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Investments
12 Months Ended
Dec. 31, 2021
Investments [Abstract]  
Investments Investments
Investments consisted of the following:
 As of December 31,
(in thousands)20212020
Investments held at cost$15,431 $4,564 
Equity method investments6,201 9,840 
Total investments$21,632 $14,404 
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, 2021 and 2020.