Annual report pursuant to Section 13 and 15(d)

Consolidated Balance Sheets (Parenthetical)

v3.20.1
Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Statement of Financial Position [Abstract]    
Property Plant and equipment, accumulated depreciation and amortization $ 318.4 $ 318.8
Intangible assets, accumulated amortization $ 19.0 $ 12.0
Common stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Common stock, shares authorized (in shares) 100,000,000 100,000,000
Common stock, shares issued (in shares) 28,357,658 28,284,358
Common stock, shares outstanding (in shares) 21,519,761 25,832,193
Preferred stock, par value (in dollars per share) $ 0.0001  
Preferred stock, shares authorized (in shares) 15,000,000  
Treasury stock (in shares) 6,837,897 2,452,165