CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Allowance for doubtful accounts receivable	$ 1.1	$ 0.2	$ 1.6
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	400,000,000	400,000,000
Common stock, shares issued (in shares)	96,431,604	95,112,778
Common Stock, Shares, Outstanding	91,078,376	91,894,980
Treasury Stock, Shares	5,353,228	3,217,798