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Financial Risk Management and Derivatives (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Mar. 31, 2020
Foreign Currency Exchange Contracts [Abstract] |  |  |
Forward foreign currency exchange contracts included in included other current liabilities | $ 3,452,000 |  | $ 6,284,000
Forward Foreign Currency Exchange Contracts [Member] |  |  |
Foreign Currency Exchange Contracts [Abstract] |  |  |
Notional amount of foreign currency derivatives | 36,307,000 |  | $ 42,052,000
Forward Foreign Currency Exchange Contracts [Member] | General and Administrative Expenses [Member] |  |  |
Foreign Currency Exchange Contracts [Abstract] |  |  |
Forward foreign currency exchange contracts | $ 2,832,000 | $ 35,000 |
Forward Foreign Currency Exchange Contracts [Member] | Maximum [Member] |  |  |
Foreign Currency Exchange Contracts [Abstract] |  |  |
Derivative, term of contract | 1 year |  |

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