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Derivatives and Hedging - Schedule of Fair Values of Qualifying and Non-Qualifying Instruments Used in Hedging Transactions (Detail) - USD ($) $ in Thousands | Nov. 30, 2017 | May 31, 2017
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Derivatives Designated as Hedging Instruments | Foreign Currency Exchange (Cash Flow) | Other Current Assets |  |
Derivative Instruments And Hedging Activities Disclosures [Line Items] |  |
Fair value of derivatives assets | $ 438 | $ 15
Derivatives Designated as Hedging Instruments | Foreign Currency Exchange (Cash Flow) | Other Accrued Liabilities |  |
Derivative Instruments And Hedging Activities Disclosures [Line Items] |  |
Fair value of derivatives liabilities | 29 |
Derivatives Designated as Hedging Instruments | Cross Currency Swap (Net Investment) | Other Current Assets |  |
Derivative Instruments And Hedging Activities Disclosures [Line Items] |  |
Fair value of derivatives assets | 1,905 |
Derivatives Designated as Hedging Instruments | Cross Currency Swap (Net Investment) | Other Assets (Long-Term) |  |
Derivative Instruments And Hedging Activities Disclosures [Line Items] |  |
Fair value of derivatives assets | 1,658 |
Derivatives Designated as Hedging Instruments | Cross Currency Swap (Net Investment) | Other Long-Term Liabilities |  |
Derivative Instruments And Hedging Activities Disclosures [Line Items] |  |
Fair value of derivatives liabilities | 6,807 |
Derivatives Designated as Hedging Instruments | Interest Rate Swap (Fair Value) | Other Current Assets |  |
Derivative Instruments And Hedging Activities Disclosures [Line Items] |  |
Fair value of derivatives assets | 260 |
Derivatives Designated as Hedging Instruments | Interest Rate Swap (Fair Value) | Other Long-Term Liabilities |  |
Derivative Instruments And Hedging Activities Disclosures [Line Items] |  |
Fair value of derivatives liabilities | 994 |
Derivatives Not Designated as Hedging Instruments | Foreign Currency Exchange (Cash Flow) | Other Current Assets |  |
Derivative Instruments And Hedging Activities Disclosures [Line Items] |  |
Fair value of derivatives assets | 525 | $ 24
Derivatives Not Designated as Hedging Instruments | Foreign Currency Exchange (Cash Flow) | Other Accrued Liabilities |  |
Derivative Instruments And Hedging Activities Disclosures [Line Items] |  |
Fair value of derivatives liabilities | $ 202 |

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- Definition Aggregate fair value of all derivative assets designated as hedging instruments. Includes instruments designated as cash flow hedges, fair value hedges, and hedges of net investments in foreign operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611 + Details
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