CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Statement [Abstract]
Net sales	$ 1,034.9	$ 979.9	$ 941.5
Cost of products sold	851.5	779.7	724.2
Gross profit	183.4	200.2	217.3
Selling, general and administrative expenses	95.9	95.3	90.0
Impairment loss (Note 14)	31.1	0.0	0.0
Restructuring, integration and other costs	2.1	1.3	7.0
Pension settlement charge, net of plan payments (Note 8)	1.8	0.6	0.8
Acquisition-related adjustments (Note 4)	(3.9)	0.0	0.0
Insurance settlement	(0.4)	(3.2)	0.0
Other expense — net	2.7	1.9	5.4
Operating income	54.1	104.3	114.1
Interest expense	13.0	12.7	11.2
Interest income	0.0	(0.1)	(0.1)
Income from continuing operations before income taxes	41.1	91.7	103.0
Provision for income taxes	3.9	11.4	29.6
Income from continuing operations	37.2	80.3	73.4
Loss from discontinued operations, net of taxes (Note 13)	(0.8)	0.0	(0.4)
Net income	$ 36.4	$ 80.3	$ 73.0
Basic
Continuing operations (in dollars per share)	$ 2.20	$ 4.74	$ 4.33
Discontinued operations (in dollars per share)	(0.05)	0.00	(0.02)
Basic (in dollars per share)	2.15	4.74	4.31
Diluted
Continuing operations (in dollars per share)	2.17	4.68	4.26
Discontinued operations (in dollars per share)	(0.05)	0.00	(0.02)
Diluted (in dollars per share)	$ 2.12	$ 4.68	$ 4.24
Weighted Average Common Shares Outstanding (in thousands)
Basic (in shares)	16,850	16,805	16,773
Diluted (in shares)	16,968	17,052	17,087