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Additions and Returns of Product Rights (Tables)
3 Months Ended
Mar. 31, 2023
Business Combinations [Abstract]  
Schedule of Business Acquisitions by Acquisition, Contingent Consideration The following table presents the changes in the fair value of the contingent consideration liability that is remeasured on a recurring basis. The contingent consideration earned and accrued in operating expenses is paid to Theravance quarterly.
Balance at December 31, 2022
$4,154,823 
Cash payment of royalty during the period(245,391)
Change in fair value of contingent consideration included in operating expenses176,122 
Contingent consideration earned and accrued in operating expenses— 
Balance at March 31, 2023
$4,085,554 
The following table presents the changes in the fair value of the contingent consideration liability that is remeasured on a recurring basis.
Balance at December 31, 2022$3,000,000 
Cash payment of royalty during the period(244,920)
Change in fair value of contingent consideration included in operating expenses(443,759)
Contingent consideration earned and accrued in operating expenses188,679 
Balance at March 31, 2023
$2,500,000