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Subsequent Event	9 Months Ended
Subsequent Event	Sep. 30, 2023
Subsequent Events [Abstract]
Subsequent Event	Subsequent Events On October 23, 2023, certain entities affiliated with Baker Bros. Advisors LP (the “Baker Entities”) net exercised the remaining balance of the pre-funded warrants held by such Baker Entities that were issued on November 21, 2019. Additionally, certain of the Baker Entities net exercised all of the pre-funded warrants that were issued on June 1, 2020. The exercises resulted in the issuance of 14,997 common shares. Following the exercises, there are no outstanding warrants. On November 3, 2023, the Company announced that it entered into a license agreement (the “Clearside Agreement”) with Clearside Biomedical, Inc. (“Clearside”), enabling the Company to develop its investigational plasma kallikrein inhibitor, avoralstat, with Clearside’s SCS Microinjector® to deliver avoralstat directly to the back of the eye through the suprachoroidal space to treat patients with diabetic macular edema. Under the Clearside Agreement, Clearside will receive a $5,000 upfront license fee from the Company. Clearside is eligible to receive up to an additional $30,000 in clinical and regulatory milestone payments, and up to a total of $47,500 in three post-approval sales-based milestone payments as annual global net sales progress to $2,000,000. The Company will pay Clearside tiered mid-single digit royalties on annual global net product sales, at three tiers, including a top tier of >$1,500,000.