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Investments | 12 Months Ended
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Dec. 31, 2019
Investments [Abstract] |
Investments | 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 |  | 3,970 |  |  | 3,048 |
Total investments |  | $ | 8,375 |  |  | $ | 7,162 |
Our investments do not trade in public markets, thus they do not have readily determinable fair values. We estimate the fair values of the investments to approximate their carrying values at December 31, 2019 and 2018.

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