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Additions and Returns of Product Rights - Narrative (Details) - USD ($)
 1 Months Ended 3 Months Ended
Jan. 03, 2022
Nov. 30, 2018
Nov. 30, 2016
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Jul. 12, 2022
Dec. 31, 2021
Jul. 31, 2020
Business Acquisition [Line Items]                  
Payment to acquire business upon closing       $ 0 $ 13,500,000        
Goodwill       914,000   $ 914,000      
Kyowa Kirin | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement                  
Business Acquisition [Line Items]                  
Upfront payment $ 13,500,000                
Sales milestone payments, maximum $ 3,500,000                
Sales milestone payments, expected       1,500,000          
Sales milestone payments       1,000,000          
Kyowa Kirin | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement | Maximum                  
Business Acquisition [Line Items]                  
Tiered royalty, percent 10.00%                
Nordic Group B.V. | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement                  
Business Acquisition [Line Items]                  
Milestone payment receivable             $ 1,000,000    
Milestone payment credit due             $ 1,000,000    
Nordic Group B.V. | Restricted Stock | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement                  
Business Acquisition [Line Items]                  
Restricted shares receivable (in shares)             180,000    
Vibativ                  
Business Acquisition [Line Items]                  
Payment to acquire business upon closing   $ 20,000,000              
Other Payments to Acquire Businesses   $ 5,000,000              
Percentage of tiered royalty payments (up to)   20.00%              
Tiered royalty payment, threshold   $ 2,500,000              
Additional liability       4,085,554   4,154,823      
Current portion of the contingent consideration liability       1,200,000          
Noncurrent portion of the contingent consideration liability       2,900,000          
Methotrexate                  
Business Acquisition [Line Items]                  
Payment to acquire business upon closing     $ 100,000            
Additional liability               $ 1,000,000 $ 1,000,000
Liability recorded     $ 900,000            
Vested common stock, value       900,000          
Methotrexate | Restricted Stock                  
Business Acquisition [Line Items]                  
Unvested restricted shares (in shares)     180,000            
Sancuso                  
Business Acquisition [Line Items]                  
Other Payments to Acquire Businesses $ 1,700,000                
Additional liability 3,400,000     2,500,000   $ 3,000,000      
Current portion of the contingent consideration liability       1,300,000          
Noncurrent portion of the contingent consideration liability       $ 1,200,000          
Prepaid expenses 1,800,000                
Inventory 2,600,000                
Goodwill 30,000.00                
Intangible assets $ 14,100,000