Restructuring costs	12 Months Ended
Dec. 31, 2022
Restructuring and Related Activities [Abstract]
Restructuring costs	18. Restructuring costs We restructured the business of Cutanea and incurred restructuring costs which are subsequently reimbursed by Maruho. Restructuring costs primarily relate to the winding down of Cutanea’s operations. There were no restructuring costs for the year ended December 31, 2022. For the year ended December 31, 2021, restructuring costs were incurred in the amount of $0.8 million, of which $0.5 million had been reimbursed in 2021.

The entire disclosure for restructuring and related activities. Description of restructuring activities such as exit and disposal activities, include facts and circumstances leading to the plan, the expected plan completion date, the major types of costs associated with the plan activities, total expected costs, the accrual balance at the end of the period, and the periods over which the remaining accrual will be settled.

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