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Revenue Recognition - Unearned Revenue (Details)
$ in Millions
Sep. 30, 2023
USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-10-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Unearned revenue $ 2.6
Expected timing of satisfaction 12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-10-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Unearned revenue $ 0.5
Expected timing of satisfaction 12 months