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CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS | 3 Months Ended
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Mar. 31, 2023
Investments, Debt and Equity Securities [Abstract] |
CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS | CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS Short-term investments include investments in U.S. treasury notes. Short-term investments with original maturities of approximately three months or less from the date of purchase are classified within cash and cash equivalents. Debt investments with original maturities at the date of purchase greater than approximately three months but less than one year are classified as short-term investments, as they represent the investment of cash available for current operations. All short-term investments that the company holds are classified as "held-to-maturity". The Company has accounted for and disclosed the purchase of its short-term investments in accordance with ASC 320 ("Investments - Debt Securities"). The following table summarizes the fair value of cash and cash equivalents, and short-term investments as well as any gross unrealized holding gains and losses as of March 31, 2023. Due to the nature of these assets and the short-term nature of the U.S. treasury notes being held to maturity, both these cash and cash equivalents and short-term investments fall under the Level 1 fair value hierarchy as referenced in Note 2.
| As of March 31, 2023
Amortized cost |  | Gross unrealized holding gains |  | Gross unrealized holding losses |  | Estimated fair value
Cash and cash equivalents | $ | 5,355 |  |  | $ | — |  |  | $ | — |  |  | $ | 5,355 |
U.S. treasury notes (1) | 4,881 |  | 45 |  |  | (2) |  |  | 4,924
Total cash, cash equivalents and short-term investments | $ | 10,236 |  |  | $ | 45 |  |  | $ | (2) |  |  | $ | 10,279 |
(1) These U.S. treasury notes are classified as "held-to-maturity" as they were purchased in December 2022 and mature in July 2023. Since these securities are intended to be held until maturity and mature in less than a year from its purchase date, any unrealized gains or losses are not realized until its maturity date and the amortized cost of these securities can be found on this Form 10-Q's balance sheet under Current Assets - "Short-term investments". Any coupon payments from these short-term investments fall under "Interest and other (expense) income" on the Company's Statement of Operations. The Company did not hold any securities that were in an unrealized loss position for more than 12 months as of March 31, 2023 and 2022. There were no material realized gains or losses on these short-term investments during the quarters ended March 31, 2023 and March 31, 2022.

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- Definition The entire disclosure of the components of cash, cash equivalents, and short-term investments. Short-term investments may include current marketable securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI https://asc.fasb.org/topic&trid=2196928 + Details
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