CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Net sales	$ 266.5	$ 242.1
Cost of products sold	214.1	189.4
Gross profit	52.4	52.7
Selling, general and administrative expenses	26.8	24.6
SERP settlement charge	0.8	0.0
Other expense - net (Note 2)	0.7	1.1
Operating income	24.1	27.0
Interest expense - net	3.3	3.2
Income from continuing operations before income taxes	20.8	23.8
Provision for income taxes	4.6	6.2
Net income	$ 16.2	$ 17.6
Basic
Basic earnings per share (in dollars per share)	$ 0.96	$ 1.04
Diluted
Diluted (in dollars per share)	$ 0.95	$ 1.03
Weighted Average Common Shares Outstanding (in thousands)
Basic (in shares)	16,847	16,779
Diluted (in shares)	17,006	17,025
Cash dividends declared per share of common stock (in usd per share)	$ 0.41	$ 0.37