Acquisitions	9 Months Ended
Acquisitions	Sep. 30, 2022
Business Combination and Asset Acquisition [Abstract]
Acquisitions	Acquisitions Acquisition of Kleo Pharmaceuticals, Inc. On January 4, 2021, the Company acquired Kleo Pharmaceuticals, Inc. (“Kleo”). Kleo is a development-stage biopharmaceutical company focused on advancing the field of immunotherapy by developing small molecules that emulate biologics. The transaction was accounted for as the acquisition of a business using the acquisition method of accounting. The total fair value of the consideration transferred was $20,043 which primarily consisted of the issuance of a total of 115,836 common shares of the Former Parent to Kleo stockholders and contingent consideration in the form of a contingent value right to receive one dollar in cash for each Kleo share if certain specified Kleo biopharmaceutical products or product candidates receive the approval of the Food and Drug Administration (the "FDA") prior to the expiration of 30 months following the effective time of the transaction. The maximum amount payable pursuant to the contingent value right was approximately $17,300. At December 31, 2021, the Company determined the value of the contingent value right to be immaterial and recognized a gain of $1,457 related to the contingent value right in other income (expense) during the fourth quarter of 2021. The value of the contingent value right continues to be immaterial with no value included on the condensed combined balance sheet as of September 30, 2022. Prior to the consummation of the transaction, the Company owned approximately 41.9% of the outstanding shares of Kleo and accounted for it as an equity method investment. As part of the transaction, the Company acquired the remainder of the shares of Kleo, and post-transaction the Company owns 100% of the outstanding shares of Kleo. The carrying value of the Company’s investment in Kleo was $1,176 immediately prior to the acquisition date. The Company determined the fair value of the existing interest was $6,437, and recognized a gain from our equity method investment during the first quarter of 2021 of $5,261 on the condensed combined statements of operations and comprehensive loss as a result of remeasuring to fair value the existing equity interest in Kleo. In connection with the transaction, we recorded: net working capital of $573; property, plant and equipment of $1,257; intangible assets consisting of in progress research and development assets of $18,400 which include an oncology therapeutic candidate entering Phase I clinical trials and a COVID-19 therapeutic candidate in the planning stage for clinical development; debt assumed of $1,577; and goodwill of $1,390. Kleo’s employees, other than its President and Chief Financial Officer, were retained as part of the transaction. In connection with the transaction agreement, the Former Parent filed a registration statement permitting Kleo stockholders to offer and sell the common shares of the Former Parent issued in the transaction. Kv7 Platform Acquisition In April 2022, the Company closed the acquisition from Knopp Biosciences LLC (“Knopp”) of Channel Biosciences, LLC (“Channel”), a wholly owned subsidiary of Knopp owning the assets of Knopp’s Kv7 channel targeting platform (the “Kv7 Platform Acquisition”), pursuant to a Membership Interest Purchase Agreement (the “Purchase Agreement”), dated February 24, 2022. In consideration for the Kv7 Platform Acquisition, on April 4, 2022, the Company made an upfront payment comprised of $35,000 in cash and 493,254 common shares, valued at approximately $58,747, issued through a private placement. The Company has also agreed to pay additional success-based payments comprised of (i) up to $325,000 based on developmental and regulatory milestones through approvals in the United States, EMEA and Japan for the lead asset, BHV-7000 (formerly known as KB-3061), (ii) up to an additional $250,000 based on developmental and regulatory milestones for the Kv7 pipeline development in other indications and additional country approvals, and (iii) up to $562,500 for commercial sales-based milestones of BHV-7000. Additionally, the Company has agreed to make scaled royalty payments in cash for BHV-7000 and the pipeline programs, starting at high single digits and peaking at low teens for BHV-7000 and starting at mid-single digits and peaking at low tens digits for the pipeline programs. The Company accounted for this purchase as an asset acquisition as substantially all of the fair value of the gross assets acquired was concentrated in a single identifiable asset, IPR&D. The IPR&D asset has no alternative future use and relates to intellectual property rights related to the Kv7 platform lead, now BHV-7000. There was no material value assigned to any other assets or liabilities acquired in the acquisition. As such, during the second quarter of 2022, the Company recorded a charge to research and development ("R&D") expense in the accompanying condensed combined statements of operations and comprehensive loss of $93,747. During the nine months ended September 30, 2022, the Company recorded $25,000 to R&D expense in the condensed combined statements of operations and comprehensive loss for a regulatory milestone payment which became due to Knopp during the second quarter. Excluding the milestone payment noted above, the Company has not recorded any of the possible contingent consideration payments to Knopp as a liability in the accompanying condensed combined balance sheet as none of the future events which would trigger a milestone payment were considered probable of occurring at September 30, 2022.