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Subsequent Event	12 Months Ended
	Dec. 31, 2022
Subsequent Event [Abstract]
Subsequent Events	17) Subsequent Event Cell Customization and License Agreement On February 21, 2023, the Company and Lineage Cell Therapeutics, Inc. (“Lineage”) entered into an exclusive option and license agreement (the “Lineage Agreement”), pursuant to which, Lineage may request prior to August 22, 2023 that the Company develops for, and delivers to, Lineage certain induced pluripotent stem cell lines, which Lineage would use to evaluate the possible development of cell transplant therapies for treatment of diseases of the central nervous system in humans, excluding ophthalmologic indications, (b) diseases and conditions of the peripheral nervous system, (c) psychiatric, respiratory, musculoskeletal, and hematological diseases, disorders, and conditions, and (d) cancer.  The Lineage Agreement also provides Lineage with the option to obtain an exclusive sublicense to certain related technology for preclinical, clinical and commercial purposes, which would permit Lineage to sublicense such intellectual property, subject to payment of certain sublicense royalty fees.  Lineage has six months from our delivery to Lineage of such induced pluripotent stem cell lines to exercise such option, and upon any such exercise, Lineage would agree to use its commercially reasonable efforts to exploit and make commercially available one or more licensed products derived from such induced pluripotent stem cell lines in accordance with the Lineage Agreement. Upon entry into the Lineage Agreement, Lineage paid the Company a $250,000 non-refundable up-front payment.  We are also entitled to certain cell line customization fees with respect to cell lines that Lineage may request that we develop for Lineage, and royalty payments with respect to any such licensed products, certain sublicense fees and certain milestone payments under the Lineage Agreements.

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- Definition

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI https://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

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