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Leases - Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Leases
Total Lease Cost	$ 230	$ 243
Research and Development Expense
Leases
Fixed lease cost	176	176
Amortization of lease assets	30	38
General and Administrative Expense
Leases
Fixed lease cost	19	19
Interest Expense
Leases
Interest on lease liabilities	$ 5	$ 10

X

- Definition

Amount of interest expense on finance lease liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918686-209980

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-Publisher FASB
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X

- Definition

Amount of amortization expense attributable to right-of-use asset from finance lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
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-URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918686-209980

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- Definition

Amount of lease cost recognized by lessee for lease contract.

+ References

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-Publisher FASB
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-Topic 842
-SubTopic 20
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+ References

No definition available.

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X

- Definition

Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
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