Unaudited Quarterly Data (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 220.5	$ 232.9	$ 246.0	$ 242.1	$ 230.4	$ 231.6	$ 211.3	$ 214.4	$ 941.5	$ 887.7	$ 839.7
Gross Profit	46.5	49.2	60.0	58.8	49.5	48.4	48.0	49.5	214.5	195.4	170.8
Operating Income	21.9	26.9	33.9	31.4	20.9	24.4	27.7	28.4	114.1	101.4	86.6
Income from continuing operations	$ 16.4	$ 16.4	$ 21.4	$ 19.2	$ 14.5	$ 13.5	$ 16.4	$ 16.1	$ 73.4	$ 60.5	$ 68.0
Earnings (Loss) Per Common Share
Basic (in dollar per share)	$ 0.97	$ 0.97	$ 1.26	$ 1.13	$ 0.86	$ 0.79	$ 0.97	$ 0.95	$ 4.33	$ 3.58	$ 4.05
Diluted (in dollars per share)	$ 0.95	$ 0.95	$ 1.24	$ 1.11	$ 0.85	$ 0.78	$ 0.96	$ 0.94	$ 4.26	$ 3.53	$ 3.99
Integration/restructuring costs									$ 7.0	$ 6.5	$ 2.3
Pension plan settlement charge									$ 0.8	$ 0.0	$ 3.5