Quarterly report pursuant to Section 13 or 15(d)

Licenses Acquired - License as recorded in the Condensed Consolidated Statements of Operations (Details)

v3.19.2
Licenses Acquired - License as recorded in the Condensed Consolidated Statements of Operations (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Total licenses acquired expense $ 200 $ 1 $ 650 $ 98
Helocyte [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Total licenses acquired expense       21
Mustang [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Total licenses acquired expense $ 200   $ 650 75
Aevitas [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Total licenses acquired expense   $ 1   1
Cellvation [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Total licenses acquired expense       $ 1