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Summary of Significant Accounting Policies, Revenue Recognition and Segment Reporting (Details) $ in Millions | 12 Months Ended
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Mar. 31, 2018 USD ($) Segment | Mar. 31, 2017 USD ($) | Mar. 31, 2016 USD ($)
Segment Reporting [Abstract] |  |  |
Number of reportable segments | Segment | 1 |  |
ASU 2014-09 [Member] | Maximum [Member] |  |  |
Revenue Recognition [Abstract] |  |  |
Increase (decrease) in anticipated revenue | $ | $ (0.4) | $ (0.9) | $ 2.0

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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
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