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Investment (Income), Net | 9 Months Ended
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Feb. 28, 2018
Other Income And Expenses [Abstract] |
Investment (Income), Net | NOTE 7 — INVESTMENT (INCOME), NET Investment (income), net, consists of the following components:
|  | Three Months Ended |  |  | Nine Months Ended |
|  | February 28, |  |  | February 28, |  |  | February 28, |  |  | February 28, |
(In thousands) |  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Interest (income) |  | $ | (1,454 | ) |  | $ | (1,599 | ) |  | $ | (3,645 | ) |  | $ | (3,832 | )
Net (gain) on sale of marketable securities |  |  | (1,935 | ) |  |  | (1,640 | ) |  |  | (6,833 | ) |  |  | (5,338 | )
Other-than-temporary impairment on securities |  |  |  |  |  |  | 17 |  |  |  |  |  |  |  | 420 |
Dividend (income) |  |  | (2,082 | ) |  |  | (405 | ) |  |  | (3,185 | ) |  |  | (1,131 | )
Investment (income), net |  | $ | (5,471 | ) |  | $ | (3,627 | ) |  | $ | (13,663 | ) |  | $ | (9,881 | )

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- Definition The entire disclosure for other income or other expense items (both operating and nonoperating). Sources of nonoperating income or nonoperating expense that may be disclosed, include amounts earned from dividends, interest on securities, profits (losses) on securities, net and miscellaneous other income or income deductions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -URI http://asc.fasb.org/topic&trid=2122503 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 610 -URI http://asc.fasb.org/topic&trid=49130413 + Details
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