Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Thousands, $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 5.4	$ 4.9
Current maturities and loan origination fees	6.2	3.2
Debt issuance costs	$ 7.6	$ 12.2
Preferred stock, no par value (in shares)	$ 0	$ 0
Preferred stock, shares authorized (in shares)	300	300
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Preferred stock, no par value (in shares)	$ 0	$ 0
Common stock, shares authorized (in shares)	150,000	150,000
Common stock, shares issued (in shares)	38,100	39,500
Common stock, shares outstanding (in shares)	38,100	39,500