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Award from regenerative medicine institute.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3536-108585

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California Institute For Regenerative Medicine Award (Details) $ in Millions		1 Months Ended			9 Months Ended
	Apr. 05, 2018 USD ($) Disbursement	Jun. 30, 2019	Sep. 30, 2018 USD ($)	Apr. 30, 2018 USD ($)	Sep. 30, 2018
Award from regenerative medicine institute
Period to treat award as grant, if award not treated as loan					10 years
California Institute for Regenerative Medicine
Award from regenerative medicine institute
Receipt of first disbursement under the Award \| $				$ 1.0
Receipt of additional disbursement under the Award \| $			$ 1.1
California Institute for Regenerative Medicine \| LIBOR \| Scenario, Forecast
Award from regenerative medicine institute
Award considered as a loan, interest rate		7.00%
California Institute for Regenerative Medicine \| Loan Repayment Period One \| Scenario, Forecast
Award from regenerative medicine institute
Repayment percentage of award amount		60.00%
California Institute for Regenerative Medicine \| Loan Repayment Period Two \| Scenario, Forecast
Award from regenerative medicine institute
Repayment percentage of award amount		80.00%
California Institute for Regenerative Medicine \| Loan Repayment Period Three \| Scenario, Forecast
Award from regenerative medicine institute
Repayment percentage of award amount		100.00%
California Institute for Regenerative Medicine \| Loan Repayment Period Four \| Scenario, Forecast
Award from regenerative medicine institute
Repayment percentage of award amount		100.00%
California Institute for Regenerative Medicine \| FT516
Award from regenerative medicine institute
Award agreement executed date	Apr. 05, 2018
Award for first-in-human clinical trial \| $	$ 4.0
Number of disbursements \| Disbursement	5
Number of disbursement receivable upon the execution of the award \| Disbursement	1
Number of disbursements receivable based on completion of certain operating milestones \| Disbursement	4
Estimated project start date	Apr. 01, 2018
Estimated project end date	Jun. 30, 2019