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INVESTMENTS (Tables) | 12 Months Ended
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Dec. 31, 2022
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, 2022 | ​
Investment securities available-for-sale: | ​ | Amortized Cost |  | Gross Unrealized Gain |  | Gross Unrealized Loss | ​ | Allowance For Credit Losses |  | Fair Value | ​
Commercial Paper | ​ | $ | 9,662 | ​ | $ | — | ​ | $ | (2) | ​ | $ | — | ​ | $ | 9,660 | ​
U.S. Treasury Securities | ​ | ​ | 5,249 | ​ | ​ | — | ​ | ​ | (46) | ​ | ​ | — | ​ | ​ | 5,203 | ​
Total investment securities available-for-sale | ​ | $ | 14,911 | ​ | $ | — | ​ | $ | (48) | ​ | $ | — | ​ | $ | 14,863 | ​
​
Schedule of length of time of gross unrealized losses and fair value of our securities available for sale | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of December 31, 2022
​ | ​ | 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 | ​ | $ | 6,464 | ​ | $ | (4) | ​ | $ | — | ​ | $ | — | ​ | $ | 6,464 | ​ | $ | (4)
U.S. Treasury Securities | ​ | ​ | 3,746 | ​ | ​ | (27) | ​ | ​ | 1,457 | ​ | ​ | (19) | ​ | ​ | 5,203 | ​ | ​ | (46)
Total investment securities available-for-sale | ​ | $ | 10,210 | ​ | $ | (31) | ​ | $ | 1,457 | ​ | $ | (19) | ​ | $ | 11,667 | ​ | $ | (50)
​
Schedule of fair value of our investment securities by major security type and contractual maturity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of December 31, 2022 | ​
​ | ​ | 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 | ​ | $ | 9,660 | ​ | $ | — | ​ | $ | — | ​ | $ | — | ​ | $ | 9,660 | ​
U.S. Treasury Securities | ​ | ​ | 3,746 | ​ | ​ | 1,457 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 5,203 | ​
Total investment securities available-for-sale | ​ | $ | 13,406 | ​ | $ | 1,457 | ​ | $ | — | ​ | $ | — | ​ | $ | 14,863 | ​
Amortized cost of investment securities available-for-sale | ​ | $ | 13,434 | ​ | $ | 1,477 | ​ | $ | — | ​ | $ | — | ​ | $ | 14,911 | ​
​

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