Summary of Significant Accounting Policies - Additional Information (Details)	6 Months Ended
	Jun. 30, 2022
ASU 2020-06
Summary Of Significant Accounting Policies [Line Items]
Change in Accounting Principle, Accounting Standards Update, Adopted	true
Change in Accounting Principle, Accounting Standards Update, Adoption Date	Jan. 01, 2022
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect	false
Allena Pharmaceuticals Ireland Limited
Summary Of Significant Accounting Policies [Line Items]
Entity incorporated date	2017-03
Subsidiaries
Summary Of Significant Accounting Policies [Line Items]
Entity incorporated date	2014-12