CONSOLIDATED STATEMENTS OF EARNINGS (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Statement [Abstract]
Revenues	$ 152.2	$ 205.2	$ 315.3	$ 385.0
Cost of goods sold	103.5	128.4	209.0	239.2
Restructuring charges - cost of goods sold	0.9	0.4	2.3	0.9
Gross profit	47.8	76.4	104.0	144.9
Research and development expenses	22.6	25.0	48.3	49.7
Selling and administrative expenses	31.1	38.9	67.3	76.5
Restructuring charges	6.5	0.1	10.4	1.9
Operating expenses	60.2	64.0	126.0	128.1
Operating (loss) earnings	(12.4)	12.4	(22.0)	16.8
Interest expense, net	4.1	3.6	7.8	7.1
Other expense (income), net	1.9	(0.5)	(0.8)	0.5
(Loss) earnings before income taxes and discontinued operations	(18.4)	9.3	(29.0)	9.2
Provision for income taxes	1.1	3.4	3.3	6.0
(Loss) earnings from continuing operations	(19.5)	5.9	(32.3)	3.2
Earnings from discontinued operations, net	0.0	0.0	3.7	0.0
Net (loss) earnings	$ (19.5)	$ 5.9	$ (28.6)	$ 3.2
Earnings per share:
Earnings (loss) from continuing operations, per basic share	$ (0.21)	$ 0.06	$ (0.35)	$ 0.04
Earnings (loss) from continuing operations, per diluted share	(0.21)	0.06	(0.35)	0.03
Earnings from discontinued operations, per basic share	0	0	0.04	0
Earnings from discontinued operations, per diluted share	0	0	0.04	0
Net earnings (loss) per share, basic	(0.21)	0.06	(0.31)	0.04
Net earnings (loss) per share, diluted	$ (0.21)	$ 0.06	$ (0.31)	$ 0.03
Weighted-average common shares outstanding:
Basic (in shares)	91,589,156	91,018,213	91,721,440	90,780,035
Diluted (in shares)	91,589,156	92,507,279	91,721,440	92,184,274