Quarterly report pursuant to Section 13 or 15(d)

Revenue (Details) - Change in Contract Asset and Contract Liability Balance

v3.21.2
Revenue (Details) - Change in Contract Asset and Contract Liability Balance - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Sep. 30, 2021
Dec. 31, 2020
Research and Development Arrangement, Contract to Perform for Others [Line Items]                  
Beginning balance, Contract Liabilities     $ (2,455)         $ (2,455)  
Ending Balance, Contract Liabilities $ (233)     $ (2,455)       (233) $ (2,455)
Research and Development Project [Member]                  
Research and Development Arrangement, Contract to Perform for Others [Line Items]                  
Beginning balance, Contract Liabilities     (2,115)       $ (4,240) (2,115) (4,240)
Revenue Recognized 572 $ 1,513 1,397 2,268 $ 1,187 $ 845 $ 412 3,482 4,712
Unearned consideration received 0   (1,600) (1,887) $ (350) $ (350)   (1,600) (2,587)
Ending Balance, Contract Liabilities (233)     (2,115)       (233) (2,115)
Beginning Balance, Contract Asset     0         0  
Revenue recognized 6 1,530           1,536  
Unearned consideration received 0 $ 0 $ 0            
Ending Balance, Contract Asset $ 1,536     $ 0       $ 1,536 $ 0