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Cash Equivalents | 6 Months Ended
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Jun. 30, 2022
Cash and Cash Equivalents [Abstract] |
Cash Equivalents | Cash Equivalents The following is a summary of cash equivalents (in thousands):
June 30, 2022 |  | Cost Basis |  | Unrealized Holding Gains |  | Estimated Market Value
Cash equivalents: |  |  |  |  |  |
Money market funds |  | $ | 10,025 |  |  | $ | — |  |  | $ | 10,025 |
Total assets |  | $ | 10,025 |  |  | $ | — |  |  | $ | 10,025 |
December 31, 2021 |  | Cost Basis |  | Unrealized Holding Gains |  | Estimated Market Value
Cash equivalents: |  |  |  |  |  |
Money market funds |  | $ | 10,015 |  |  | $ | — |  |  | $ | 10,015 |
Total assets |  | $ | 10,015 |  |  | $ | — |  |  | $ | 10,015 |
There were no gross realized gains or losses on cash equivalents for the three and six months ended June 30, 2022 and 2021.

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- References No definition available. + Details
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- Definition The entire disclosure of cash, cash equivalents, and debt and equity securities, including any unrealized or realized gain (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI http://asc.fasb.org/topic&trid=2196928 + Details
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