XML 59 R48.htm IDEA: XBRL DOCUMENT v3.21.2
Contingent Consideration Payable  - Narrative (Details) - USD ($)
Sep. 30, 2021
Dec. 31, 2020
Sep. 30, 2020
Dec. 31, 2019
Debt Disclosure [Abstract]        
Contingent consideration payable $ 0 $ 0 $ 0 $ 17,327,000