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Subsequent Event
 12 Months Ended
Dec. 31, 2022
Subsequent Events [Abstract]  
Subsequent Event

(11) Subsequent Event

The Company and Christopher D. Ozeroff, the Secretary, Senior Vice President and General Counsel of ARCA have mutually agreed to conclude Mr. Ozeroff’s employment effective March 31, 2023. Pursuant to Mr. Ozeroff's existing employment agreement, as previously amended, ARCA will provide Mr. Ozeroff severance benefits pursuant to the terms of his existing employment agreement with the Company, as previously amended. The severance benefits include severance payments and reimbursement to cover out-of-pocket costs to continue group health insurance benefits under COBRA, whether he elects or is eligible to receive COBRA (provided, that even if he does not elect or is not eligible to receive COBRA, he will receive the equivalent of such out-of-pocket expenses paid by him not to exceed the costs that the benefits would equal under COBRA if he were so eligible) and will be recorded in the first quarter of 2023. The severance benefits are conditioned on the execution by Mr. Ozeroff of a legal release of claims.