Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Net sales	$ 245.3	$ 212.7	$ 707.4	$ 607.7
Cost of sales	188.5	170.0	549.6	485.4
Gross margin	56.8	42.7	157.8	122.3
Operating expenses	39.3	35.8	115.7	109.5
Goodwill impairment				9.5
Restructuring charge				1.5
Gain on disposal of assets	1.6		1.6
Operating income	19.1	6.9	43.7	1.8
Interest expense, net	0.7	0.8	2.0	3.0
Income (loss) from operations before income taxes	18.4	6.1	41.7	(1.2)
Income tax benefit	(0.3)
Income (loss) from continuing operations	18.7	6.1	41.7	(1.2)
Net income (loss)	$ 18.7	$ 6.1	$ 41.7	$ (1.2)
Earnings (loss) per share:
Earnings (loss) from continuing operations per share- basic	$ 0.68	$ 0.24	$ 1.52	$ (0.04)
Net earnings (loss) per share - basic	0.68	0.24	1.52	(0.04)
Earnings (loss) from continuing operations per share- diluted	0.68	0.24	1.52	(0.04)
Net earnings (loss) per share- diluted	$ 0.68	$ 0.24	$ 1.52	$ (0.04)
Weighted average shares outstanding:
Basic shares outstanding	27.4	26.0	27.4	26.0
Diluted shares outstanding	27.5	26.2	27.5	26.0