Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Statement [Abstract]
Net sales	$ 812.0	$ 839.6	$ 753.2
Cost of sales	650.0	673.1	597.4
Gross margin	162.0	166.5	155.8
Operating expenses	165.6	167.5	155.7
Gain on disposal of capital assets		(0.1)
Operating income (loss)	(3.6)	(0.9)	0.1
Interest expense, net	6.6	6.5	3.1
Loss from continuing operations before income taxes	(10.2)	(7.4)	(3.0)
Provision for (benefit from) income taxes	11.1	(1.4)	3.2
Net loss from continuing operations	(21.3)	(6.0)	(6.2)
Net loss from discontinued operations, net of taxes of ($0.0), ($0.1) and ($0.6), respectively		(0.4)	(0.9)
Net loss	$ (21.3)	$ (6.4)	$ (7.1)
Net loss from continuing operations per share - basic and diluted	$ (0.84)	$ (0.24)	$ (0.25)
Net income loss from discontinued operations per share - basic and diluted		(0.02)	(0.04)
Net loss per share - basic and diluted	$ (0.84)	$ (0.26)	$ (0.29)
Weighted average shares outstanding:
Basic and diluted shares outstanding	25.4	25.1	24.9