Other Liabilities - Performance Obligations (Details) $ in Millions	Mar. 31, 2021 USD ($)
Performance obligations
Remaining performance obligations	$ 12.6
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-04-01
Performance obligations
Remaining performance obligations	$ 2.3
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01
Performance obligations
Remaining performance obligations	$ 5.4
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	2 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-04-01
Performance obligations
Remaining performance obligations	$ 3.8
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	2 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-04-01
Performance obligations
Remaining performance obligations	$ 1.1
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period