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INVESTMENTS (Tables) | 6 Months Ended
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Jun. 30, 2021
Equity Method Investments and Joint Ventures [Abstract] |
Summary of Investments | The following table summarizes investments as of June 30, 2021 and December 31, 2020 (dollars in thousands):
| June 30, 2021 |  | Percent Ownership of Voting Stock |  | December 31, 2020 |  | Percent Ownership of Voting Stock
Other equity investments | $ | 36,472 |  |  | 1% | to | 19% |  | $ | 37,671 |  |  | 1% | to | 19%
Available-for-sale securities - redeemable preferred shares (1) | — |  |  | 19% | to | 25% |  | — |  |  | 19% | to | 25%
Fair value option investments (1) | — |  |  | 10% | to | 19% |  | — |  |  | 10% | to | 19%
Total investments | $ | 36,472 |  |  |  |  |  |  | $ | 37,671 |  |  |  |  |
(1)We hold available-for-sale securities and fair value option investments in various entities that were written down to zero prior to December 31, 2020. During the first quarter 2020, we recognized a $1.4 million loss from changes in the fair value of our fair value option investments.

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