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RESTRICTED CASH AND MARKETABLE SECURITIES | 12 Months Ended
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Dec. 31, 2022
Cash and Cash Equivalents [Abstract] |
RESTRICTED CASH AND MARKETABLE SECURITIES | RESTRICTED CASH AND MARKETABLE SECURITIES The Company's short-term restricted cash balance as of December 31, 2022 was $21.0 million. This represents the settlement amount of the Securities Litigation (as defined below in Note 11. “Commitment and Contingencies”), including the insurance carriers' coverage, which was funded into an escrow account in the fourth quarter of 2022. On January 31, 2023, the court issued an order granting final approval of the settlement of the Securities Litigation. Accordingly, this matter is now resolved. The following table sets forth the composition of the Company’s marketable securities:
| December 31, 2022
| Amortized Cost |  | Unrealized Gains |  | Unrealized Losses |  | Fair Value
US government securities | $ | 49,939 |  |  | $ | — |  |  | $ | (508) |  |  | $ | 49,431 |
US treasury securities | 4,973 |  |  | — |  |  | (38) |  |  | 4,935 |
Total Marketable Securities | $ | 54,912 |  |  | $ | — |  |  | $ | (546) |  |  | $ | 54,366 |
The Company had no marketable securities as of December 31, 2021

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- Definition The entire disclosure for cash and cash equivalent footnotes, which may include the types of deposits and money market instruments, applicable carrying amounts, restricted amounts and compensating balance arrangements. Cash and equivalents include: (1) currency on hand (2) demand deposits with banks or financial institutions (3) other kinds of accounts that have the general characteristics of demand deposits (4) short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments maturing within three months from the date of acquisition qualify. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(1)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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