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Financing Arrangements - Narrative (Details) - USD ($) | Dec. 31, 2019 | Mar. 31, 2019
--- | --- | ---
Financing Arrangements |  |
Outstanding borrowings | $ 0 | $ 0
Line of Credit |  |
Financing Arrangements |  |
Maximum borrowing capacity | 78,400,000 |
Outstanding bank guarantees | $ 17,100,000 |

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