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Investments
 12 Months Ended
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
 
4,148

 
3,048

Total investments
 
$
8,553

 
$
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.