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Financial Instruments (Details) - Recurring - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Summary of assets measured at fair value on a recurring basis |  |
Total assets | $ 40,853 | $ 42,999
Level 1 |  |
Summary of assets measured at fair value on a recurring basis |  |
Total assets | 1,853 | 22,999
Level 2 |  |
Summary of assets measured at fair value on a recurring basis |  |
Total assets | 39,000 | 20,000
Money market funds |  |
Summary of assets measured at fair value on a recurring basis |  |
Cash and cash equivalents | 1,853 | 22,999
Money market funds | Level 1 |  |
Summary of assets measured at fair value on a recurring basis |  |
Cash and cash equivalents | 1,853 | 22,999
Reverse repurchase agreements |  |
Summary of assets measured at fair value on a recurring basis |  |
Short-term investments | 39,000 | 20,000
Reverse repurchase agreements | Level 2 |  |
Summary of assets measured at fair value on a recurring basis |  |
Short-term investments | $ 39,000 | $ 20,000

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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes 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. + References No definition available. + Details
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- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
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