CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Statement [Abstract]
Net sales	$ 231.8	$ 256.2	$ 724.9	$ 794.0
Cost of products sold	187.1	214.9	585.8	645.2
Gross profit	44.7	41.3	139.1	148.8
Selling, general and administrative expenses	23.1	23.6	75.3	75.6
Impairment loss (Note 12)	0.0	2.0	0.0	34.0
Restructuring and other non-routine costs (Note 13)	2.4	2.2	5.9	2.5
Pension settlement and other benefit costs (Note 7)	0.1	0.0	0.1	1.8
Acquisition-related adjustments (Note 1)	0.0	(3.1)	0.0	(3.1)
Insurance settlement	0.0	(0.4)	0.0	(0.4)
Other expense - net	0.1	0.5	1.6	2.1
Operating income	19.0	16.5	56.2	36.3
Interest expense - net	2.8	3.2	9.0	9.8
Income from continuing operations before income taxes	16.2	13.3	47.2	26.5
Provision for income taxes	1.8	0.4	7.4	2.2
Income from continuing operations	14.4	12.9	39.8	24.3
Loss from discontinued operations (Note 1)	0.0	(0.8)	0.0	(0.8)
Net income	$ 14.4	$ 12.1	$ 39.8	$ 23.5
Basic
Continuing operations (in usd per share)	$ 0.85	$ 0.76	$ 2.35	$ 1.43
Discontinued operations (in usd per share)	0	(0.05)	0	(0.05)
Basic (in usd per share)	0.85	0.71	2.35	1.38
Diluted
Continuing operations (in usd per share)	0.84	0.75	2.33	1.41
Discontinued operations (in usd per share)	0	(0.05)	0	(0.05)
Diluted (in usd per share)	$ 0.84	$ 0.70	$ 2.33	$ 1.36
Weighted Average Common Shares Outstanding (in thousands)
Basic (in shares)	16,837	16,849	16,850	16,848
Diluted (in shares)	16,905	16,988	16,910	16,984
Cash dividends declared per share of common stock (in usd per share)	$ 0.45	$ 0.41	$ 1.35	$ 1.23