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Investments (Tables) | 12 Months Ended
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Dec. 31, 2019
Investments [Abstract] |
Schedule of investments | Investments consisted of the following:
|  | As of December 31,
(in thousands) |  | 2019 |  | 2018
Investments held at cost |  | $ | 4,405 |  |  | $ | 4,114 |
Equity method investments |  | 4,148 |  |  | 3,048 |
Total investments |  | $ | 8,553 |  |  | $ | 7,162 |

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