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Consolidated Financial Statements Detail - Equity Securities (Details) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2019
Equity Securities |  |  |  |  |  |
Equity securities | $ 531,000 |  | $ 531,000 |  | $ 681,000 | [1]
Change in fair value of equity securities |  |  | (150,000) | $ 746,000 |  |
Rezolute |  |  |  |  |  |
Equity Securities |  |  |  |  |  |
Equity securities | 500,000 |  | 500,000 |  | $ 700,000 |
Change in fair value of equity securities | $ 100,000 | $ 31,000 | $ (200,000) | $ 700,000 |  |
[1] | The consolidated balance sheet as of December 31, 2019 has been derived from the audited consolidated financial statements as of that date included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019.

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