XML 80 R69.htm IDEA: XBRL DOCUMENT v3.21.2
Fair Value of Financial Instruments - Reconciliation of Fair Value of Equity Warrants (Details) - Equity warrants - Level 3 - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Beginning balance $ 1,903 $ 1,952 $ 1,914 $ 5,162
Change in fair value (8) (32) (19) (35)
Sales 0 0 0 (3,207)
Ending balance $ 1,895 $ 1,920 $ 1,895 $ 1,920