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Business, basis of presentation, new accounting standards and summary of significant accounting policies - Additional Information (Details)
$ / shares in Units, $ in Thousands
Dec. 30, 2022
USD ($)
Dec. 04, 2022
USD ($)
May 06, 2022
$ / shares
shares
Apr. 14, 2022
USD ($)
Mar. 31, 2023
$ / shares
shares
Dec. 31, 2022
USD ($)
$ / shares
shares
May 05, 2022
shares
Business Basis Of Presentation New Accounting Standards And Summary Of Significant Accounting Policies [Line Items]              
Common Stock, Par or Stated Value Per Share | $ / shares     $ 0.001   $ 0.001 $ 0.001  
Purchase of transferred assets and grant of licenses cash payment $ 140,000            
Acquisition of net working capital 12,100            
Cash received for prepaid royalties 1,000            
Restricted cash           $ 11,250  
Reverse stock split, description     outstanding Common Stock were split at a ratio of 50-for-1        
Reverse stock split, conversion ratio     0.02        
Number of authorized shares of common stock | shares     12,000,000   12,000,000 12,000,000 600,000,000
VitaCare Divestiture [Member]              
Business Basis Of Presentation New Accounting Standards And Summary Of Significant Accounting Policies [Line Items]              
Proceeds from sale of business, net of transaction costs       $ 142,600      
Transaction costs       7,200      
Gain on sale of business       143,400      
VitaCare Divestiture [Member] | Maximum [Member]              
Business Basis Of Presentation New Accounting Standards And Summary Of Significant Accounting Policies [Line Items]              
Contingent cash consideration from sale of business       7,000      
Mayne License Agreement [Member]              
Business Basis Of Presentation New Accounting Standards And Summary Of Significant Accounting Policies [Line Items]              
Period of royalty payments   20 years          
Decrease in royalty rate on product-by-product basis   2.00%          
Minimal annual royalty payment   $ 3,000          
Period of minimal annual royalty payment   12 years          
Inflation rate adjusted for minimal annual royalty payment   3.00%          
Prepaid royalty liabilities 1,000            
Quarterly royalty payment $ 257            
Quarterly royalty payment, interest per annum 19.00%            
Royalty payment payable under long term service agreement $ 1,500            
Cash received in acquire businesses 140,000            
Proceeds from acquire businesses net of working capital adjustments $ 12,100            
Mayne License Agreement [Member] | VitaCare Divestiture [Member]              
Business Basis Of Presentation New Accounting Standards And Summary Of Significant Accounting Policies [Line Items]              
Consideration assumed by the buyer       1,500      
Purchase Agreement [Member] | VitaCare Divestiture [Member]              
Business Basis Of Presentation New Accounting Standards And Summary Of Significant Accounting Policies [Line Items]              
Restricted cash       $ 11,300      
Milestone Payments One [Member] | Mayne License Agreement [Member]              
Business Basis Of Presentation New Accounting Standards And Summary Of Significant Accounting Policies [Line Items]              
One-time milestone payments   $ 5,000          
Threshold net sales amount to determine one-time milestone payment   100,000          
Milestone Payments Two [Member] | Mayne License Agreement [Member]              
Business Basis Of Presentation New Accounting Standards And Summary Of Significant Accounting Policies [Line Items]              
One-time milestone payments   10,000          
Threshold net sales amount to determine one-time milestone payment   200,000          
Milestone Payments Three Member | Mayne License Agreement [Member]              
Business Basis Of Presentation New Accounting Standards And Summary Of Significant Accounting Policies [Line Items]              
One-time milestone payments   15,000          
Threshold net sales amount to determine one-time milestone payment   $ 300,000          
First $80 Million in Annual Net Sales [Member] | Mayne License Agreement [Member]              
Business Basis Of Presentation New Accounting Standards And Summary Of Significant Accounting Policies [Line Items]              
Royalty rate as percentage on net sales   8.00%          
Threshold annual net sales to determine royalty rate   $ 80,000          
Above $80 Million in Annual Net Sales [Member] | Mayne License Agreement [Member]              
Business Basis Of Presentation New Accounting Standards And Summary Of Significant Accounting Policies [Line Items]              
Royalty rate as percentage on net sales   7.50%          
Threshold annual net sales to determine royalty rate   $ 80,000