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INVESTMENT SECURITIES (Tables) | 3 Months Ended
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Mar. 31, 2023
INVESTMENT SECURITIES |
Schedule of marketable securities | The Company’s available-for-sale securities as of March 31, 2023 and December 31, 2022 are summarized below (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Cost |  | Unrealized Gains in Investment Income |  | Unrealized Losses in Investment Income |  | Estimated Fair Value (Level 1 Inputs)
March 31, 2023 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Common Stock | ​ | $ | 20,482 | ​ | $ | — | ​ | $ | (1,820) | ​ | $ | 18,662
Operating Units | ​ | ​ | 23,253 | ​ | ​ | — | ​ | ​ | (2,656) | ​ | ​ | 20,597
Total Equity Securities | ​ | ​ | 43,735 | ​ | ​ | — | ​ | ​ | (4,476) | ​ | ​ | 39,259
Total Available-for-Sale Securities | ​ | $ | 43,735 | ​ | $ | — | ​ | $ | (4,476) | ​ | $ | 39,259
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
December 31, 2022 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Common Stock | ​ | $ | 18,382 | ​ | $ | 308 | ​ | $ | — | ​ | $ | 18,690
Operating Units | ​ | ​ | 23,253 | ​ | ​ | 98 | ​ | ​ | — | ​ | ​ | 23,351
Total Equity Securities | ​ | ​ | 41,635 | ​ | ​ | 406 | ​ | ​ | — | ​ | ​ | 42,041
Total Available-for-Sale Securities | ​ | $ | 41,635 | ​ | $ | 406 | ​ | $ | — | ​ | $ | 42,041

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- Definition Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets. + References No definition available. + Details
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