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Inventory (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Inventory [Line Items]    
Raw Materials $ 4,627 $ 3,434
Work in Process 351 201
Finished Goods 2,112 1,964
Total 7,090 5,599
Inventory, non-current 1,276 1,523
Triferic Inventory    
Inventory [Line Items]    
Inventory, non-current 1,300 1,500
Inventory, additional reserves 606  
Inventory, gross 5,800 4,000
Inventory, reserve $ 25 $ 21