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Investments | 12 Months Ended
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Dec. 31, 2022
Investments [Abstract] |
Investments | Investments Investments consisted of the following:
|  | As of December 31,
(in thousands) |  | 2022 |  | 2021
Investments held at cost |  | $ | 20,890 |  |  | $ | 15,431 |
Equity method investments |  | 2,254 |  |  | 6,201 |
Total investments |  | $ | 23,144 |  |  | $ | 21,632 |
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, 2022 and 2021.

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- Definition The entire disclosure for investment. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 321 -URI https://asc.fasb.org/topic&trid=75115024 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI https://asc.fasb.org/topic&trid=2196928 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 325 -URI https://asc.fasb.org/topic&trid=2197064 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -URI https://asc.fasb.org/topic&trid=2196965 + Details
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