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Basis of Presentation and Summary of Significant Accounting Policies (Details Narrative) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Dec. 31, 2020
Subsidiary, Sale of Stock [Line Items] |  |
Impairment charge on goodwill and intangible asset |  |
Impairment charge for long-lived assets |  |
Marketable equity securities, fair market value | $ 887 | $ 675
Lineage Cell Therapeutics, Inc [Member] |  |
Subsidiary, Sale of Stock [Line Items] |  |
Shares held as available-for-sale securities, shares | 353,264 | 353,264
Marketable equity securities, fair market value | $ 887 | $ 675
Pharma Services [Member] |  |
Subsidiary, Sale of Stock [Line Items] |  |
Accounts receivable | 300 |
Medicare for DetermaRx and Medicare Advantage for DetermaRx [Member] |  |
Subsidiary, Sale of Stock [Line Items] |  |
Accounts receivable | $ 400 |

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