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OTHER INCOME | 3 Months Ended
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Mar. 31, 2018
Other Income and Expenses [Abstract] |
OTHER INCOME, NET | OTHER INCOME Other income consisted of the following for the periods set forth below (amounts in thousands):
| Three months ended
| March 31,
| 2018 |  | 2017
Equity investment income | $ | 1,116 |  |  | $ | 810 |
Interest income | 617 |  |  | 973 |
Building rental income | 578 |  |  | 600 |
Gain (loss) on sale of assets | 181 |  |  | (262 | )
Discount amortization on prepaid royalty | 172 |  |  | 328 |
Investment gain related to investments for deferred compensation | 121 |  |  | 850 |
Other income (expense) | 4,965 |  |  | (622 | )
| $ | 7,750 |  |  | $ | 2,677 |

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- Definition The entire disclosure for the components of non-operating income or non-operating expense, including, but not limited to, amounts earned from dividends, interest on securities, gain (loss) on securities sold, equity earnings of unconsolidated affiliates, gain (loss) on sales of business, interest expense and other miscellaneous income or expense items. + References No definition available. + Details
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