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Income Taxes, Income Tax Examination, and Tax Credits and Carryforwards (Details) $ in Millions | 12 Months Ended
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Mar. 31, 2019 USD ($)
Operating Loss Carryforwards [Line Items] |
Unrecognized foreign withholding taxes and deferred tax liabilities | $ 7.0
Germany [Member] |
Income Tax Examination [Line Items] |
Open tax year for examination by tax jurisdictions | Fiscal 2011 - Fiscal 2018
Italy [Member] |
Income Tax Examination [Line Items] |
Open tax year for examination by tax jurisdictions | Calendar 2014 - Fiscal 2018
United States [Member] |
Income Tax Examination [Line Items] |
Open tax year for examination by tax jurisdictions | Fiscal 2016 - Fiscal 2018
Federal and State [Member] |
Tax Credit Carryforward [Line Items] |
Tax credit carryforwards, research and development | $ 60.0
Federal and State [Member] | Minimum [Member] |
Tax Credit Carryforward [Line Items] |
Tax loss credit carryforward, expiration date | Mar. 31, 2020
Federal and State [Member] | Maximum [Member] |
Tax Credit Carryforward [Line Items] |
Tax loss credit carryforward, expiration date | Mar. 31, 2039
Foreign Tax Jurisdictions [Member] |
Operating Loss Carryforwards [Line Items] |
Tax loss carryforwards | $ 351.6
Tax losses subject to expiration | 9.7
Tax losses not subject to expiration | $ 341.9
Foreign Tax Jurisdictions [Member] | Minimum [Member] |
Operating Loss Carryforwards [Line Items] |
Tax loss carryforwards, expiration date | Mar. 31, 2020
Foreign Tax Jurisdictions [Member] | Maximum [Member] |
Operating Loss Carryforwards [Line Items] |
Tax loss carryforwards, expiration date | Mar. 31, 2034
State and Local [Member] |
Operating Loss Carryforwards [Line Items] |
Tax loss carryforwards | $ 129.5
State and Local [Member] | Minimum [Member] |
Operating Loss Carryforwards [Line Items] |
Tax loss carryforwards, expiration date | Mar. 31, 2020
State and Local [Member] | Maximum [Member] |
Operating Loss Carryforwards [Line Items] |
Tax loss carryforwards, expiration date | Mar. 31, 2039

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