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Financial Risk Management and Derivatives (Details) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Mar. 31, 2021
Foreign Currency Exchange Contracts [Abstract] |  |  |  |  |
Forward foreign currency exchange contracts included in included other current liabilities | $ 1,004,000 |  | $ 1,004,000 |  |
Forward foreign currency exchange contracts included in prepaid and other current assets |  |  |  |  | $ 1,429,000
Forward Foreign Currency Exchange Contracts [Member] |  |  |  |  |
Foreign Currency Exchange Contracts [Abstract] |  |  |  |  |
Notional amount of foreign currency derivatives | 45,133,000 |  | 45,133,000 |  | $ 41,819,000
Forward Foreign Currency Exchange Contracts [Member] | Foreign Exchange Impact of Lease Liabilities and Forward Contracts [Member] |  |  |  |  |
Foreign Currency Exchange Contracts [Abstract] |  |  |  |  |
Forward foreign currency exchange contracts | $ (2,171,000) | $ 2,367,000 | $ (2,433,000) | $ 5,199,000 |
Forward Foreign Currency Exchange Contracts [Member] | Maximum [Member] |  |  |  |  |
Foreign Currency Exchange Contracts [Abstract] |  |  |  |  |
Derivative, term of contract |  |  | 1 year |  |

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