Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Property, plant and equipment, accumulated depreciation	$ 321.1	$ 308.2
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	20,000,000	20,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	120,000,000	120,000,000
Common stock, shares issued (in shares)	31,741,607	31,741,607
Common stock, shares outstanding (in shares)	31,729,044	31,666,654
Common stock held in treasury (in shares)	12,563	74,953
Preferred Stock, Shares Issued	0	0