Long-Term Debt - Schedule of Maturities of Long-term Debt (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Maturities of Long-term Debt [Abstract]
Total debt, carrying amount	$ 428.1
2022	174.3
2023	253.8
Interest expense-amortization of deferred financing costs	1.6	$ 2.0	$ 1.9
Senior debt
Maturities of Long-term Debt [Abstract]
Total debt, carrying amount	282.2
2022	28.4
2023	253.8
Convertible senior notes
Maturities of Long-term Debt [Abstract]
Total debt, carrying amount	145.9
2022	145.9
2023	$ 0.0