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Summary of Significant Accounting Policies Accrued Liabilities (Details) - USD ($) | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Accrued Liabilities [Line Items] |  |
Accrued research and development services current | $ 3,937,000 | $ 3,252,000
Accrued compensation and benefits current | 4,348,000 | 7,830,000
Operating Lease, Liability, Current | (1,291,000) | (1,291,000)
Other Accrued Liabilities, Current | 484,000 | 404,000
Accrued Liabilities | $ 10,060,000 | $ 12,777,000

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- Definition Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 + Details
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