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INVESTMENTS (Tables) | 12 Months Ended
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Dec. 31, 2024
INVESTMENTS |
Schedule of amortized cost, gross unrealized gains and losses, allowance for credit losses, and fair value aggregated by major security | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of December 31, 2024 | ​
Investment securities available-for-sale: | ​ | Amortized Cost |  | Gross Unrealized Gain |  | Gross Unrealized Loss | ​ | Allowance For Credit Losses |  | Fair Value | ​
Commercial Paper | ​ | $ | 4,920 | ​ | $ | — | ​ | $ | — | ​ | $ | — | ​ | $ | 4,920 | ​
Corporate Bonds | ​ | ​ | 250 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 250 | ​
U.S. Treasury Securities | ​ | ​ | 5,970 | ​ | ​ | 14 | ​ | ​ | (1) | ​ | ​ | — | ​ | ​ | 5,983 | ​
Total investment securities available-for-sale | ​ | $ | 11,140 | ​ | $ | 14 | ​ | $ | (1) | ​ | $ | — | ​ | $ | 11,153 | ​
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​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of December 31, 2023 | ​
Investment securities available for sale: | ​ | Amortized Cost |  | Gross Unrealized Gain |  | Gross Unrealized Loss | ​ | Allowance For Credit Losses |  | Fair Value | ​
Commercial paper | ​ | $ | 7,169 | ​ | $ | — | ​ | $ | (1) | ​ | $ | — | ​ | $ | 7,168 | ​
U.S. Treasury securities | ​ | ​ | 3,628 | ​ | ​ | — | ​ | ​ | (7) | ​ | ​ | — | ​ | ​ | 3,621 | ​
Total investment securities available for sale | ​ | $ | 10,797 | ​ | $ | — | ​ | $ | (8) | ​ | $ | — | ​ | $ | 10,789 | ​
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Schedule of length of time of gross unrealized losses and fair value of our securities available for sale | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of December 31, 2024
​ | ​ | Less than 12 Months | ​ | 12 Months or Longer | ​ | Total
Investment securities available-for-sale without an allowance for credit losses: | ​ | Fair Value |  | Gross Unrealized Loss |  | Fair Value | ​ | Gross Unrealized Loss |  | Fair Value | ​ | Gross Unrealized Loss
U.S. Treasury Securities | ​ | $ | — | ​ | $ | — | ​ | $ | 600 | ​ | $ | (1) | ​ | $ | 600 | ​ | $ | (1)
Total investment securities available-for-sale | ​ | $ | — | ​ | $ | — | ​ | $ | 600 | ​ | $ | (1) | ​ | $ | 600 | ​ | $ | (1)
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​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of December 31, 2023
​ | ​ | Less than 12 Months | ​ | 12 Months or Longer | ​ | Total
Investment securities available for sale without an allowance for credit losses: | ​ | Fair Value |  | Gross Unrealized Loss |  | Fair Value | ​ | Gross Unrealized Loss |  | Fair Value | ​ | Gross Unrealized Loss
Commercial paper | ​ | $ | 4,472 | ​ | $ | (1) | ​ | $ | — | ​ | $ | — | ​ | $ | 4,472 | ​ | $ | (1)
U.S. Treasury securities | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 2,043 | ​ | ​ | (7) | ​ | ​ | 2,043 | ​ | ​ | (7)
Total investment securities available for sale | ​ | $ | 4,472 | ​ | $ | (1) | ​ | $ | 2,043 | ​ | $ | (7) | ​ | $ | 6,515 | ​ | $ | (8)
Schedule of fair value of our investment securities by major security type and contractual maturity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of December 31, 2024 | ​
​ | ​ | Due in 1 Year or Less |  | Due > 1 Year through 5 Years |  | Due > 5 Years through 10 Years | ​ | Due > 10 Years |  | Total | ​
Fair value of investment securities available-for-sale: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Commercial Paper | ​ | $ | 4,920 | ​ | $ | — | ​ | $ | — | ​ | $ | — | ​ | $ | 4,920 | ​
Corporate Bonds | ​ | ​ | — | ​ | ​ | 250 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 250 | ​
U.S. Treasury Securities | ​ | ​ | 2,678 | ​ | ​ | 3,305 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 5,983 | ​
Total investment securities available-for-sale | ​ | $ | 7,598 | ​ | $ | 3,555 | ​ | $ | — | ​ | $ | — | ​ | $ | 11,153 | ​
Amortized cost of investment securities available-for-sale | ​ | $ | 7,595 | ​ | $ | 3,545 | ​ | $ | — | ​ | $ | — | ​ | $ | 11,140 | ​
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