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Unrealized Appreciation (Depreciation) and Realized Gains (Losses) on Investments (Tables) | 12 Months Ended
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Dec. 31, 2020
Schedule Of Investments [Abstract] |
Schedule of Unrealized Appreciation (Depreciation) on Investments | The following table sets forth the pre-tax change in the Company’s unrealized appreciation (depreciation) on investments for the three months ended March 31, 2018 under Investment Company Accounting.
(Dollars in thousands) |  | Medallion Loans |  |  | Commercial Loans |  |  | Investments in Subsidiaries |  |  | Equity Investments |  |  | Investments Other Than Securities |  |  | Total |
Balance December 31, 2017 |  | $ | (20,338 | ) |  | $ | (513 | ) |  | $ | 158,920 |  |  | $ | 3,121 |  |  | $ | (1,490 | ) |  | $ | 139,700 |
Net change in unrealized |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Appreciation on investments |  |  | — |  |  |  | — |  |  |  | 38,795 |  |  |  | (998 | ) |  |  | — |  |  |  | 37,797 |
Depreciation on investments |  |  | (38,170 | ) |  |  | 18 |  |  |  | — |  |  |  | — |  |  |  | (1,915 | ) |  |  | (40,067 | )
Reversal of unrealized appreciation (depreciation) related to realized |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gains on investments |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Losses on investments |  |  | 34,747 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 34,747 |
Balance March 31, 2018 |  | $ | (23,761 | ) |  | $ | (495 | ) |  | $ | 197,715 |  |  | $ | 2,123 |  |  | $ | (3,405 | ) |  | $ | 172,177 |
Schedule of Pre-Tax Changes in Unrealized and Realized Gains and Losses in Investment Portfolio | The following table sets forth the pre-tax changes in our unrealized and realized gains and losses in the investment portfolio for the three months ended March 31, 2018 under Investment Company Accounting.
(Dollars in thousands) |  | Three Months Ended March 31, 2018 |
Net change in unrealized appreciation (depreciation) on investments |  |  |  |
Unrealized appreciation |  | $ | (998 | )
Unrealized depreciation |  |  | (38,152 | )
Net unrealized appreciation on investments in Medallion Bank and other controlled subsidiaries |  |  | 29,115 |
Realized gains |  |  | — |
Realized losses |  |  | 34,747 |
Net unrealized losses on investments other than securities and other assets |  |  | (1,915 | )
Total |  | $ | 22,797 |
Net realized gains (losses) on investments |  |  |  |
Realized gains |  | $ | — |
Realized losses |  |  | (34,747 | )
Other gains |  |  | — |
Direct charge-offs |  |  | 2 |
Total |  | $ | (34,745 | )

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- Definition Realized and unrealized gains earned from investments. + References No definition available. + Details
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