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Fair Value Measurements Schedule of Fair Value Assets and Liabilities (Details) - USD ($) $ in Thousands | Sep. 30, 2019 | Mar. 31, 2019
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Non-qualified deferred compensation asset | $ 7,332 | $ 7,300
Non-qualified deferred compensation liability | (4,380) | (4,447)
Derivative contracts liability | (172) |
Level 1 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Non-qualified deferred compensation asset | 7,332 | 7,300
Non-qualified deferred compensation liability | (4,380) | $ (4,447)
Non-Designated Derivative Contracts |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative contracts assets | 317 |
Derivative contracts liability | (172) |
Non-Designated Derivative Contracts | Level 2 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative contracts assets | 317 |
Derivative contracts liability | (172) |
Derivatives designated as cash flow hedges | Designated Derivative Contracts |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative contracts assets | 1,557 |
Derivative contracts liability | 0 |
Derivatives designated as cash flow hedges | Designated Derivative Contracts | Level 2 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative contracts assets | $ 1,557 |

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