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Inventories
9 Months Ended
Sep. 30, 2023
Inventory Disclosure [Abstract]  
Inventories Inventories
The principal categories of inventories at September 30, 2023 were comprised of the following:

Inventory:
September 30, 2023
Raw materials and supplies$2,591 
Work in process299
Finished goods2,396 
Total$5,286 

The Company had no capitalized inventories at December 31, 2022. The Company capitalizes inventory costs associated with products when future commercialization is considered probable and the future economic benefit is expected to be realized, which is typically when regulatory approval is obtained for a drug candidate. As such, the Company began capitalizing costs related to inventory in May 2023 upon FDA approval of LUMRYZ. Manufacturing costs associated with inventory purchased or produced prior to FDA approval were recorded as research and development expense in prior periods.