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.