Organization and Description of Business (Narrative) (Details) $ in Millions		12 Months Ended
	Oct. 06, 2021 USD ($)	Dec. 31, 2021 company
Number of partner companies that are publicly traded | company		4
Number of partner companies that have consummated strategic partnerships with industry leaders | company		3
Caelum [Member] | AstraZeneca [Member]
Deconsolidation of consolidated partner company, percentage deconsolidated	100.00%
Deconsolidation of consolidated partner company, upfront payment | $	$ 150
Caelum [Member] | AstraZeneca [Member] | Maximum [Member]
Deconsolidation of consolidated partner company, contingent payment | $	$ 350