Income Taxes (Narrative) (Details) - $ / shares |
3 Months Ended | |
|---|---|---|
Aug. 31, 2018 |
Aug. 31, 2017 |
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| Income Taxes [Abstract] | ||
| Effective income tax rate | 24.50% | 34.10% |
| Net diluted earnings per share related to employee stock-based compensation payments | $ 0.01 | $ 0.01 |
| X | ||||||||||
- Definition Net Tax Benefit Earnings Per Diluted Share Related To Employee Stock Based Compensation Payments No definition available.
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| X | ||||||||||
- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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