Related Parties (Details Narrative) - USD ($)			1 Months Ended						3 Months Ended		9 Months Ended		12 Months Ended
	Dec. 07, 2022	Oct. 05, 2022	Aug. 31, 2023	Dec. 31, 2022	Oct. 31, 2022	Aug. 31, 2021	Mar. 31, 2021	Jul. 31, 2019	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Related Party Transaction [Line Items]
Issuance of common stock, value									$ 1,684,000		$ 3,740,000
Total revenue									417,000	$ 399,000	21,146,000	$ 1,878,000
Capitalized contract costs				$ 2,100,000					$ 0		$ 0		$ 2,100,000
Common stock, par value				$ 0.0001					$ 0.0001		$ 0.0001		$ 0.0001
Proceeds from issuance of common stock, net											$ 3,794,000
Securities Purchase Agreement [Member]
Related Party Transaction [Line Items]
Issuance of common stock in registered direct offering, net of issuance costs, shares	5,168,732	1,800,000		5,168,732		1,300,000	1,037,405
Common stock, par value	$ 0.0001	$ 0.0001		$ 0.0001			$ 0.0001						0.0001
Shares issued, price per share	$ 0.938	$ 1.11		$ 0.94									$ 0.94
Proceeds from issuance of common stock, net	$ 4,850,000	$ 8,000,000	$ 1,700,000	$ 5,000,000.0	$ 7,900,000	$ 22,600,000	$ 6,400,000
License [Member]
Related Party Transaction [Line Items]
Total revenue											19,602,000
Serum International BV [Member]
Related Party Transaction [Line Items]
Issuance of common stock in registered direct offering, net of issuance costs, shares								801,820
Issuance of common stock, value								$ 10,000,000
Serum International BV [Member] | License [Member]
Related Party Transaction [Line Items]
Total revenue											19,600,000
Capitalized contract costs									2,100,000		2,100,000
Shenzen Hepalink Pharmaceutical Group Co Ltd [Member]
Related Party Transaction [Line Items]
Increase (Decrease) in Operating Liabilities									$ 0	$ 0	0	$ 0
Shenzen Hepalink Pharmaceutical Group Co Ltd [Member] | Other Receivables [Member]
Related Party Transaction [Line Items]
Increase (Decrease) in Operating Liabilities											$ 6,000		$ 33,000