Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Roll Forward of the Changes in Fair Value of Level 3 Financial Instruments) (Details)

v3.21.2
Fair Value Measurements (Roll Forward of the Changes in Fair Value of Level 3 Financial Instruments) (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2021
USD ($)
Warrants [Member]  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Liabilities, Beginning Balance $ 0
Liabilities, Ending Balance 4,365
Contingent Payment Warrant [Member]  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Additions during the period 3,820
Placement Agent Warrants [Member]  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Additions during the period 545
Caelum [Member]  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Investment, Beginning Balance 17,566
Change in fair value of investments 39,294
Investment, Ending Balance $ 56,860