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FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables) | 3 Months Ended
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Mar. 31, 2026
FAIR VALUE OF FINANCIAL INSTRUMENTS |
Schedule of fair value of values of assets designated as Investments in equity securities | The Company considers any potential impairment of property, plant, and equipment, including construction in progress, to be a Level 3 fair value measurement. ​ The following tables summarize the values of assets designated as Investments in debt and equity securities: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, 2026
​ | ​ ​ ​ | Level 1 | ​ ​ ​ | Level 2 | ​ ​ ​ | Level 3 | ​ ​ ​ | Total
Equity securities | ​ | $ | 12,267,346 | ​ | $ | — | ​ | $ | — | ​ | $ | 12,267,346
Mutual funds | ​ | $ | 19,984,891 | ​ | $ | — | ​ | $ | — | ​ | $ | 19,984,891
Municipal bonds | ​ | ​ | 599,791 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 599,791
​ | ​ | $ | 32,852,028 | ​ | $ | — | ​ | $ | — | ​ | $ | 32,852,028
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2025
​ | ​ ​ ​ | Level 1 | ​ ​ ​ | Level 2 | ​ ​ ​ | Level 3 | ​ ​ ​ | Total
Mutual funds | ​ | ​ | 33,774,204 | ​ | $ | — | ​ | $ | — | ​ | $ | 33,774,204
Municipal bonds | ​ |  | 608,604 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 608,604
​ | ​ | $ | 34,382,808 | ​ | $ | — | ​ | $ | — | ​ | $ | 34,382,808
​
Schedule of gross unrealized gains (losses) on investments in equity securities | The investment assets are held as trading securities and are carried at fair value as of the date of the Condensed Balance Sheets. The Company intends to hold these assets for possible future operating requirements. The following table summarizes gross unrealized gains and losses from Investments in debt and equity securities: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, 2026
​ | ​ | ​ | ​ | ​ | Cumulative Unrealized | ​ | Aggregate
​ | ​ ​ ​ | Cost | ​ ​ ​ | Gains | ​ ​ ​ | Losses | ​ ​ ​ | Fair Value
Equity securities | ​ | $ | 12,046,003 | ​ | $ | 221,343 | ​ | $ | — | ​ | $ | 12,267,346
Mutual funds | ​ | $ | 19,925,881 | ​ | $ | 59,010 | ​ | $ | — | ​ | $ | 19,984,891
Municipal bonds | ​ | ​ | 582,865 | ​ | ​ | 16,926 | ​ | ​ | — | ​ | ​ | 599,791
​ | ​ | $ | 32,554,749 | ​ | $ | 297,279 | ​ | $ | — | ​ | $ | 32,852,028
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2025
​ | ​ | ​ | ​ | ​ | Cumulative Unrealized | ​ | Aggregate
​ | ​ ​ ​ | Cost | ​ ​ ​ | Gains | ​ ​ ​ | Losses | ​ ​ ​ | Fair Value
Mutual funds | ​ | ​ | 33,695,124 | ​ | $ | 79,080 | ​ | ​ | — | ​ | ​ | 33,774,204
Municipal bonds | ​ |  | 582,289 | ​ | ​ | 26,315 | ​ | ​ | — | ​ | ​ | 608,604
​ | ​ | $ | 34,277,413 | ​ | $ | 105,395 | ​ | $ | — | ​ | $ | 34,382,808
​ Unrealized gains (losses) on investments in debt and equity securities were $192 thousand and $(7.2) million for the three months ended March 31, 2026 and 2025, respectively.

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