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Leases - Narrative (Details) $ in Millions	3 Months Ended	9 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)
Leases [Abstract]
Operating lease costs	$ 3.4	$ 10.3
Weighted-average remaining lease term	3 years 10 months 24 days	3 years 10 months 24 days
Weighted-average discount rate	2.90%	2.90%
Cash paid for operating lease liabilities	$ 3.5	$ 9.9
Right-of-use assets obtained in exchange for operating lease liabilities	$ 0.1	$ 5.0

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Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

+ References

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-Publisher FASB
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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

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Weighted average discount rate for operating lease calculated at point in time.

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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of increase in right-of-use asset obtained in exchange for operating lease liability.

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