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Other Expense (Income), Net (Tables) | 6 Months Ended
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Nov. 30, 2018
Other Income And Expenses [Abstract] |
Other Expense (Income), Net | Other expense (income), net, consists of the following components:
|  | Three Months Ended |  |  | Six Months Ended |
|  | November 30, |  |  | November 30, |  |  | November 30, |  |  | November 30, |
(In thousands) |  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Royalty expense (income), net |  | $ | 63 |  |  | $ | (178 | ) |  | $ | 66 |  |  | $ | 90 |
(Income) related to unconsolidated equity affiliates |  |  | (48 | ) |  |  | (244 | ) |  |  | (166 | ) |  |  | (517 | )
Pension non-service costs |  |  | 346 |  |  |  | - |  |  |  | 774 |  |  |  | - |
Loss on extinguishment of debt (a) |  |  | 3,051 |  |  |  | - |  |  |  | 3,051 |  |  |  | - |
Other expense (income), net |  | $ | 3,412 |  |  | $ | (422 | ) |  | $ | 3,725 |  |  | $ | (427 | )
(a) | In connection with the redemption of all of our outstanding 2.25% convertible senior notes in November 2018, we recognized a loss of $3.1 million, due to the fair value measurement of the instrument on the date of conversion.

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