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Fair Value Measurements (Details) - USD ($) $ in Thousands | May 31, 2018 | Nov. 30, 2017
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Foreign exchange derivatives |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Foreign exchange derivatives | $ (1,471) | $ (27)
Foreign exchange derivatives | Level 1 |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Foreign exchange derivatives | 0 | 0
Foreign exchange derivatives | Level 2 |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Foreign exchange derivatives | (1,471) | (27)
Foreign exchange derivatives | Level 3 |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Foreign exchange derivatives | 0 | 0
Money market funds |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Fair value of financial assets | 598 | 2,917
Money market funds | Level 1 |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Fair value of financial assets | 598 | 2,917
Money market funds | Level 2 |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Fair value of financial assets | 0 | 0
Money market funds | Level 3 |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Fair value of financial assets | 0 | 0
State and municipal bond obligations |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Fair value of financial assets | 32,139 | 40,227
State and municipal bond obligations | Level 1 |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Fair value of financial assets | 0 | 0
State and municipal bond obligations | Level 2 |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Fair value of financial assets | 32,139 | 40,227
State and municipal bond obligations | Level 3 |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Fair value of financial assets | 0 | 0
U.S. treasury bonds |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Fair value of financial assets | 6,676 | 3,491
U.S. treasury bonds | Level 1 |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Fair value of financial assets | 0 | 0
U.S. treasury bonds | Level 2 |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Fair value of financial assets | 6,676 | 3,491
U.S. treasury bonds | Level 3 |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Fair value of financial assets | 0 | 0
Corporate bonds |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Fair value of financial assets | 8,264 | 6,427
Corporate bonds | Level 1 |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Fair value of financial assets | 0 | 0
Corporate bonds | Level 2 |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Fair value of financial assets | 8,264 | 6,427
Corporate bonds | Level 3 |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Fair value of financial assets | $ 0 | $ 0

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