Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
Net sales	$ 214.7	$ 203.0
Cost of sales	169.0	162.1
Gross margin	45.7	40.9
Operating expenses	36.9	39.0
Goodwill impairment		9.5
Operating income (loss)	8.8	(7.6)
Interest expense, net	0.7	1.3
Income (loss) from operations before income taxes	8.1	(8.9)
Income (loss) from continuing operations	8.1	(8.9)
Net income (loss)	$ 8.1	$ (8.9)
Earnings (loss) per share:
Earnings (loss) from continuing operations per share- basic	$ 0.30	$ (0.34)
Net earnings (loss) per share - basic	0.30	(0.34)
Earnings (loss) from continuing operations per share- diluted	0.30	(0.34)
Net income (loss) per share- diluted	$ 0.30	$ (0.34)
Weighted average shares outstanding:
Basic shares outstanding	27.3	25.9
Diluted shares outstanding	27.4	25.9