Subsequent Events	3 Months Ended
Mar. 31, 2016
Subsequent Events [Abstract]
Subsequent Events	On May 4, 2016, the Company sold $150.0 million aggregate principal amount of 3.25% convertible senior notes due 2021 (the “Notes”) in a private placement to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended. The Notes are unsecured, senior obligations of the Company and interest is payable semi-annually in arrears. The Notes will be convertible into cash, shares of the Company's common stock or a combination thereof, at the Company's election, based on an initial conversion rate of 54.2741 shares of common stock per $1,000 principal amount of Notes. The Company received approximately $140.0 million in net proceeds, after paying certain transaction costs and the cost of the convertible note hedge and warrant transactions discussed below, and will use the net proceeds to reduce borrowings outstanding under the Company's term loan facility. Knowles also granted the initial purchasers of the Notes a 30-day option to purchase up to an additional $22.5 million aggregate principal amount of the Notes. Concurrently with the issuance of the Notes, the Company entered into (i) convertible note hedge transactions covering approximately 8.1 million shares of the Company's common stock (the same number of shares underlying the Notes), which are exercisable upon conversion of the Notes and have an initial strike price that corresponds to the initial conversion price of the Notes, and (ii) warrants covering approximately 8.1 million shares of the Company’s common stock, which are exercisable after the maturity date of the Notes and have an initial strike price of $21.105 per share, which represents a premium of 57.50% over the last reported sale price of the Company’s common stock of $13.40 on April 28, 2016. The note hedge transactions are expected to reduce the potential dilution to the Company’s common stock upon any conversion of the Notes and/or offset any cash payments the Company is required to make in excess of the principal amount of the converted Notes, as the case may be, in the event that the market price per share of the Company’s common stock, as measured under the note hedge transactions, is greater than the strike price of the note hedge transactions. If the market price per share of the Company’s common stock, as measured under the warrants, exceeds the strike price of the warrants, the warrants could have a dilutive effect with respect to the Company’s common stock, unless the Company elects, subject to certain conditions, to settle the warrants in cash. In connection with the Company’s offering of the Notes, the Company entered into a fourth amendment to its Credit Agreement on April 27, 2016. The fourth amendment, among other things (i) added language to permit the Company to execute the offering of the Notes and the related transactions necessary, (ii) amended the requirement of the leverage ratio for it not to exceed 3.75 (previously 3.25) and (iii) added a definition for the “Senior Secured Leverage Ratio” and set a requirement for it not to exceed 3.25.

On May 4, 2016, the Company sold $150.0 million aggregate principal amount of 3.25% convertible senior notes due 2021 (the “Notes”) in a private placement to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended. The Notes are unsecured, senior obligations of the Company and interest is payable semi-annually in arrears. The Notes will be convertible into cash, shares of the Company's common stock or a combination thereof, at the Company's election, based on an initial conversion rate of 54.2741 shares of common stock per $1,000 principal amount of Notes. The Company received approximately $140.0 million in net proceeds, after paying certain transaction costs and the cost of the convertible note hedge and warrant transactions discussed below, and will use the net proceeds to reduce borrowings outstanding under the Company's term loan facility. Knowles also granted the initial purchasers of the Notes a 30-day option to purchase up to an additional $22.5 million aggregate principal amount of the Notes.

Concurrently with the issuance of the Notes, the Company entered into (i) convertible note hedge transactions covering approximately 8.1 million shares of the Company's common stock (the same number of shares underlying the Notes), which are exercisable upon conversion of the Notes and have an initial strike price that corresponds to the initial conversion price of the Notes, and (ii) warrants covering approximately 8.1 million shares of the Company’s common stock, which are exercisable after the maturity date of the Notes and have an initial strike price of $21.105 per share, which represents a premium of 57.50% over the last reported sale price of the Company’s common stock of $13.40 on April 28, 2016. The note hedge transactions are expected to reduce the potential dilution to the Company’s common stock upon any conversion of the Notes and/or offset any cash payments the Company is required to make in excess of the principal amount of the converted Notes, as the case may be, in the event that the market price per share of the Company’s common stock, as measured under the note hedge transactions, is greater than the strike price of the note hedge transactions. If the market price per share of the Company’s common stock, as measured under the warrants, exceeds the strike price of the warrants, the warrants could have a dilutive effect with respect to the Company’s common stock, unless the Company elects, subject to certain conditions, to settle the warrants in cash.

In connection with the Company’s offering of the Notes, the Company entered into a fourth amendment to its Credit Agreement on April 27, 2016. The fourth amendment, among other things (i) added language to permit the Company to execute the offering of the Notes and the related transactions necessary, (ii) amended the requirement of the leverage ratio for it not to exceed 3.75 (previously 3.25) and (iii) added a definition for the “Senior Secured Leverage Ratio” and set a requirement for it not to exceed 3.25.