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OTHER INCOME (Tables) | 6 Months Ended
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Jun. 30, 2017
Other Income and Expenses [Abstract] |
Other Income [Table Text Block] | Other income consisted of the following for the periods set forth below (amounts in thousands):
| Three months ended |  | Six months ended
| June 30, |  | June 30,
| 2017 |  | 2016 |  | 2017 |  | 2016
Interest income | $ | 801 |  |  | $ | 842 |  |  | $ | 1,774 |  |  | $ | 1,253 |
Equity investment income | 530 |  |  | 1,086 |  |  | 1,350 |  |  | 1,583 |
Investment gain (loss) related to investments for deferred compensation | 497 |  |  | (291 | ) |  | 1,347 |  |  | (508 | )
Building rental income | 595 |  |  | 609 |  |  | 1,195 |  |  | 971 |
Discount amortization on prepaid royalty | 181 |  |  | 320 |  |  | 509 |  |  | 779 |
Gain (loss) on sale of assets | 70 |  |  | — |  |  | (192 | ) |  | 2,342 |
Other income (expense) | (466 | ) |  | 483 |  |  | (626 | ) |  | 534 |
| $ | 2,208 |  |  | $ | 3,049 |  |  | $ | 5,357 |  |  | $ | 6,954 |

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- Definition Tabular disclosure of the components of non-operating income or non-operating expense that may include amounts earned from dividends, interest on securities, gains (losses) on securities sold, equity earnings of unconsolidated affiliates, net gain (loss) on sales of business, interest expense and other miscellaneous income or expense items. + References No definition available. + Details
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