Segment Information (Tables)

12 Months Ended

Dec. 31, 2020

Segment Reporting [Abstract]

Revenue and Earnings from continuing operations by market segment

	Years Ended December 31,
(in millions)	2020		2019		2018
Revenues:
Audio	$	591.2	$	682.8	$	682.2
Precision Devices	173.1		172.0		144.7
Total revenues	$	764.3	$	854.8	$	826.9
Earnings from continuing operations before interest and income taxes:
Audio	$	44.9	$	107.3	$	105.7
Precision Devices	31.7		30.4		27.5
Total segments	76.6		137.7		133.2
Corporate expense / other	48.9		56.9		56.1
Interest expense, net	16.4		14.5		16.0
Earnings before income taxes and discontinued operations	11.3		66.3		61.1
Provision for (benefit from) income taxes	8.4		16.6		(4.5)
Earnings from continuing operations	$	2.9	$	49.7	$	65.6
Depreciation and amortization:
Audio	$	47.0	$	41.3	$	41.5
Precision Devices	10.5		9.9		7.8
Corporate	3.1		3.2		3.1
Total	$	60.6	$	54.4	$	52.4
Capital expenditures:
Audio	$	21.9	$	24.0	$	68.2
Precision Devices	9.6		16.5		10.8
Corporate	0.4		0.7		1.1
Total	$	31.9	$	41.2	$	80.1
Research and development:
Audio	$	84.6	$	90.8	$	94.5
Precision Devices	6.7		5.8		5.8
Corporate	1.6		0.2		0.3
Total	$	92.9	$	96.8	$	100.6

Information regarding assets of the Company's reportable segments:

	Total Assets
	December 31,
(in millions)	2020		2019
Audio	$	1,470.4	$	1,487.6
Precision Devices	179.2		162.0
Corporate / eliminations	5.3		5.0
Total	$	1,654.9	$	1,654.6

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. Long-lived assets are comprised of net property, plant, and equipment and operating lease right-of-use assets. These assets have been classified based on the geographic location of where they reside. The Company's businesses are based primarily in Asia, North America, and Europe.

	Revenues						Long-Lived Assets
	Years Ended December 31,						December 31,
(in millions)	2020		2019		2018		2020		2019
Asia	$	559.6	$	614.7	$	605.4	$	140.5	$	157.9
United States	116.7		130.4		126.6		69.8		78.5
Europe	80.0		97.4		85.8		3.3		2.5
Other Americas	3.7		6.3		3.6		1.2		1.2
Other	4.3		6.0		5.5		—		—
Total	$	764.3	$	854.8	$	826.9	$	214.8	$	240.1