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BALANCE SHEET DETAILS | 12 Months Ended
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Dec. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
BALANCE SHEET DETAILS | BALANCE SHEETS DETAILS Cash and Cash Equivalents Cash and cash equivalents were as follow (in thousands):
| December 31, 2022 |  | December 31, 2021
Cash | $ | 9,630 |  |  | $ | 51,490 |
Certificates of deposit (1) | 25,604 |  |  | — |
Money market funds | 13,586 |  |  | — |
Cash and cash equivalents | $ | 48,820 |  |  | $ | 51,490 |
(1) Represents certificates of deposit with initial or remaining maturity days of 90 days or less. Investments - Current Investments - current were as follows (in thousands):
| December 31, 2022 |  | December 31, 2021
Certificates of deposit (2) | $ | 5,300 |  |  | $ | — |
U.S. treasury securities | 22,196 |  |  | — |
Marketable securities | 73,422 |  |  | 86,431 |
Short-term investments | $ | 100,918 |  |  | $ | 86,431 |
(2) Represents investments with remaining maturity days between 91 days and one year. Accounts and Other Receivables Accounts and other receivables were as follows (in thousands):
| December 31, 2022 |  | December 31, 2021
Trade accounts receivables | $ | 1,003 |  |  | $ | 1,235 |
Other receivables | 232 |  |  | 735 |
Accounts and other receivables | $ | 1,235 |  |  | $ | 1,970 |
Allowance for credit losses as of December 31, 2022, and December 31, 2021, were not material. Prepaid Expenses and Other Current Assets Prepaid expenses and other current assets were as follows (in thousands):
| December 31, 2022 |  | December 31, 2021
Prepaid expenses | $ | 1,576 |  |  | $ | 798 |
Contract assets - current | 7,671 |  |  | 12,448 |
Other current assets | 100 |  |  | 186 |
Prepaid expenses and other current assets | $ | 9,347 |  |  | $ | 13,432 |
Investments - noncurrent Investments- noncurrent are as follows (in thousands):
| December 31, 2022 |  | December 31, 2021
U.S. treasury securities | $ | 3,602 |  |  | $ | — |
Marketable debt securities | 13,438 |  |  | 7,286 |
Investments- noncurrent | $ | 17,040 |  |  | $ | 7,286 |
Other Assets Other assets are as follows (in thousands):
| December 31, 2022 |  | December 31, 2021
Contract assets - long-term | 545 |  |  | 1,746 |
Lease right-of-use assets | 360 |  |  | 912 |
Other assets | 11 |  |  | 36 |
Total other assets | $ | 916 |  |  | $ | 2,694 |
Other Current Liabilities Other current liabilities are as follows (in thousands):
| December 31, 2022 |  | December 31, 2021
Derivative instruments | $ | 3,649 |  |  | $ | 6,267 |
Lease liabilities - current | 486 |  |  | 1,098 |
Income taxes payable | 2,700 |  |  | 2,057 |
Other current liabilities | 1,418 |  |  | 1,825 |
Total other current liabilities | $ | 12,465 |  |  | $ | 11,247 |

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- Definition The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -URI https://asc.fasb.org/topic&trid=2122208 + Details
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