment Fee Percentage		0.23%	0.23%
Line of Credit | Credit Facility due January 2, 2024 [Member]
Long-term borrowings
Long-term Line of Credit		$ 45,000,000			45,000,000
Line of Credit, Current		0			$ 0
Letter of Credit | Credit Facility due February 8, 2028
Long-term borrowings
Line of Credit Facility, Maximum Borrowing Capacity		$ 50,000,000

Borrowings Convertible Debt (De

Borrowings Convertible Debt (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2018	Sep. 30, 2022	May 04, 2016
Schedule of Convertible Debt
Shares Issued During Period, Value, Exercise of Warrants			$ 0
Treasury Stock, Common
Schedule of Convertible Debt
Shares Issued During Period, Shares, Exercise of Warrants	200,000		203,615
Shares Issued During Period, Value, Exercise of Warrants	$ (3.1)		$ (3.1)
Convertible Debt | Convertible Notes Due Twenty Twenty One
Schedule of Convertible Debt
Class of Warrant or Right, Exercise Price of Warrants or Rights				$ 21.1050
Proceeds from issuance of warrants		$ 39.1

Borrowings Schedule of Revolvin

Borrowings Schedule of Revolving Credit Facility (Details) - USD ($)	3 Months Ended	9 Months Ended
	Jun. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Schedule of Term Loan and Revolving Credit Facilities [Line Items]
Long-term Line of Credit		$ 45,000,000
Debt Instrument, Covenant, EBITDA to Interest Ratio, Minimum		3
Debt Instrument, Covenant, Debt to EBITDA, Maximum		3.75
Debt Instrument, Covenant, Senior Secured Leverage Ratio, Maximum		3.25
Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year		$ 0
Long-term Debt, Maturities, Repayments of Principal in Year Two		0
Long-term Debt, Maturities, Repayments of Principal in Year Four		0
Long-term Debt, Maturities, Repayments of Principal in Year Five		$ 0
Shares Issued During Period, Value, Exercise of Warrants			$ 0
Treasury Stock, Common
Schedule of Term Loan and Revolving Credit Facilities [Line Items]
Shares Issued During Period, Value, Exercise of Warrants	$ (3,100,000)		$ (3,100,000)
Line of Credit | Weighted Average
Schedule of Term Loan and Revolving Credit Facilities [Line Items]
Line of Credit Facility, Commitment Fee Percentage		0.23%	0.23%
Credit Facility due January 2, 2024 [Member] | London Interbank Offered Rate LIBOR prior to 2023
Schedule of Term Loan and Revolving Credit Facilities [Line Items]
Long-term Debt, Weighted Average Interest Rate, at Point in Time			2.62%
Credit Facility due January 2, 2024 [Member] | Line of Credit
Schedule of Term Loan and Revolving Credit Facilities [Line Items]
Long-term Line of Credit		$ 45,000,000		$ 45,000,000
Credit Facility due February 8, 2028
Schedule of Term Loan and Revolving Credit Facilities [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 400,000,000
Credit Facility due February 8, 2028 | Minimum [Member]
Schedule of Term Loan and Revolving Credit Facilities [Line Items]
Line of Credit Facility, Commitment Fee Percentage		0.225%
Credit Facility due February 8, 2028 | Minimum [Member] | Applicable margin alternate base rate [Member]
Schedule of Term Loan and Revolving Credit Facilities [Line Items]
Debt Instrument, Basis Spread on Variable Rate		0.50%
Credit Facility due February 8, 2028 | Maximum [Member]
Schedule of Term Loan and Revolving Credit Facilities [Line Items]
Line of Credit Facility, Commitment Fee Percentage		0.35%
Credit Facility due February 8, 2028 | Maximum [Member] | Applicable margin alternate base rate [Member]
Schedule of Term Loan and Revolving Credit Facilities [Line Items]
Debt Instrument, Basis Spread on Variable Rate		1.50%

Other Comprehensive Loss - OCI

Other Comprehensive Loss - OCI (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Foreign currency translation adjustments [Abstract]
Foreign currency translation	$ (1.2)	$ (13.1)	$ (10.9)	$ (30.9)
Foreign currency translation, tax	0	0	0	0
Foreign currency translation, net of tax	(1.2)	(13.1)	(10.9)	(30.9)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax, Attributable to Parent [Abstract]
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Tax, after Reclassification Adjustment, Attributable to Parent	0.1	0.2	0.4	0.5
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax, Attributable to Parent	(0.1)	(0.4)	0	(0.7)
Net change in employee benefit plans	0	(0.2)	0.4	(0.2)
Total cash flow hedges	(0.4)	(1.3)	(3.8)	(3.8)
Changes in fair value of cash flow hedges:
Changes in fair value of cash flow hedges, before tax	(0.6)	(1.3)	(4.7)	(4.1)
Changes in fair value of cash flow hedges, tax	0.2	0	0.9	0.3
Total other comprehensive earnings [Abstract]
Other comprehensive loss, before tax	(1.7)	(14.2)	(15.2)	(34.5)
Other comprehensive loss, tax	0.1	(0.4)	0.9	(0.4)
Other comprehensive loss, net of tax	(1.6)	(14.6)	(14.3)	(34.9)
Net losses reclassified into earnings	$ 0.8	$ 1.7	$ 1.3	$ 2.3

Other Comprehensive Loss - AOCI

Other Comprehensive Loss - AOCI (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Amortization or settlement of actuarial losses and prior service costs	$ 0.1	$ 0.2	$ 0.4	$ 0.5
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, Tax	0.1	0.4	0	0.7
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, after Tax	0	(0.2)	0.4	(0.2)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax	1	2	1.6	2.7
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	(0.2)	(0.3)	(0.3)	(0.4)
Net losses reclassified into earnings	0.8	1.7	1.3	2.3
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Beginning balance			(122.1)	(100.4)
Other comprehensive (loss) earnings, net of tax	(1.6)	(14.6)	(14.3)	(34.9)
Ending balance	(136.4)	(135.3)	(136.4)	(135.3)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Beginning balance			1	0.3
Other comprehensive (loss) earnings, net of tax			(3.8)	(3.8)
Ending balance	(2.8)	(3.5)	(2.8)	(3.5)
Employee benefit plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Beginning balance			(16.3)	(17.1)
Other comprehensive (loss) earnings, net of tax			0.4	(0.2)
Ending balance	(15.9)	(17.3)	(15.9)	(17.3)
Cumulative foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Beginning balance			(106.8)	(83.6)
Other comprehensive (loss) earnings, net of tax			(10.9)	(30.9)
Ending balance	$ (117.7)	$ (114.5)	$ (117.7)	$ (114.5)

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Jun. 30, 2024
Income Tax Holiday [Line Items]
Share-based Payment Arrangement, Expense	$ 6.9	$ 6.8	$ 21.8	$ 21.6
Effective tax rate (benefit) provision	22.80%	119.90%	28.20%	(5.90%)
Income Tax Expense (Benefit)	$ 4.9	$ (16.3)	$ 9.8	$ 12.4
Other expense (income), net	0.5	$ 2.1	(0.5)	0.9
Effective Income Tax Rate Reconciliation, Discrete Items	$ (0.8)		$ (0.1)	$ (1.6)
Effective Tax Rate Excluding Discrete Items	26.50%	119.90%	28.40%	(6.70%)
Share-based Payment Arrangement, Expense, Tax Benefit	$ 0	$ 0.1	$ 3.2	$ 4.1
Maximum [Member] | Subsequent Event
Income Tax Holiday [Line Items]
Valuation Allowance Release within the Next Twelve Months [Line Items]					$ 11.6
Foreign Tax Authority
Income Tax Holiday [Line Items]
Effective income tax rate reconciliation, tax holiday	$ (0.7)	$ (4)	$ (1.3)	$ (0.9)
Holiday benefit (usd per share)		$ (0.04)		$ 0.01
Income Tax Holiday, Income Tax Expense Per Share	$ 0.01		$ 0.01

Equity Incentive Program - Stoc

Equity Incentive Program - Stock Options and SSARs (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Payment Arrangement, Expense	$ 6,900,000	$ 6,800,000	$ 21,800,000	$ 21,600,000
Share-based Payment Arrangement, Expense, Tax Benefit	0	100,000	3,200,000	4,100,000
Share-Based Payment Arrangement, Expense, after Tax	6,900,000	6,700,000	18,600,000	17,500,000
SARS and Options, Additional Disclosures
Share-based Payment Arrangement, Expense, Tax Benefit	0	$ 100,000	3,200,000	$ 4,100,000
SSARs
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 0		$ 0
Number of Shares [Roll Forward]
Beginning balance			223,564
Exercised			0
Forfeited			0
Expired			(223,564)
Ending balance	0		0
Exercised	0		0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instrument Other than Options, Expired in Period, Weighted Average Exercise Price			$ 23.92
Weighted Average Grant Date Fair Value
Beginning balance			23.92
Exercised			0
Forfeited			0
Ending balance	$ 0		0
Exercisable	$ 0		$ 0
SARS and Options, Additional Disclosures
SSARs, aggregate intrinsic value, outstanding	$ 0		$ 0
SSARs, aggregate intrinsic value, exercisable	0		$ 0
SSARs, weighted average remaining contractual terms, outstanding			0 years
SSARs, weighted average remaining contractual term, exercisable			0 years
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 600,000		$ 600,000
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Dividend yield				0%
Stock Options, Number of Shares
Beginning balance			2,703,424
Exercised			(536,771)
Forfeited			(12,684)
Expired			(49,613)
Ending balance	2,104,356		2,104,356
Exercisable	1,946,512		1,946,512
Stock Options, Weighted Average Exercise Price
Beginning balance			$ 16.28
Exercised			12.47
Forfeited			20.97
Expired			19.49
Ending balance	$ 17.15		17.15
Exercisable	$ 16.84		$ 16.84
SARS and Options, Additional Disclosures
Options, aggregate intrinsic value, outstanding	$ 200,000		$ 200,000
Options, aggregate intrinsic value, exercisable	$ 200,000		$ 200,000
Options, weighted average remaining contractual term, outstanding			2 years 6 months
Options, weighted average remaining contractual term, exercisable			2 years 3 months 18 days
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition			1 year 1 month 6 days
Minimum [Member] | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Risk-free interest rate				0.85%
Expected life (years)				4 years 6 months
Volatility				34.30%
Fair value at date of grant				$ 6.29

Equity Incentive Program - RSUs

Equity Incentive Program - RSUs (Details) - Restricted Stock Units (RSUs)	9 Months Ended
	Sep. 30, 2023 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	1 year 8 months 12 days
Number of Shares [Roll Forward]
Beginning balance | shares	1,880,521
Granted | shares	1,265,748
Vested (1) | shares	(834,521)
Forfeited | shares	(147,153)
Ending balance | shares	2,164,595
Weighted Average Grant Date Fair Value
Beginning balance | $ / shares	$ 19.96
Granted | $ / shares	18.78
Vested (1) | $ / shares	19.54
Forfeited | $ / shares	19.90
Ending balance | $ / shares	$ 19.44

Equity Incentive Program Equity

Equity Incentive Program Equity Incentive Program - PSUs (Details) $ / shares in Units, $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($) $ / shares shares
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | $	$ 12
Number of Shares [Roll Forward]
Beginning balance | shares	833,589
Granted | shares	320,585
Vested (1) | shares	(261,770)
Forfeited | shares	(37,125)
Ending balance | shares	855,279
Weighted Average Grant Date Fair Value
Beginning balance | $ / shares	$ 25.12
Granted | $ / shares	29.75
Vested (1) | $ / shares	16.14
Forfeited | $ / shares	29.20
Ending balance | $ / shares	$ 29.42
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | $	$ 26.1
Number of Shares [Roll Forward]
Beginning balance | shares	1,880,521
Granted | shares	1,265,748
Vested (1) | shares	(834,521)
Forfeited | shares	(147,153)
Ending balance | shares	2,164,595
Weighted Average Grant Date Fair Value
Beginning balance | $ / shares	$ 19.96
Granted | $ / shares	18.78
Vested (1) | $ / shares	19.54
Forfeited | $ / shares	19.90
Ending balance | $ / shares	$ 19.44

Equity Incentive Program - Addi

Equity Incentive Program - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Payment Arrangement, Expense	$ 6,900,000	$ 6,800,000	$ 21,800,000	$ 21,600,000
Share-based Payment Arrangement, Expense, Tax Benefit	0	$ 100,000	3,200,000	$ 4,100,000
SSARs
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	0		0
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	600,000		$ 600,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition			1 year 1 month 6 days
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	26,100,000		$ 26,100,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition			1 year 8 months 12 days
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 12,000,000		$ 12,000,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition			1 year 4 months 24 days
Minimum [Member] | Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award
Percentage increase of initial grant value			0%
Maximum [Member] | Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award
Percentage increase of initial grant value			225%

Earnings per Share (Details)

Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Reconciliation of information used in computing basic and diluted earnings per share [Abstract]
Net earnings (loss)	$ 16.6	$ 2.7	$ 25	$ (222.1)
Basic:
Net earnings (loss) per share, basic	$ 0.18	$ 0.03	$ 0.27	$ (2.42)
Weighted average shares outstanding	90,800,000	91,400,000	91,200,000	91,900,000
Diluted:
Net earnings (loss) per share, diluted	$ 0.18	$ 0.03	$ 0.27	$ (2.42)
Diluted (in shares)	91,400,000	92,000,000	91,900,000	91,900,000
Share-based Payment Arrangement
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted average number of anti-dilutive shares excluded from the calculation (in shares)	1,700,000	3,200,000	2,400,000	3,000,000

Segment Information (Details)

Segment Information (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) segments	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Segment Reporting Information
Billed Contracts Receivable	$ 112.4		$ 112.4		$ 125.7
Number of reportable segments | segments			3
Assets	1,182.2		$ 1,182.2		1,183.9
Revenues	175.1	$ 178.2	492.4	$ 567.6
Reconciliation of Net Earnings from Segments [Abstract]
Earnings (loss) before income taxes	21.5	(13.6)	34.8	(209.7)
Provision for (benefit from) income taxes	4.9	(16.3)	9.8	12.4
Net earnings (loss)	16.6	2.7	25	(222.1)
Asia
Segment Reporting Information
Revenues	109.6	105.3	298.5	347.2
United States
Segment Reporting Information
Revenues	36.1	43.7	105.4	129.3
Europe
Segment Reporting Information
Revenues	25.1	24.5	74.9	80.2
Other Americas
Segment Reporting Information
Revenues	1.1	2.9	4.5	5.5
Other Geographical Locations
Segment Reporting Information
Revenues	3.2	1.8	9.1	5.4
Operating Segments
Reconciliation of Net Earnings from Segments [Abstract]
Earnings (loss) before interest and income taxes	39.4	(0.7)	88	(171.4)
Operating Segments | Precision Devices
Segment Reporting Information
Assets	292.1		292.1		275.7
Revenues	50.2	64.4	151.7	179.6
Reconciliation of Net Earnings from Segments [Abstract]
Earnings (loss) before interest and income taxes	6.1	16.2	21.6	39.5
Operating Segments | MedTech & Specialty Audio
Segment Reporting Information
Assets	350.2		350.2		358.1
Revenues	56.5	47	162.6	168.1
Reconciliation of Net Earnings from Segments [Abstract]
Earnings (loss) before interest and income taxes	22.2	15.4	57.2	60.2
Operating Segments | Consumer MEMS Microphones
Segment Reporting Information
Assets	536.3		536.3		547.3
Revenues	68.4	66.8	178.1	219.9
Reconciliation of Net Earnings from Segments [Abstract]
Earnings (loss) before interest and income taxes	11.1	(32.3)	9.2	(271.1)
Corporate, Non-Segment [Member]
Segment Reporting Information
Assets	3.6		3.6		$ 2.8
Reconciliation of Net Earnings from Segments [Abstract]
Corporate expense / other	17.3	11.8	51	35.6
Interest expense, net	$ 0.6	$ 1.1	$ 2.2	$ 2.7

Subsequent Events (Details)

Subsequent Events (Details) - Cornell Dubilier - Precision Devices - USD ($) $ in Millions	Nov. 01, 2023	Sep. 30, 2023
Selling, General and Administrative Expenses
Subsequent Event [Line Items]
Business Acquisition, Transaction Costs		$ 3
Subsequent Event
Subsequent Event [Line Items]
Business Combination, Price of Acquisition, Expected	$ 263
Payments to Acquire Businesses, Gross	140
Business Combination, Consideration Transferred, Liabilities Incurred	123
Subsequent Event | Notes Payable, Other Payables
Subsequent Event [Line Items]
Business Combination, Consideration Transferred, Liabilities Incurred	73
Subsequent Event | Notes Payable, Other Payables
Subsequent Event [Line Items]
Business Combination, Consideration Transferred, Liabilities Incurred	$ 50

Uncategorized Items - kn-202309

Label	Element	Value
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations	us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	$ 48,200,000
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations	us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	$ 68,900,000