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INVESTMENT SECURITIES (Tables) | 12 Months Ended
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Dec. 31, 2022
INVESTMENT SECURITIES |
Schedule of marketable securities | ​ The Company’s available-for-sale securities as of December 31, 2022 and 2021 are summarized below (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Cost |  | Unrealized Gains in Investment Income |  | Unrealized Losses in Investment Income |  | Estimated Fair Value (Level 1 Inputs)
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
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
December 31, 2021 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Common Stock | ​ | $ | 15,643 | ​ | $ | 868 | ​ | $ | — | ​ | $ | 16,511
Operating Units | ​ | ​ | 23,253 | ​ | ​ | 1,273 | ​ | ​ | — | ​ | ​ | 24,526
Total Equity Securities | ​ | ​ | 38,896 | ​ | ​ | 2,141 | ​ | ​ | — | ​ | ​ | 41,037
Total Available-for-Sale Securities | ​ | $ | 38,896 | ​ | $ | 2,141 | ​ | $ | — | ​ | $ | 41,037

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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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