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Supplemental Balance Sheet Information - Other Long-Term Liabilities (Details) - USD ($)
$ in Millions
Mar. 31, 2021
Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Taxes payable $ 0.4 $ 0.4
Accrued compensation and benefits 5.6 5.8
Other 4.9 4.8
Total $ 10.9 $ 11.0