Amount of credit loss recognized for write-down of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

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Revenue Recognition - Narrative (Details)	9 Months Ended	12 Months Ended
Revenue Recognition - Narrative (Details)	Dec. 31, 2018 USD ($) segment	Mar. 31, 2019 USD ($) segment	Mar. 31, 2018 USD ($)
Revenue from Contract with Customer [Abstract]
Number of business segments \| segment	2	2
Performance obligations expected to be satisfied		$ 372,500,000	$ 329,900,000
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Impairment loss recognized	$ 0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Percentage of remaining performance obligation		94.00%
Percentage of remaining performance obligation, expected timing		1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Percentage of remaining performance obligation		6.00%
Percentage of remaining performance obligation, expected timing		1 year