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INVESTMENTS - Narrative (Details) $ in Thousands | 4 Months Ended | 8 Months Ended | 12 Months Ended
--- | --- | --- | ---
May 01, 2019 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2021 USD ($) investment company | Dec. 31, 2020 USD ($) company investment
Schedule of Investments [Line Items] |  |  |  |
Investment made in exchange for services |  |  | $ 17,500 | $ 15,000
Trade and barter revenues | $ 1,072,775 | $ 2,608,862 | $ 3,556,906 | $ 2,946,124
Number of investments made in private companies | company |  |  | 7 | 7
Number of investments accounted for under equity method of accounting | investment |  |  | 1 | 1
Number of investments accounted for under cost method | investment |  |  | 3 | 2
Number of investments accounted for as notes receivable convertible into equity | investment |  |  | 3 | 4
Impairment of investments |  |  | $ 8,700 | $ 5,700
Trade and Barter Transactions |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Investment made in exchange for services | 5,900 | 13,000 | 16,300 | 10,500
Trade and barter revenues | $ 65,934 | $ 151,497 | $ 175,519 | $ 158,383

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