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v3.22.1

Fair Value (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Assets |  |
Short-term investments | $ 5,087 | $ 5,798
Marketable equity securities | 1,307 | 1,620
Vendetta warrants | 3 | 49
Level 1 |  |
Assets |  |
Short-term investments | 5,087 | 5,798
Marketable equity securities | 1,307 | 1,620
Vendetta warrants | 0 | 0
Level 2 |  |
Assets |  |
Short-term investments | 0 | 0
Marketable equity securities | 0 | 0
Vendetta warrants | 3 | 49
Level 3 |  |
Assets |  |
Short-term investments | 0 | 0
Marketable equity securities | 0 | 0
Vendetta warrants | $ 0 | $ 0

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- Definition The fair value as of the balance sheet date of firm holdings in corporate stocks (common and preferred), stock options, warrants and any other financial instrument which represents, or provides the ability to obtain, ownership rights in a corporation. Includes both pledged (to counterparties as collateral for financing transactions) and unpledged holdings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35711157&loc=d3e42546-110969 + Details
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