Fair Value of Financial Instruments - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Amounts owed to employees participating in the deferred compensation plan	$ 2.1	$ 2.4
Fair Value, Inputs, Level 2 | Convertible Notes | Convertible Senior Notes due 2024
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value of debt	22.5
Fair Value, Inputs, Level 2 | Convertible Notes | Convertible Senior Notes due 2026
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value of debt	144.6
Fair Value, Inputs, Level 2 | Convertible Notes | Convertible Senior Notes due 2027
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value of debt	$ 230.6