Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Contingent Consideration (Details)

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Fair Value Measurements - Contingent Consideration (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2020
Dec. 31, 2019
[1]
Fair Value Measurements    
Changes in estimated fair value of contingent consideration $ 0  
Contingent consideration under royalty purchase agreements $ 75 $ 75
[1] The consolidated balance sheet as of December 31, 2019 has been derived from the audited consolidated financial statements as of that date included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019.